respect to the quantities and costs of refined petroleum products supplied to our pipelines and or held in our terminals ; operating hazards , natural disasters , casualty losses and other matters beyond our control ; increases in our debt levels or costs ; changes in our ability to continue to access the credit markets ; compliance , or failure to comply , with restrictive and financial covenants in our various debt agreements ; the inability of our subsidiaries to freely make dividends , loans or other cash distributions to us ; seasonality ; 56 management 's discussion and analysis acts of terrorism ( including cyber-terrorism ) aimed at either our facilities or other facilities that could impair our ability to produce or transport refined products or receive feedstocks ; disruption , failure , or cybersecurity breaches affecting or targeting our it systems and controls , our infrastructure , or the infrastructure of our cloud-based it service providers ; changes in the cost or availability of transportation for feedstocks and refined products ; and other factors discussed under item 1a , risk factors and item 7 , management 's discussion and analysis of financial condition and results of operations and in our other filings with the sec . in light of these risks , uncertainties and assumptions , our actual results of operations and execution of our business strategy could differ materially from those expressed in , or implied by , the forward-looking statements , and you should not place undue reliance upon them . in addition , past financial and or operating performance is not necessarily a reliable indicator of future performance , and you should not use our historical performance to anticipate future results or period trends . we can give no assurances that any of the events anticipated by any forward-looking statements will occur or , if any of them do , what impact they will have on our results of operations and financial condition . all forward-looking statements included in this report are based on information available to us on the date of this report . we undertake no obligation to revise or update any forward-looking statements as a result of new information , future events or otherwise . executive summary and strategic overview business overview we are an integrated downstream energy business focused on petroleum refining , the transportation , storage and wholesale distribution of crude oil , intermediate and refined products and convenience store retailing . effective july 1 , 2017 , we acquired through the delek/alon the operations and net assets of alon , as discussed in the 'recent strategic developments ' section of item 1 , business , and as discussed in note 3 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form 10-k. the delek/alon merger continues to have a significant impact on our revenue and profitability as well as earnings per share , our net asset position , our purchasing position in the marketplace , our footprint in the refining industry , especially in the gulf coast region/permian basin , and our ability to go to market and secure financing , and we continue to realize synergies from our combined operations . refining overview the refining segment processes crude oil and other purchased feedstocks for the manufacture of transportation motor fuels , including various grades of gasoline , diesel fuel , aviation fuel , asphalt and other petroleum-based products that are distributed through owned and third-party product terminals . it had a combined nameplate capacity of 302,000 barrels per day as of december 31 , 2018 . prior to the delek/alon merger , the refining segment operated refineries in tyler , texas ( the `` tyler refinery `` ) and el dorado , arkansas ( the `` el dorado refinery `` ) with a combined design crude throughput ( nameplate ) capacity of 155,000 barrels per day ( `` bpd `` ) , including the 75,000 bpd tyler refinery and the 80,000 bpd el dorado refinery . effective with the delek/alon merger , our refining segment now also includes a crude oil refinery located in big spring , texas ( the `` big spring refinery `` ) with a nameplate capacity of 73,000 bpd , a crude oil refinery located in krotz springs , louisiana ( the `` krotz springs refinery `` ) with a nameplate capacity of 74,000 bpd . our refining segment also included two biodiesel facilities we own and operate that are engaged in the production of biodiesel fuels and related activities , located in crossett , arkansas and cleburne , texas . our profitability in the refining segment is substantially determined by the difference between the cost of the crude oil feedstocks we purchase and the price of the refined products we sell , referred to as the `` crack spread `` , `` refining margin `` or `` refined product margin `` . the cost to acquire feedstocks and the price of the refined petroleum products we ultimately sell from our refineries depend on numerous factors beyond our control , including