the typical investments made by us during 2014 and 2015 were to reputable owners or acquirers , and at leverage levels which are senior to sizable equity investments by the sponsors . during 2015 , our debt and preferred equity activities included purchases and originations , inclusive of advances under 40 future funding obligations , discount and fee amortization , and paid-in-kind interest , net of premium amortization , of $ 781.4 million , and sales , redemption and participations of $ 520.2 million . for descriptions of significant activities in 2015 , refer to `` part i , item 1. business - highlights from 2015 `` . critical accounting policies our discussion and analysis of financial condition and results of operations is based on our consolidated financial statements , which have been prepared in accordance with accounting principles generally accepted in the united states . the preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets , liabilities , and contingencies as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods . we evaluate our assumptions and estimates on an ongoing basis . we base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances , the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources . actual results may differ from these estimates under different assumptions or conditions . we believe the following critical accounting policies affect our more significant judgments and estimates used in the preparation of our consolidated financial statements . investment in commercial real estate properties on a periodic basis , we assess whether there are any indications that the value of our real estate properties may be impaired or that their carrying value may not be recoverable . a property 's value is considered impaired if management 's estimate of the aggregate future cash flows ( undiscounted and without interest charges for consolidated properties ) to be generated by the property is less than the carrying value of the property . to the extent impairment has occurred , the loss will be measured as the excess of the carrying amount of the property over the calculated fair value of the property . we also evaluate our real estate properties for potential impairment when a real estate property has been classified as held for sale . real estate assets held for sale are valued at the lower of either their carrying value or fair value less costs to sell . except as discussed below , we do not believe that there were any indicators of impairment at any of our consolidated properties at december 31 , 2015 . during the three months ended september 30 , 2015 , we recorded a $ 19.2 million charge in connection with the sale of two of our properties , which closed in the fourth quarter of 2015. this charge is included in depreciable real estate reserves in the consolidated statements of operations . prior to the quarter ended september 30 , 2015 , we do not believe that there were any indicators of impairment at these two properties . see note 4 , `` properties held for sale and property dispositions . `` during the fourth quarter of 2015 , we entered into an agreement to sell 885 third avenue and recorded a $ 6.6 million charge which was included in gain on sale of real estate , net in the consolidated statement of operations . as of december 31 , 2015 , 885 third avenue was not reclassified as held for sale as a result of not meeting the criteria in asc 360-10 , property , plant and equipment - impairment and disposal of long-lived assets . in february 2016 , we closed on the sale of this property but do not anticipate meeting the criteria for the full accrual method in asc 360-20 , property , plant and equipment - real estate sales and as a result the property will remain on our consolidated balance sheet until the criteria is met . we incur a variety of costs in the development and leasing of our properties . after determination is made to capitalize a cost , it is allocated to the specific component of a project that is benefited . determination of when a development project is substantially complete and capitalization must cease involves a degree of judgment . the costs of land and building under development include specifically identifiable costs . the capitalized costs include , but are not limited to , pre-construction costs essential to the development of the property , development costs , construction costs , interest costs , real estate taxes , salaries and related costs and other costs incurred during the period of development . we consider a construction project as substantially completed and held available for occupancy upon the completion of tenant improvements , but no later than one year from cessation of major construction activity . we cease capitalization on the portions substantially completed and occupied or held available for occupancy , and capitalize only those costs associated with the portions under construction . we recognize the assets acquired , liabilities