executive summary highlights of our financial results as of and for the year ended december 31 , 2020 as compared to the same period of the prior year include the following : net sales were $ 1,024.4 million , a decrease of 12.4 % gross profit was $ 240.1 million , an increase of 0.3 % income from operations increased $ 17.9 million to $ 43.0 million net income attributable to astec increased to $ 46.9 million , or 110.3 % diluted earnings per share were $ 2.05 , an increase of 109.2 % significant items impacting operations in 2020 segment updates the company consists of a total of 33 compani es that are included in our consolidated financial statements , of which 25 represent our manufacturing sites and sites that operate as sales offices for our manufacturing locations . during the first quarter of 2020 , we completed an internal reorganization focused on transitioning from a decentralized management structure to a more centralized structure with major directives and decisions being made at the segment and or parent company level . as a result of this reorganization , we realigned our reportable segments moving from three to two reportable segments ( plus corporate ) - infrastructure solutions and materials solutions . our two reportable business segments comprise sites based upon the nature of the products or services produced , the type of customer for the products , the similarity of economic characteristics , the manner in which management reviews results and the nature of the production process , among other considerations . 22 table of contents the corporate category consists of our parent company and astec insurance company ( `` astec insurance `` ) , a captive insurance company , which do not meet the requirements for separate disclosure as an operating segment or inclusion in one of the other reporting segments . we evaluate performance and allocate resources to our operating segments based on profit or loss from operations before united states ( `` u.s. `` ) federal income taxes , state deferred taxes and corporate overhead and , thus , these costs are included in the corporate category . amounts previously reported under the previous segment structure have been restated to conform to the new segment structure . additionally , in both internal and external communications , we are transitioning references to each individual site by a name associated with its location , as compared to previous references to the individual subsidiary company name . covid-19 pandemic the covid-19 pandemic has caused significant disruptions to national and global economies . our u.s. based businesses are designated as essential businesses for critical infrastructure companies by the u.s. department of homeland security and , as such , have remained open throughout the pandemic . two of our foreign operations in the materials solutions segment , located in northern ireland and south africa , as dictated by their local governments , temporarily ceased manufacturing activities in late march 2020. the south africa site reopened on may 4 , 2020 , and the northern ireland facility reopened on may 11 , 2020. our top priority is to protect our employees and their families , our customers and suppliers and our operations from any adverse impacts by taking precautionary measures as directed by health authorities and local governments . in early march 2020 , we formed a covid-19 task force , which continually monitors information from government agencies , our sites , customers , suppliers and other sources . we have enacted several policies to combat the spread of the virus and keep our employees and visitors safe , including work at home initiatives , limits on employee travel , visitors policies , cleaning and disinfecting procedures and mandated temperature checks for visitors and employees . we are utilizing technology to hold meetings virtually as business permits . during 2020 , our sales and profits were negatively impacted by the covid-19 pandemic , and it may continue to negatively disrupt our business and results of operations in the future . the full extent of the covid-19 pandemic on our operations and the markets we serve remains highly uncertain and will depend largely on future developments related to the covid-19 pandemic , including infection rates increasing or returning in various geographic areas , the ultimate duration of the covid-19 pandemic , actions by government authorities to contain the outbreak or treat its impact , such as re-imposing previously lifted measures or putting in place additional restrictions , and the widespread distribution and acceptance of an effective vaccine , among other things . these developments are constantly evolving and can not be accurately predicted . see part i , item 1a . risk factors in this annual report on form 10-k. facility closures amm - in 2018 , management decided to close and cease operations