the supply of , and demand for , crude oil , gasoline and other refined petroleum products which , in turn , depend on , among other factors , changes in domestic and foreign economies , weather conditions such as hurricanes or tornadoes , local , domestic and foreign political affairs , global conflict , production levels , the availability of imports , the marketing of competitive fuels and government regulation . other significant factors that influence our results in the refining segment include operating costs ( particularly the cost of natural gas used for fuel and the cost of electricity ) , seasonal factors , refinery utilization rates and planned or unplanned maintenance activities or turnarounds . story_separator_special_tag these significant developments were intentionally implemented to align with some of our most critical strategic initiatives for both 2018 and 2019 which include managing our risk and enhancing shareholder value by focusing on the following : growing our business through new lines of business and investment in our existing businesses including capital improvements and new technology , and identifying and managing operational and financial risks to improve operational decision-making and increase profitability . in addition to the significant initiatives/developments described above , we entered into several other strategic transactions in order to improve our financial position or enhance shareholder value since december 31 , 2017 , some of the most significant of which are described below . transactions designed to maximize shareholder return 2018 and 2019 share repurchases on january 23 , 2018 , delek repurchased 2.0 million shares of its common stock from alon israel in connection with delek 's rights pursuant to a stock purchase agreement dated april 14 , 2015 by and between delek and alon israel . alon israel delivered a right of first offer notice to delek on january 16 , 2018 , informing delek of alon israel 's intention to sell the 2.0 million shares , and delek accepted such offer on january 17 , 2018. the total purchase price was approximately $ 75.3 million , or $ 37.64 per share . in the aggregate , pursuant to various share repurchase programs approved by our board of directors , we have repurchased 9,022,386 shares for a total of approximately $ 365.3 million since december 31 , 2017. as of february 22 , 2019 , there is approximately $ 409.7 million of authorization remaining under delek 's aggregate stock repurchase program ( based on repurchases that had settled as of february 22 , 2019 ) . see further discussion in note 5 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form 10-k. february 2018 acquisition of non-controlling interest in alon partnership on november 8 , 2017 , delek and the alon partnership ( as defined in note 6 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form 10-k ) entered into a definitive merger agreement under which delek agreed to acquire all of the outstanding limited partner units which delek did not already own in an all-equity transaction . this transaction was approved by all voting members of the board of directors of the general partner of the alon partnership upon the recommendation from its conflicts committee and by the board of directors of delek . this transaction closed on february 7 , 2018 ( the `` merger date `` ) . delek owned approximately 51.0 million limited partner units of the alon partnership , or approximately 81.6 % of the outstanding units immediately prior to the merger date . under terms of the merger agreement , the owners of the remaining outstanding units in the alon partnership that delek did not currently own immediately prior to the merger date received a fixed exchange ratio of 0.49 shares of new delek common stock for each limited partner unit of the alon partnership , resulting in the issuance of approximately 5.6 million shares of new delek common stock to the public unitholders of the alon partnership . the limited partner interests of the alon partnership prior to this acquisition were represented as common units outstanding . because the transaction represented a combination of ownership interests under common control , the transfer of equity from non-controlling interest 60 management 's discussion and analysis to owned interest was recorded at carrying value and no gain or loss was recognized in connection with the transaction . see further discussion in note 6 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form 10-k. the acquisition of the non-controlling interest in the alon partnership enabled us to refocus the efforts being expended for that separate master limited partnership on a more synergistic and cohesive strategy where both the tactical operational and growth objectives of the big spring refinery ( owned by the alon partnership ) are fully integrated and aligned within our refining segment . additionally , the elimination of the non-controlling public ownership allows