assumed ( including contingencies ) and any noncontrolling interests in an acquired entity at their fair values on the acquisition date . we expense acquisition-related transaction costs as incurred , which are included in transaction related costs on our consolidated statements of operations . when we acquire our partner 's equity interest in an existing unconsolidated joint venture and gain control over the investment , we record the consolidated investment at fair value . story_separator_special_tag based on our estimates at december 31 , 2015 , the current market asking rents on these expected 2016 lease expirations at our consolidated suburban operating properties are 8.7 % higher than the existing in-place fully escalated rents while the current market asking rents on all of our consolidated suburban operating properties are 7.4 % higher than the existing in-place fully escalated rents on leases that are scheduled to expire in all future years . 47 investment income investment income increased primarily as a result of higher average investment balances for the year ended december 31 , 2015. for the twelve months ended december 31 , 2015 , the weighted average debt and preferred equity investment balance outstanding and weighted average yield were $ 1.7 billion and 10.3 % , respectively , compared to $ 1.4 billion and 10.5 % , respectively , for the same period in 2014. in addition , we recognized additional income as a result of the early repayment of certain mortgage and mezzanine positions ( $ 2.5 million ) and the sale of a junior mortgage position ( $ 1.2 million ) . this increase was partially offset by additional income recognized in 2014 on a mezzanine investment for which the underlying property was sold in june 2014 ( $ 10.1 million ) and a financing receivable on which we began accruing interest following the completion of the development of the underlying property ( $ 5.3 million ) . as of december 31 , 2015 , the debt and preferred equity investments had a weighted average term to maturity of 1.7 years as compared to a weighted average term to maturity of 2.0 years as of december 31 , 2014. other income other income increased primarily as a result of lease termination income earned at our same-store properties ( $ 20.2 million ) , which included 919 third avenue ( $ 12.5 million ) , a non-recurring fee related to the settlement of a previous investment ( $ 6.5 million ) , a tax benefit related to our taxable reit subsidiary ( $ 5.3 million ) , a non-recurring fee received from a current tenant ( $ 3.5 million ) , and a bankruptcy settlement received from a former tenant ( $ 2.7 million ) . this increase was partially offset by promote income earned in 2014 in connection with the sale of our joint venture interest in 747 madison avenue and 180 broadway in 2014 ( $ 13.6 million ) , incentive income received from a joint venture investment in 2014 ( $ 7.6 million ) , lower contributions from service corporation ( $ 8.0 million ) and a one-time fee earned in connection with the restructuring of one of our debt investments in 2014 ( $ 5.7 million ) . property operating expenses property operating expenses increased primarily as a result of higher operating expenses at the same-store properties ( $ 28.3 million ) and properties recently acquired ( $ 14.4 million ) , partially offset by a decrease from vacating the properties that comprise the one vanderbilt development site ( $ 9.0 million ) . the increase in property operating expenses at the same-store properties was primarily attributable to higher real estate taxes ( $ 15.7 million ) , repairs and maintenance ( $ 12.0 million ) and professional fees ( $ 2.2 million ) . marketing , general and administrative expenses marketing , general and administrative expenses for the year ended december 31 , 2015 were $ 94.9 million , or 5.0 % of total combined revenues , including our share of joint venture revenues , and 44 basis points of total combined assets , including our share of joint venture assets compared to $ 92.5 million , or 5.3 % of total revenues including our share of joint venture revenues , and 49 basis points of total assets including our share of joint venture assets for 2014. interest expense and amortization of deferred financing costs , net of interest income interest expense and amortization of deferred financing costs , net of interest income , increased primarily as a result of the acquisition of our joint venture partner 's interest in may 2014 and a new mortgage at 388-390 greenwich street ( $ 16.4 million ) , increased borrowings on the 2012 credit facility ( $ 10.9 million ) , and a new mortgage related to the acquisition of 11 madison avenue ( $ 12.8 million ) . these increases were partially offset the repayment of the mortgages at 625 madison avenue ( $ 8.4 million ) and 125 park avenue ( $ 4.3 million ) during the fourth quarter of 2014 and 711 third ( $ 4.8 million ) during the first quarter of 2015 , the capitalization of