at amm , located in germany . operations ceased in 2019 , and its land and building were sold in january 2020. albuquerque - in late 2019 , we announced the closing of our albuquerque site due to market conditions and underutilization of the manufacturing facility . responsibilities for manufacturing and marketing of albuquerque product lines were transferred to other facilities within the infrastructure solutions segment in late 2019 and early 2020. the albuquerque site was closed as of march 31 , 2020 , and its land and building were sold in the third quarter of 2020. enid - in late 2019 , we impaired and discontinued enid 's oil and gas drilling product lines and sold the remaining assets in the third quarter of 2020. in october 2020 , we sold the assets related to enid 's remaining water well line of business . enid 's land and building are currently being marketed for sale . mequon - in june 2020 , we announced the closing of our mequon facility in order to simplify and consolidate operations . story_separator_special_tag the segment profit increases were partially offset by net increases in restructuring , impairment and other property and equipment charges of $ 3.7 million in 2020 compared to 2019. materials solutions : segment profit for materials solutions was $ 32.1 million for 2020 compared to $ 22.8 million for the same period in 2019 , an increase of $ 9.3 million or 40.8 % . the increase in segment profit between periods was due primarily to an increase in the gross margin of 4.0 % between periods . additionally , the increase in segment profit was partially improved by decreased general and administrative expenses of $ 5.7 million , decreased selling expenses of $ 6.8 million due to right-sizing activities and benefit from net credits in restructuring , impairment and other property and equipment charges of $ 1.6 million primarily due to the gain on sale of land and building at our mequon facility in the fourth quarter of 2020. corporate : corporate operations incurred expenses of $ 40.1 million for 2020 compared to expenses of $ 35.6 million for 2019 , an unfavorable change of $ 4.5 million or 12.6 % , due primarily to an increase in consulting expenses of $ 3.1 million associated with information technology projects and other support projects and net restructuring , impairment and other property and equipment charges of $ 2.8 million offset by a reduction in income taxes of $ 4.4 million . 27 table of contents liquidity and capital resources our primary sources of liquidity and capital resources are cash on hand , borrowing capacity under a $ 150.0 million revolving credit facility ( the `` credit facility `` ) and cash flows from operations . we had $ 158.6 million of cash available for operating purposes as of december 31 , 2020 , of which $ 22.8 million was held by our foreign subsidiaries . we did not have any outstanding borrowings on the credit facility at december 31 , 2020 or 2019. in addition , no borrowings were made under the credit facility during 2020. our outstanding letters of credit totaling $ 7.6 million decreased borrowing availability to $ 142.4 million under the revolving credit facility as of december 31 , 2020. the revolving credit facility agreement contains certain financial covenants , including provisions concerning required levels of annual net income and minimum tangible net worth . we were in compliance with the financial covenants of the agreement at december 31 , 2020. our brazilian subsidiary maintains a separate term loan for working capital purposes with a bank in brazil , which is secured by its manufacturing facility . prior to 2020 , equipment financing loans were also outstanding . certain of our international subsidiaries in africa , australia , brazil , canada and northern ireland each have separate credit facilities with local financial institutions to finance short-term working capital needs , as well as to cover foreign exchange contracts , performance letters of credit , advance payment and retention guarantees . in addition , the brazilian subsidiary also enters into order anticipation agreements with a local bank on a periodic basis . both the outstanding borrowings under the credit facilities of the international subsidiaries and the order anticipation agreements are recorded in `` short-term debt `` on our consolidated balance sheets . each of the credit facilities are generally guaranteed by astec industries , inc. and or secured with certain assets of the local subsidiary except in brazil where the credit facilities are supported by letters of credit issued under the credit facility . cash flows from operating activities replace_table_token_5_th net cash provided by operating activities increased $ 28.9 million in 2020 compared to 2019. net income was the primary driver of the increase in operating cash flows and when combined with changes in large non-cash charges resulted in