us to channel 100 % of the alon partnership 's operational , market and financial contributions to the benefit of delek and its shareholders . september 2018 settlement of convertible debt and related call options on september 17 , 2018 , delek settled its convertible notes ( as defined in note 11 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form 10-k ) for a combination of cash and shares of new delek common stock . the maturity settlement in respect of the convertible notes consisted of ( i ) cash payments totaling approximately $ 152.5 million which included a cash payment for outstanding principal of $ 150.0 million , a cash payment for accrued interest of approximately $ 2.2 million , a cash payment for dividends of approximately $ 0.3 million and a nominal cash payment in lieu of fractional shares , and ( ii ) the issuance of approximately 2.7 million shares of new delek common stock to holders of the convertible notes ( the “ conversion shares ” ) . the issuance of the conversion shares was made in exchange for the convertible notes pursuant to an exemption from the registration requirements provided by section 3 ( a ) ( 9 ) of the securities act of 1933 , as amended . on september 17 , 2018 , we exercised the call options ( as defined in note 11 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form

net cash provided by investing activities was $ 37.6 million for the year ended december 31 , 2017 , compared to $ 200.7 million in 2016 . this decrease in cash flows from investing activities was primarily due to an increase in cash purchases of property , plant and equipment , which increased from $ 46.3 million in 2016 to $ 172.0 million in 2017 . additionally , the disposed retail segment provided $ 288.9 million of cash flows from investing activities in 2016 that was not recurring in 2017 , while the california discontinued entities provided $ 12.2 million of cash flows from investing activities in 2017 . this decrease was partially offset by the the cash acquired in the delek/alon merger of $ 200.5 million ( excluding the cash acquired attributable to the california discontinued entities ) and a decrease in equity method contributions of $ 55.8 million . cash flows from financing activities ytd 2018 vs. ytd 2017 net cash provided by financing activities was $ 297.6 million for the year ended december 31 , 2018 , compared to cash used of $ 104.6 million in the comparable 2017 period . we completed the refinancing transaction as well as extinguished the convertible notes during the year ended december 31 , 2018 . the increase in net cash flows from financing activities was primarily attributable to proceeds from long-term revolvers of $ 2,124.6 million and proceeds from term debt of $ 690.6 million , offset by payments on long-term revolvers of $ 1,679.8 million , payment on term debt of $ 826.3 million , deferred financing costs paid of $ 13.8 million , repayment of product financing agreements of $ 72.4 million , repurchase of common stock of $ 365.3 million and increases in dividends paid to $ 80.1 million compared to $ 44.0 million in the comparable 2017 period .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```net cash provided by investing activities was $ 37.6 million for the year ended december 31 , 2017 , compared to $ 200.7 million in 2016 . this decrease in cash flows from investing activities was primarily due to an increase in cash purchases of property , plant and equipment , which increased from $ 46.3 million in 2016 to $ 172.0 million in 2017 . additionally , the disposed retail segment provided $ 288.9 million of cash flows from investing activities in 2016 that was not recurring in 2017 , while the california discontinued entities provided $ 12.2 million of cash flows from investing activities in 2017 . this decrease was partially offset by the the cash acquired in the delek/alon merger of $ 200.5 million ( excluding the cash acquired attributable to the california discontinued entities ) and a decrease in equity method contributions of $ 55.8 million . cash flows from financing activities ytd 2018 vs. ytd 2017 net cash provided by financing activities was $ 297.6 million for the year ended december 31 , 2018 , compared to cash used of $ 104.6 million in the comparable 2017 period . we completed the refinancing transaction as well as extinguished the convertible notes during the year ended december 31 , 2018 . the increase in net cash flows from financing activities was primarily attributable to proceeds from long-term revolvers of $ 2,124.6 million and proceeds from term debt of $ 690.6 million , offset by payments on long-term revolvers of $ 1,679.8 million , payment on term debt of $ 826.3 million , deferred financing costs paid of $ 13.8 million , repayment of product financing agreements of $ 72.4 million , repurchase of common stock of $ 365.3 million and increases in dividends paid to $ 80.1 million compared to $ 44.0 million in the comparable 2017 period .