interest relating to properties under development ( $ 4.4 million ) , the redemption of a preferred equity investment which secured a loan ( $ 3.1 million ) during the fourth quarter of 2014 , and the repayment of 5.875 % senior notes issued by rop in august 2014 ( $ 2.8 million ) at their maturity . the weighted average consolidated debt balance outstanding increased to $ 9.2 billion for the year ended december 31 , 2015 from $ 8.7 billion for the year ended december 31 , 2014. the weighted average interest rate decreased to 3.78 % for the year ended december 31 , 2015 from 4.24 % for the year ended december 31 , 2014. depreciation and amortization depreciation and amortization increased primarily as a result of accelerated depreciation expense related to vacating the properties that comprise the one vanderbilt development site ( $ 138.1 million ) , the consolidation of 388-390 greenwich street in 2014 ( $ 31.2 million ) , and the acquisition of 11 madison in august 2015 ( $ 11.1 million ) , partially offset by the write-off of certain tenant improvements and value for in-place leases associated with a former tenant in 2014

loss on early extinguishment of debt loss on early extinguishment of debt for the year ended december 31 , 2014 was primarily attributable to the refinancing of the mortgage at 420 lexington avenue ( $ 24.5 million ) and the early repayment of the mortgage at 625 madison avenue ( $ 6.9 million ) . discontinued operations discontinued operations for the year ended december 31 , 2015 included the gain recognized on the sale of 180 maiden lane ( $ 17.0 million ) and the related results of operations . discontinued operations for the year ended december 31 , 2014 included the gains recognized on the sale of 673 first avenue ( $ 117.6 million ) , 985-987 third avenue ( $ 29.8 million ) , and 2 herald square ( $ 18.8 million ) , and the results of operations of these properties and other properties that were held for sale or sold as of december 31 , 2014 . 49 comparison of the year ended december 31 , 2014 to the year ended december 31 , 2013 the following comparison for the year ended december 31 , 2014 , or 2014 , to the year ended december 31 , 2013 , or 2013 , makes reference to the following : ( i ) the effect of the “ same-store properties , ” which represents all operating properties owned by us at january 1 , 2013 and still owned by us at december 31 , 2014 and


 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.
     ```loss on early extinguishment of debt loss on early extinguishment of debt for the year ended december 31 , 2014 was primarily attributable to the refinancing of the mortgage at 420 lexington avenue ( $ 24.5 million ) and the early repayment of the mortgage at 625 madison avenue ( $ 6.9 million ) . discontinued operations discontinued operations for the year ended december 31 , 2015 included the gain recognized on the sale of 180 maiden lane ( $ 17.0 million ) and the related results of operations . discontinued operations for the year ended december 31 , 2014 included the gains recognized on the sale of 673 first avenue ( $ 117.6 million ) , 985-987 third avenue ( $ 29.8 million ) , and 2 herald square ( $ 18.8 million ) , and the results of operations of these properties and other properties that were held for sale or sold as of december 31 , 2014 . 49 comparison of the year ended december 31 , 2014 to the year ended december 31 , 2013 the following comparison for the year ended december 31 , 2014 , or 2014 , to the year ended december 31 , 2013 , or 2013 , makes reference to the following : ( i ) the effect of the “ same-store properties , ” which represents all operating properties owned by us at january 1 , 2013 and still owned by us at december 31 , 2014 and
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 Suspicious Activity Report : the typical investments made by us during 2014 and 2015 were to reputable owners or acquirers , and at leverage levels which are senior to sizable equity investments by the sponsors . during 2015 , our debt and preferred equity activities included purchases and originations , inclusive of advances under 40 future funding obligations , discount and fee amortization , and paid-in-kind interest , net of premium amortization , of $ 781.4 million , and sales , redemption and participations of $ 520.2 million . for descriptions of significant activities in 2015 , refer to `` part i , item 1. business - highlights from 2015 `` . critical accounting policies our discussion and analysis of financial condition and results of operations is based on our consolidated financial statements , which have been prepared in accordance with accounting principles generally accepted in the united states . the preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets , liabilities , and contingencies as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods . we evaluate our assumptions and estimates on an ongoing basis . we