a total increase of $ 36.4 million . these increases were partially offset primarily by a lower decrease in inventory than prior year 2019 and reductions in customer deposits . story_separator_special_tag roman ' , sans-serif ; font-size:9pt ; font-style : italic ; font-weight:400 ; line-height:120 % ; text-decoration : underline `` > table of contents critical accounting policies and estimates our consolidated financial statements are prepared in accordance with u.s. generally accepted accounting principles . application of these principles requires us to make estimates and judgments that affect the amounts as reported in the consolidated financial statements . accounting policies that are critical to aid in understanding and evaluating the results of operations and financial position include the following : inventory valuation : inventories are valued at the lower of first-in first-out cost or net realizable value . the most significant component of our inventories is steel . open market prices and tariffs are subject to volatility and determine our cost of steel . during periods when open market prices decline , we may need to reduce the carrying value of the inventory . in addition , certain items in inventory become obsolete over time , and we reduce the carrying value of these items to their net realizable value . these reductions are determined by management based on estimates , assumptions and judgments made from the information available at that time . see note 2 , basis of presentation and significant accounting policies , of the notes to consolidated financial statements included in this annual report on form 10-k , for a description of our process used to value inventories at the lower of first-in first-out cost or net realizable value . we do not believe it is reasonably likely that the inventory values will materially change in the near future . revenue recognition : revenue is generally recognized when we satisfy a performance obligation by transferring control of goods or providing services . revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services . we generally obtain purchase authorizations from our customers for a specified amount of

cash flows from investing activities replace_table_token_6_th net cash used by investing activities in 2020 were primarily due to acquisitions and expenditures for property and equipment . these cash uses were partially offset by proceeds from the sale of property and equipment and the sale of our enid subsidiary . net cash used by investing activities in 2019 were primarily due to property and equipment expenditures . 28 table of contents cash flows from financing activities replace_table_token_7_th financing activities in 2020 were primarily a use of cash for the payment of dividends while the use of cash in 2019 was primarily due to net repayments of our credit facility borrowings and the payment of dividends . financial condition our current assets increased to $ 565.8 million at december 31 , 2020 from $ 506.3 million at december 31 , 2019 , an increase of $ 59.5 million . the increase is due primarily to increases in cash and cash equivalents of $ 109.7 million offset by decreases in inventories of $ 44.8 million and trade receivables and contract assets , net of $ 4.4 million . accounts receivable days outstanding increased from 39.3 in 2019 to 45.3 in 2020. our current liabilities decreased to $ 170.3 million at december 31 , 2020 from $ 172.8 million at december 31 , 2019 , a decrease of $2.5 million .


 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.
     ```cash flows from investing activities replace_table_token_6_th net cash used by investing activities in 2020 were primarily due to acquisitions and expenditures for property and equipment . these cash uses were partially offset by proceeds from the sale of property and equipment and the sale of our enid subsidiary . net cash used by investing activities in 2019 were primarily due to property and equipment expenditures . 28 table of contents cash flows from financing activities replace_table_token_7_th financing activities in 2020 were primarily a use of cash for the payment of dividends while the use of cash in 2019 was primarily due to net repayments of our credit facility borrowings and the payment of dividends . financial condition our current assets increased to $ 565.8 million at december 31 , 2020 from $ 506.3 million at december 31 , 2019 , an increase of $ 59.5 million . the increase is due primarily to increases in cash and cash equivalents of $ 109.7 million offset by decreases in inventories of $ 44.8 million and trade receivables and contract assets , net of $ 4.4 million . accounts receivable days outstanding increased from 39.3 in 2019 to 45.3 in 2020. our current liabilities decreased to $ 170.3 million at december 31 , 2020 from $ 172.8 million at december 31 , 2019 , a decrease of $2.5 million .
