investment volume in the past two years was at the highest levels since we made our initial investment in europe nearly twenty years ago , and we anticipate another strong investment year in 2014. our continued investment in europe is a result of our commitment to assist our customers with the fleet replacement required in the european tank car market . we expect a slight increase in asc 's segment profit in 2014 as shipping volume should improve in 2014 as we expect to recapture some of the tonnage lost during the challenging weather conditions experienced in the fourth quarter of 2013. we believe portfolio management 's segment profit will decrease modestly in 2014. while we expect continued strong performance at the rolls-royce affiliates , aggregate earnings from affiliates and remarketing income will be lower . 28 segment operations segment profit is an internal performance measure used by the chief executive officer to assess the performance of each segment in a given period . segment profit includes all revenues , pretax earnings from affiliates , and net gains on asset dispositions that are attributable to the segments , as well as expenses that management believes are directly associated with the financing , maintenance , and operation of the revenue earning assets . segment profit excludes selling , general and administrative expenses , income taxes , and certain other amounts not allocated to the segments . these amounts are included in other . we allocate debt balances and related interest expense to each segment based upon a predetermined fixed recourse leverage level expressed as a ratio of recourse debt ( including off-balance-sheet debt ) to equity . the leverage levels are 5:1 for rail north america , 2:1 for rail international , 1.5:1 for asc , and 3:1 for portfolio management . we believe that by using this leverage and interest expense allocation methodology , each operating segment 's financial performance reflects appropriate risk-adjusted borrowing costs . rail north america segment summary in 2013 , rail north america continued to experience strong demand for tank cars , which led to historically high lease rate pricing and longer lease terms . the weighted average lease renewal rate on cars in our lease price index ( the “ lpi , ” see definition below ) increased 34.5 % from the weighted average expiring lease rate , compared to an increase of 25.6 % in 2012 and 6.9 % in 2011 . lease terms on renewals for cars in the lpi averaged 62 months in 2013 , compared to 60 months in 2012 and 45 months in 2011 . during 2013 , an average of 107,721 railcars were on lease compared to 107,255 in 2012 . utilization was 98.5 % at the end of 2013 , compared to 97.9 % at the end of 2012 . in 2014 , we expect higher lease revenue , a modest decline in remarketing income , and increased maintenance expense as we work through the tank car compliance cycle . leases for approximately 20,000 railcars will expire in 2014 , and we expect strong renewal success at attractive rates , particularly for tank cars . however , cars that serve the coal markets , including 2,750 cars that have leases expiring in 2014 , are experiencing relatively weak demand , and we expect that utilization and lease pricing for these cars will remain below historical norms . in 2011 , we entered into a purchase agreement for 12,500 railcars , which was the largest such commitment in our history . under this agreement , we have taken delivery of 5,900 railcars as of december 31 , 2013 , and expect to take delivery of 2,500 railcars in 2014. we also expect to acquire an additional 900 new railcars outside of this agreement in 2014. we may add other selected assets to our fleet , although rising asset prices may impact our investment spending . 29 the following table shows rail north america 's segment results for the years ended december 31 ( in millions ) : replace_table_token_9_th the following table shows the components of rail north america 's lease revenue for the years ended december 31 ( in millions ) : replace_table_token_10_th lease price index our lpi is an internally-generated business indicator that measures lease rate pricing on renewals within our north american railcar fleet . we calculate the index using the weighted average lease rate for a group of railcar types that we believe best represents our overall north american fleet . the average renewal lease rate change is reported as the percentage change between the average renewal lease rate and the average expiring lease rate , weighted by fleet composition . the average renewal lease term is reported in months and reflects the average renewal lease term of railcar types in the lpi , weighted by fleet composition . 