base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances , the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources . actual results may differ from these estimates under different assumptions or conditions . we believe the following critical accounting policies affect our more significant judgments and estimates used in the preparation of our consolidated financial statements . investment in commercial real estate properties on a periodic basis , we assess whether there are any indications that the value of our real estate properties may be impaired or that their carrying value may not be recoverable . a property 's value is considered impaired if management 's estimate of the aggregate future cash flows ( undiscounted and without interest charges for consolidated properties ) to be generated by the property is less than the carrying value of the property . to the extent impairment has occurred , the loss will be measured as the excess of the carrying amount of the property over the calculated fair value of the property . we also evaluate our real estate properties for potential impairment when a real estate property has been classified as held for sale . real estate assets held for sale are valued at the lower of either their carrying value or fair value less costs to sell . except as discussed below , we do not believe that there were any indicators of impairment at any of our consolidated properties at december 31 , 2015 . during the three months ended september 30 , 2015 , we recorded a $ 19.2 million charge in connection with the sale of two of our properties , which closed in the fourth quarter of 2015. this charge is included in depreciable real estate reserves in the consolidated statements of operations . prior to the quarter ended september 30 , 2015 , we do not believe that there were any indicators of impairment at these two properties . see note 4 , `` properties held for sale and property dispositions . `` during the fourth quarter of 2015 , we entered into an agreement to sell 885 third avenue and recorded a $ 6.6 million charge which was included in gain on sale of real estate , net in the consolidated statement of operations . as of december 31 , 2015 , 885 third avenue was not reclassified as held for sale as a result of not meeting the criteria in asc 360-10 , property , plant and equipment - impairment and disposal of long-lived assets . in february 2016 , we closed on the sale of this property but do not anticipate meeting the criteria for the full accrual method in asc 360-20 , property , plant and equipment - real estate sales and as a result the property will remain on our consolidated balance sheet until the criteria is met . we incur a variety of costs in the development and leasing of our properties . after determination is made to capitalize a cost , it is allocated to the specific component of a project that is benefited . determination of when a development project is substantially complete and capitalization must cease involves a degree of judgment . the costs of land and building under development include specifically identifiable costs . the capitalized costs include , but are not limited to , pre-construction costs essential to the development of the property , development costs , construction costs , interest costs , real estate taxes , salaries and related costs and other costs incurred during the period of development . we consider a construction project as substantially completed and held available for occupancy upon the completion of tenant improvements , but no later than one year from cessation of major construction activity . we cease capitalization on the portions substantially completed and occupied or held available for occupancy , and capitalize only those costs associated with the portions under construction . we recognize the assets acquired , liabilities assumed ( including contingencies ) and any noncontrolling interests in an acquired entity at their fair values on the acquisition date . we expense acquisition-related transaction costs as incurred , which are included in transaction related costs on our consolidated statements of operations . when we acquire our partner 's equity interest in an existing unconsolidated joint venture and gain control over the investment , we record the consolidated investment at fair value . story_separator_special_tag based on our estimates at december 31 , 2015 , the current market asking rents on these expected 2016 lease expirations at our consolidated suburban operating properties are 8.7 % higher than the existing in-place fully escalated rents while the current market asking rents on all of our consolidated suburban operating properties are 7.4 % higher than the existing in-place fully escalated rents on leases that are scheduled to expire in all future years . 