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 Suspicious Activity Report : executive summary highlights of our financial results as of and for the year ended december 31 , 2020 as compared to the same period of the prior year include the following : net sales were $ 1,024.4 million , a decrease of 12.4 % gross profit was $ 240.1 million , an increase of 0.3 % income from operations increased $ 17.9 million to $ 43.0 million net income attributable to astec increased to $ 46.9 million , or 110.3 % diluted earnings per share were $ 2.05 , an increase of 109.2 % significant items impacting operations in 2020 segment updates the company consists of a total of 33 compani es that are included in our consolidated financial statements , of which 25 represent our manufacturing sites and sites that operate as sales offices for our manufacturing locations . during the first quarter of 2020 , we completed an internal reorganization focused on transitioning from a decentralized management structure to a more centralized structure with major directives and decisions being made at the segment and or parent company level . as a result of this reorganization , we realigned our reportable segments moving from three to two reportable segments ( plus corporate ) - infrastructure solutions and materials solutions . our two reportable business segments comprise sites based upon the nature of the products or services produced , the type of customer for the products , the similarity of economic characteristics , the manner in which management reviews results and the nature of the production process , among other considerations . 22 table of contents the corporate category consists of our parent company and astec insurance company ( `` astec insurance `` ) , a captive insurance company , which do not meet the requirements for separate disclosure as an operating segment or inclusion in one of the other reporting segments . we evaluate performance and allocate resources to our operating segments based on profit or loss from operations before united states ( `` u.s. `` ) federal income taxes , state deferred taxes and corporate overhead and , thus , these costs are included in the corporate category . amounts previously reported under the previous segment structure have been restated to conform to the new segment structure . additionally , in both internal and external communications , we are transitioning references to each individual site by a name associated with its location , as compared to previous references to the individual subsidiary company name . covid-19 pandemic the covid-19 pandemic has caused significant disruptions to national and global economies . our u.s. based businesses are designated as essential businesses for critical infrastructure companies by the u.s. department of homeland security and , as such , have remained open throughout the pandemic . two of our foreign operations in the materials solutions segment , located in northern ireland and south africa , as dictated by their local governments , temporarily ceased manufacturing activities in late march 2020. the south africa site reopened on may 4 , 2020 , and the northern ireland facility reopened on may 11 , 2020. our top priority is to protect our employees and their families , our customers and suppliers and our operations from any adverse impacts by taking precautionary measures as directed by health authorities and local governments . in early march 2020 , we formed a covid-19 task force , which continually monitors information from government agencies , our sites , customers , suppliers and other sources . we have enacted several policies to combat the spread of the virus and keep our employees and visitors safe , including work at home initiatives , limits on employee travel , visitors policies , cleaning and disinfecting procedures and mandated temperature checks for visitors and employees . we are utilizing technology to hold meetings virtually as business permits . during 2020 , our sales and profits were negatively impacted by the covid-19 pandemic , and it may continue to negatively disrupt our business and results of operations in the future . the full extent of the covid-19 pandemic on our operations and the markets we serve remains highly uncertain and will depend largely on future developments related to the covid-19 pandemic , including infection rates increasing or returning in various geographic areas , the ultimate duration of the covid-19 pandemic , actions by government authorities to contain the outbreak or treat its impact , such as re-imposing previously lifted measures or putting in place additional restrictions , and the widespread distribution and acceptance of an effective vaccine , among other things . these developments are constantly evolving and can not be accurately predicted . see part i , item 1a . risk factors in this annual report on form 10-k. facility closures amm - in 2018 , management decided to close and cease operations at amm , located in germany . operations ceased in 2019 , and its land and building were sold in january 2020. albuquerque - in late 2019 , we announced the closing of our albuquerque site due to market conditions and underutilization of the manufacturing facility . responsibilities for manufacturing and marketing of albuquerque product lines were transferred to other facilities within the infrastructure solutions segment in late 2019 and early 2020. the albuquerque site was closed as of march 31 , 2020 , and its land and building were sold in the third quarter of 2020. enid - in late 2019 , we impaired and discontinued enid 's oil and gas drilling product lines and sold the remaining assets in the third quarter of 2020. in october 2020 , we sold the assets related to enid 's remaining water well line of business . enid 's land and building are currently being marketed for sale . mequon - in june 2020 , we announced the closing of our mequon facility in order to simplify and consolidate operations . story_separator_special_tag the segment profit