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 Suspicious Activity Report : respect to the quantities and costs of refined petroleum products supplied to our pipelines and or held in our terminals ; operating hazards , natural disasters , casualty losses and other matters beyond our control ; increases in our debt levels or costs ; changes in our ability to continue to access the credit markets ; compliance , or failure to comply , with restrictive and financial covenants in our various debt agreements ; the inability of our subsidiaries to freely make dividends , loans or other cash distributions to us ; seasonality ; 56 management 's discussion and analysis acts of terrorism ( including cyber-terrorism ) aimed at either our facilities or other facilities that could impair our ability to produce or transport refined products or receive feedstocks ; disruption , failure , or cybersecurity breaches affecting or targeting our it systems and controls , our infrastructure , or the infrastructure of our cloud-based it service providers ; changes in the cost or availability of transportation for feedstocks and refined products ; and other factors discussed under item 1a , risk factors and item 7 , management 's discussion and analysis of financial condition and results of operations and in our other filings with the sec . in light of these risks , uncertainties and assumptions , our actual results of operations and execution of our business strategy could differ materially from those expressed in , or implied by , the forward-looking statements , and you should not place undue reliance upon them . in addition , past financial and or operating performance is not necessarily a reliable indicator of future performance , and you should not use our historical performance to anticipate future results or period trends . we can give no assurances that any of the events anticipated by any forward-looking statements will occur or , if any of them do , what impact they will have on our results of operations and financial condition . all forward-looking statements included in this report are based on information available to us on the date of this report . we undertake no obligation to revise or update any forward-looking statements as a result of new information , future events or otherwise . executive summary and strategic overview business overview we are an integrated downstream energy business focused on petroleum refining , the transportation , storage and wholesale distribution of crude oil , intermediate and refined products and convenience store retailing . effective july 1 , 2017 , we acquired through the delek/alon the operations and net assets of alon , as discussed in the 'recent strategic developments ' section of item 1 , business , and as discussed in note 3 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form 10-k. the delek/alon merger continues to have a significant impact on our revenue and profitability as well as earnings per share , our net asset position , our purchasing position in the marketplace , our footprint in the refining industry , especially in the gulf coast region/permian basin , and our ability to go to market and secure financing , and we continue to realize synergies from our combined operations . refining overview the refining segment processes crude oil and other purchased feedstocks for the manufacture of transportation motor fuels , including various grades of gasoline , diesel fuel , aviation fuel , asphalt and other petroleum-based products that are distributed through owned and third-party product terminals . it had a combined nameplate capacity of 302,000 barrels per day as of december 31 , 2018 . prior to the delek/alon merger , the refining segment operated refineries in tyler , texas ( the `` tyler refinery `` ) and el dorado , arkansas ( the `` el dorado refinery `` ) with a combined design crude throughput ( nameplate ) capacity of 155,000 barrels per day ( `` bpd `` ) , including the 75,000 bpd tyler refinery and the 80,000 bpd el dorado refinery . effective with the delek/alon merger , our refining segment now also includes a crude oil refinery located in big spring , texas ( the `` big spring refinery `` ) with a nameplate capacity of 73,000 bpd , a crude oil refinery located in krotz springs , louisiana ( the `` krotz springs refinery `` ) with a nameplate capacity of 74,000 bpd . our refining segment also included two biodiesel facilities we own and operate that are engaged in the production of biodiesel fuels and related activities , located in crossett , arkansas and cleburne , texas . our profitability in the refining segment is substantially determined by the difference between the cost of the crude oil feedstocks we purchase and the price of the refined products we sell , referred to as the `` crack spread `` , `` refining margin `` or `` refined product margin `` . the cost to acquire feedstocks and the price of the refined petroleum products we ultimately sell from our refineries depend on numerous factors beyond our control , including the supply of , and demand for , crude oil , gasoline and other refined petroleum products which , in turn , depend on , among other factors , changes in domestic and foreign economies , weather conditions such as hurricanes or tornadoes , local , domestic and foreign political affairs , global conflict , production levels , the availability of imports , the marketing of competitive fuels and government regulation . other significant factors that influence our results in the refining segment include operating costs ( particularly the cost of natural gas used for fuel and the cost of electricity ) , seasonal factors , refinery utilization rates and planned or