47 investment income investment income increased primarily as a result of higher average investment balances for the year ended december 31 , 2015. for the twelve months ended december 31 , 2015 , the weighted average debt and preferred equity investment balance outstanding and weighted average yield were $ 1.7 billion and 10.3 % , respectively , compared to $ 1.4 billion and 10.5 % , respectively , for the same period in 2014. in addition , we recognized additional income as a result of the early repayment of certain mortgage and mezzanine positions ( $ 2.5 million ) and the sale of a junior mortgage position ( $ 1.2 million ) . this increase was partially offset by additional income recognized in 2014 on a mezzanine investment for which the underlying property was sold in june 2014 ( $ 10.1 million ) and a financing receivable on which we began accruing interest following the completion of the development of the underlying property ( $ 5.3 million ) . as of december 31 , 2015 , the debt and preferred equity investments had a weighted average term to maturity of 1.7 years as compared to a weighted average term to maturity of 2.0 years as of december 31 , 2014. other income other income increased primarily as a result of lease termination income earned at our same-store properties ( $ 20.2 million ) , which included 919 third avenue ( $ 12.5 million ) , a non-recurring fee related to the settlement of a previous investment ( $ 6.5 million ) , a tax benefit related to our taxable reit subsidiary ( $ 5.3 million ) , a non-recurring fee received from a current tenant ( $ 3.5 million ) , and a bankruptcy settlement received from a former tenant ( $ 2.7 million ) . this increase was partially offset by promote income earned in 2014 in connection with the sale of our joint venture interest in 747 madison avenue and 180 broadway in 2014 ( $ 13.6 million ) , incentive income received from a joint venture investment in 2014 ( $ 7.6 million ) , lower contributions from service corporation ( $ 8.0 million ) and a one-time fee earned in connection with the restructuring of one of our debt investments in 2014 ( $ 5.7 million ) . property operating expenses property operating expenses increased primarily as a result of higher operating expenses at the same-store properties ( $ 28.3 million ) and properties recently acquired ( $ 14.4 million ) , partially offset by a decrease from vacating the properties that comprise the one vanderbilt development site ( $ 9.0 million ) . the increase in property operating expenses at the same-store properties was primarily attributable to higher real estate taxes ( $ 15.7 million ) , repairs and maintenance ( $ 12.0 million ) and professional fees ( $ 2.2 million ) . marketing , general and administrative expenses marketing , general and administrative expenses for the year ended december 31 , 2015 were $ 94.9 million , or 5.0 % of total combined revenues , including our share of joint venture revenues , and 44 basis points of total combined assets , including our share of joint venture assets compared to $ 92.5 million , or 5.3 % of total revenues including our share of joint venture revenues , and 49 basis points of total assets including our share of joint venture assets for 2014. interest expense and amortization of deferred financing costs , net of interest income interest expense and amortization of deferred financing costs , net of interest income , increased primarily as a result of the acquisition of our joint venture partner 's interest in may 2014 and a new mortgage at 388-390 greenwich street ( $ 16.4 million ) , increased borrowings on the 2012 credit facility ( $ 10.9 million ) , and a new mortgage related to the acquisition of 11 madison avenue ( $ 12.8 million ) . these increases were partially offset the repayment of the mortgages at 625 madison avenue ( $ 8.4 million ) and 125 park avenue ( $ 4.3 million ) during the fourth quarter of 2014 and 711 third ( $ 4.8 million ) during the first quarter of 2015 , the capitalization of interest relating to properties under development ( $ 4.4 million ) , the redemption of a preferred equity investment which secured a loan ( $ 3.1 million ) during the fourth quarter of 2014 , and the repayment of 5.875 % senior notes issued by rop in august 2014 ( $ 2.8 million ) at their maturity . the weighted average consolidated debt balance outstanding increased to $ 9.2 billion for the year ended december 31 , 2015 from $ 8.7 billion for the year ended december 31 , 2014. the weighted average interest rate decreased to 3.78 % for the year ended december 31 , 2015 from 4.24 % for the year ended december 31 , 2014. depreciation and amortization depreciation and amortization increased primarily as a result of accelerated depreciation expense related to vacating the properties that comprise the one vanderbilt development site ( $ 138.1 million ) , the consolidation of 388-390 greenwich street in 2014 ( $ 31.2 million ) , and the acquisition of 11 madison in august 2015 ( $ 11.1 million ) , partially offset by the write-off of certain tenant improvements and value for in-place leases associated with a former tenant in 2014