increases were partially offset by net increases in restructuring , impairment and other property and equipment charges of $ 3.7 million in 2020 compared to 2019. materials solutions : segment profit for materials solutions was $ 32.1 million for 2020 compared to $ 22.8 million for the same period in 2019 , an increase of $ 9.3 million or 40.8 % . the increase in segment profit between periods was due primarily to an increase in the gross margin of 4.0 % between periods . additionally , the increase in segment profit was partially improved by decreased general and administrative expenses of $ 5.7 million , decreased selling expenses of $ 6.8 million due to right-sizing activities and benefit from net credits in restructuring , impairment and other property and equipment charges of $ 1.6 million primarily due to the gain on sale of land and building at our mequon facility in the fourth quarter of 2020. corporate : corporate operations incurred expenses of $ 40.1 million for 2020 compared to expenses of $ 35.6 million for 2019 , an unfavorable change of $ 4.5 million or 12.6 % , due primarily to an increase in consulting expenses of $ 3.1 million associated with information technology projects and other support projects and net restructuring , impairment and other property and equipment charges of $ 2.8 million offset by a reduction in income taxes of $ 4.4 million . 27 table of contents liquidity and capital resources our primary sources of liquidity and capital resources are cash on hand , borrowing capacity under a $ 150.0 million revolving credit facility ( the `` credit facility `` ) and cash flows from operations . we had $ 158.6 million of cash available for operating purposes as of december 31 , 2020 , of which $ 22.8 million was held by our foreign subsidiaries . we did not have any outstanding borrowings on the credit facility at december 31 , 2020 or 2019. in addition , no borrowings were made under the credit facility during 2020. our outstanding letters of credit totaling $ 7.6 million decreased borrowing availability to $ 142.4 million under the revolving credit facility as of december 31 , 2020. the revolving credit facility agreement contains certain financial covenants , including provisions concerning required levels of annual net income and minimum tangible net worth . we were in compliance with the financial covenants of the agreement at december 31 , 2020. our brazilian subsidiary maintains a separate term loan for working capital purposes with a bank in brazil , which is secured by its manufacturing facility . prior to 2020 , equipment financing loans were also outstanding . certain of our international subsidiaries in africa , australia , brazil , canada and northern ireland each have separate credit facilities with local financial institutions to finance short-term working capital needs , as well as to cover foreign exchange contracts , performance letters of credit , advance payment and retention guarantees . in addition , the brazilian subsidiary also enters into order anticipation agreements with a local bank on a periodic basis . both the outstanding borrowings under the credit facilities of the international subsidiaries and the order anticipation agreements are recorded in `` short-term debt `` on our consolidated balance sheets . each of the credit facilities are generally guaranteed by astec industries , inc. and or secured with certain assets of the local subsidiary except in brazil where the credit facilities are supported by letters of credit issued under the credit facility . cash flows from operating activities replace_table_token_5_th net cash provided by operating activities increased $ 28.9 million in 2020 compared to 2019. net income was the primary driver of the increase in operating cash flows and when combined with changes in large non-cash charges resulted in a total increase of $ 36.4 million . these increases were partially offset primarily by a lower decrease in inventory than prior year 2019 and reductions in customer deposits . story_separator_special_tag roman ' , sans-serif ; font-size:9pt ; font-style : italic ; font-weight:400 ; line-height:120 % ; text-decoration : underline `` > table of contents critical accounting policies and estimates our consolidated financial statements are prepared in accordance with u.s. generally accepted accounting principles . application of these principles requires us to make estimates and judgments that affect the amounts as reported in the consolidated financial statements . accounting policies that are critical to aid in understanding and evaluating the results of operations and financial position include the following : inventory valuation : inventories are valued at the lower of first-in first-out cost or net realizable value . the most significant component of our inventories is steel . open market prices and tariffs are subject to volatility and determine our cost of steel . during periods when open market prices decline , we may need to reduce the carrying value of the inventory . in addition , certain items in inventory become obsolete over time , and we reduce the carrying value of these items to their net realizable value . these reductions are determined by management based on estimates , assumptions and judgments made from the information available at that time . see note 2 , basis of presentation and significant accounting policies , of the notes to consolidated financial statements included in this annual report on form 10-k , for a description of our process used to value inventories at the lower of first-in first-out cost or net realizable value . we do not believe it is reasonably likely that the inventory values will materially change in the near future . revenue recognition : revenue is generally recognized when we satisfy a performance obligation by transferring control of goods or providing services . revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services . we generally obtain purchase authorizations from our customers for a specified amount of