unplanned maintenance activities or turnarounds . story_separator_special_tag these significant developments were intentionally implemented to align with some of our most critical strategic initiatives for both 2018 and 2019 which include managing our risk and enhancing shareholder value by focusing on the following : growing our business through new lines of business and investment in our existing businesses including capital improvements and new technology , and identifying and managing operational and financial risks to improve operational decision-making and increase profitability . in addition to the significant initiatives/developments described above , we entered into several other strategic transactions in order to improve our financial position or enhance shareholder value since december 31 , 2017 , some of the most significant of which are described below . transactions designed to maximize shareholder return 2018 and 2019 share repurchases on january 23 , 2018 , delek repurchased 2.0 million shares of its common stock from alon israel in connection with delek 's rights pursuant to a stock purchase agreement dated april 14 , 2015 by and between delek and alon israel . alon israel delivered a right of first offer notice to delek on january 16 , 2018 , informing delek of alon israel 's intention to sell the 2.0 million shares , and delek accepted such offer on january 17 , 2018. the total purchase price was approximately $ 75.3 million , or $ 37.64 per share . in the aggregate , pursuant to various share repurchase programs approved by our board of directors , we have repurchased 9,022,386 shares for a total of approximately $ 365.3 million since december 31 , 2017. as of february 22 , 2019 , there is approximately $ 409.7 million of authorization remaining under delek 's aggregate stock repurchase program ( based on repurchases that had settled as of february 22 , 2019 ) . see further discussion in note 5 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form 10-k. february 2018 acquisition of non-controlling interest in alon partnership on november 8 , 2017 , delek and the alon partnership ( as defined in note 6 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form 10-k ) entered into a definitive merger agreement under which delek agreed to acquire all of the outstanding limited partner units which delek did not already own in an all-equity transaction . this transaction was approved by all voting members of the board of directors of the general partner of the alon partnership upon the recommendation from its conflicts committee and by the board of directors of delek . this transaction closed on february 7 , 2018 ( the `` merger date `` ) . delek owned approximately 51.0 million limited partner units of the alon partnership , or approximately 81.6 % of the outstanding units immediately prior to the merger date . under terms of the merger agreement , the owners of the remaining outstanding units in the alon partnership that delek did not currently own immediately prior to the merger date received a fixed exchange ratio of 0.49 shares of new delek common stock for each limited partner unit of the alon partnership , resulting in the issuance of approximately 5.6 million shares of new delek common stock to the public unitholders of the alon partnership . the limited partner interests of the alon partnership prior to this acquisition were represented as common units outstanding . because the transaction represented a combination of ownership interests under common control , the transfer of equity from non-controlling interest 60 management 's discussion and analysis to owned interest was recorded at carrying value and no gain or loss was recognized in connection with the transaction . see further discussion in note 6 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form 10-k. the acquisition of the non-controlling interest in the alon partnership enabled us to refocus the efforts being expended for that separate master limited partnership on a more synergistic and cohesive strategy where both the tactical operational and growth objectives of the big spring refinery ( owned by the alon partnership ) are fully integrated and aligned within our refining segment . additionally , the elimination of the non-controlling public ownership allows us to channel 100 % of the alon partnership 's operational , market and financial contributions to the benefit of delek and its shareholders . september 2018 settlement of convertible debt and related call options on september 17 , 2018 , delek settled its convertible notes ( as defined in note 11 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form 10-k ) for a combination of cash and shares of new delek common stock . the maturity settlement in respect of the convertible notes consisted of ( i ) cash payments totaling approximately $ 152.5 million which included a cash payment for outstanding principal of $ 150.0 million , a cash payment for accrued interest of approximately $ 2.2 million , a cash payment for dividends of approximately $ 0.3 million and a nominal cash payment in lieu of fractional shares , and ( ii ) the issuance of approximately 2.7 million shares of new delek common stock to holders of the convertible notes ( the “ conversion shares ” ) . the issuance of the conversion shares was made in exchange for the convertible notes pursuant to an exemption from the registration requirements provided by section 3 ( a ) ( 9 ) of the securities act of 1933 , as amended . on september 17 , 2018 , we exercised the call options ( as defined in note 11 of our consolidated financial statements included in item 8 , financial statements and supplementary data , of this annual report on form