30 rail north america fleet data the following table shows fleet activity for rail north america railcars for the years ended december 31 : replace_table_token_11_th 31 the following table shows fleet activity for rail north america locomotives for the years ended december 31 : replace_table_token_12_th segment profit in 2013 , segment profit increased to $ 231.6 million , compared to $ 209.3 million in 2012 , primarily due to higher lease revenue and net gain on asset dispositions , partially offset by increased maintenance expense . in 2012 , segment profit increased to $ 209.3 million compared to $ 172.7 million in 2011. the 2011 results included $ 5.5 million of revenue from a leveraged lease adjustment that related to changes in the timing of the taxable income from a leveraged lease structure . excluding the effect of this item , segment profit increased $ 42.1 million , primarily due to higher lease revenue and gains on asset dispositions combined with lower maintenance expense . story_separator_special_tag the environment for investment in inland marine and container assets continues to be challenging as relatively inexpensive sources of capital are aggressively pursuing these asset classes . in 2013 , we dissolved our singco and somargas marine affiliates , with each partner taking direct ownership of five liquefied gas carrying vessels ( the `` norgas vessels `` ) with an aggregate value of $ 151.8 million and recognized a pretax gain of $ 2.5 million , which is reflected in share of affiliates ' earnings . in connection with the dissolution we paid $ 101.3 million , primarily to satisfy our share of the affiliates ' external debt . the vessels continue to operate in a vessel pooling arrangement that our former partner manages . in 2012 , our gas compression equipment leasing affiliate , enerven compression , llc , sold substantially all of its assets . in connection with this disposition we recognized an impairment loss of $ 14.8 million , which is reflected in share of affiliates ' earnings . in 2013 , we reversed $ 1.1 million of the loss due to higher than expected proceeds from the asset sales . the joint venture is in the process of liquidating . in 2011 , our clipper fourth affiliates were dissolved . in connection with the dissolutions , we paid $ 62.1 million , primarily to satisfy our share of the affiliates ' outstanding debt and took ownership of six chemical parcel tankers ( the `` nordic vessels `` ) with an aggregate value of $ 88.8 million . additionally , we recognized an impairment loss of $ 5.2 million , which is reflected in share of affiliates ' earnings . portfolio management 's total asset base was $ 856.9 million at december 31 , 2013 compared to $ 797.4 million at december 31 , 2012 , and $ 846.6 million at december 31 , 2011 . the estimated net book value equivalent of assets managed by portfolio management for third parties was $ 125.3 million at december 31 , 2013 . 39 the following table shows portfolio management 's segment results for the years ended december 31 ( in millions ) : replace_table_token_16_th 40 segment profit in 2013 , segment profit of $ 74.4 million was $ 24.2 million higher than the prior year . this increase was driven by higher marine net operating results which includes the norgas vessels that are now wholly owned , higher rrpf affiliates ' earnings and the absence of the enerven impairment , partially offset by lower lease revenues . in 2012 , segment profit of $ 50.2 million was $ 2.6 million higher than 2011. the increase was primarily due to higher net gains on asset dispositions , higher earnings from the rrpf affiliates and lower operating costs . these increases were partially offset by an impairment loss at our enerven affiliate . revenues lease revenue was $ 5.7 million lower in 2013 , primarily due to the sale of barges and other equipment in the current year . marine operating revenue was $ 25.2 million higher than prior year , primarily due to revenue from the norgas vessels , which were acquired in april 2013. other revenue was $ 0.9 million higher than prior year , primarily due to distributions received from investment funds in 2013. in 2012 , lease revenue was $ 6.9 million lower than 2011 , primarily due to the sale of barges and other equipment . marine operating revenue was $ 8.6 million higher than prior year , primarily due to a full year of revenue from the nordic vessels acquired in 2011. other income was $ 0.8 million higher than 2011 , primarily due to interest income from new loans . expenses in 2013 , marine operating expense was $ 16.4 million higher than prior year , primarily due to the norgas vessels acquired in april 2013. depreciation expense was $ 1.3 million higher , also due to the norgas vessels , partially offset by sales of equipment previously on lease . other operating expense was $ 1.5 million higher , primarily due to the reversal of a provision for losses upon the sale of a non-performing leveraged lease investment in the prior year . in 2012 , marine operating expense increased $ 8.2 million and depreciation expense increased $ 2.6 million , both primarily due to a full year of operations for the nordic vessels . operating lease expense decreased $ 1.2 million , primarily due to the sale of barges at the end of 2011 and the early termination of a lease in 2012. other operating expense decreased $ 3.4 million , primarily due to a $ 2.6 million decrease in other operating costs for owned and pooled barges and higher reversals of provisions for losses , which were $ 1.2 million in 2012 and $ 0.4 million in 2011. in 2012 , a reversal was recorded upon the sale of a non-performing leveraged lease investment . other income ( expense ) net gain on asset dispositions in 2013 was $ 3.7 million lower than prior year , primarily due to lower residual sharing receipts . interest expense was $ 1.0 million lower , primarily due to lower rates . other income in the prior year was positively impacted by the favorable remeasurement of derivatives . share of affiliates ' earnings in 2013 was $ 27.5 million higher , primarily due to the absence of operating losses and an impairment loss at our enerven affiliate in the prior year . in the current year , our share of rrpf affiliates ' earnings of $ 52.6 million included gains of $ 17.6 million resulting from the sales of engines . the rrpf affiliates had 403 aircraft engines at the end of 2013 compared to 402 at the end of 2012. net gains on asset dispositions in 2012 increased $ 6.6 million compared to 2011 , primarily due to a $ 5.3 million residual

debt `` in part ii , item 8 of this form 10-k. equity total equity increased $ 152.8 million from the prior year , primarily due to $ 169.3 million of net income , $ 52.9 million from the effects of post-retirement benefit plan adjustments , $ 25.8 million of foreign currency translation adjustments due to the balance sheet effects of a weaker us dollar , $ 22.4 million from changes in unrealized losses on derivative instruments , and $ 10.5 million from the effects of share-based compensation . these increases were partially offset by $ 68.6 million of common stock repurchases and $ 60.3 million of dividends . see `` note 20 . shareholders ' equity `` in part ii , item 8 of this form 10-k. cash flow discussion we generate a significant amount of cash from operating activities and from our investment portfolio . we also access domestic and international capital markets by issuing unsecured or secured debt and commercial paper . we use these sources of cash , along with our available cash balances , to fulfill our debt , lease , and dividend obligations and to fund portfolio investments and capital additions . we primarily use cash from operations and commercial paper issuances to fund daily operations . the timing of asset dispositions and changes in working capital impact cash flows from operations and portfolio proceeds . as a result , these cash flow components may vary materially from quarter to quarter and year to year . as of december 31 , 2013 , we had unrestricted cash balances of $ 379.7 million . net cash provided by operating activities net cash provided by operating activities of $ 400.7 million increased $ 30.5 million compared to 2012 . the increase was primarily driven by higher lease revenue , dividends from affiliates , and other changes in working capital , and was partially offset by higher maintenance and compensation payments . 46 portfolio investments and capital additions portfolio investments and capital additions primarily consist of purchases of operating assets , investments in affiliates , loans , and capitalized asset improvements .


 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.
     ```debt `` in part ii , item 8 of this form 10-k. equity total equity increased $ 152.8 million from the prior year , primarily due to $ 169.3 million of net income , $ 52.9 million from the effects of post-retirement benefit plan adjustments , $ 25.8 million of foreign currency translation adjustments due to the balance sheet effects of a weaker us dollar , $ 22.4 million from changes in unrealized losses on derivative instruments , and $ 10.5 million from the effects of share-based compensation . these increases were partially offset by $ 68.6 million of common stock repurchases and $ 60.3 million of dividends . see `` note 20 . shareholders ' equity `` in part ii , item 8 of this form 10-k. cash flow discussion we generate a significant amount of cash from operating activities and from our investment portfolio . we also access domestic and international capital markets by issuing unsecured or secured debt and commercial paper . we use these sources of cash , along with our available cash balances , to fulfill our debt , lease , and dividend obligations and to fund portfolio investments and capital additions . we primarily use cash from operations and commercial paper issuances to fund daily operations . the timing of asset dispositions and changes in working capital impact cash flows from operations and portfolio proceeds . as a result , these cash flow components may vary materially from quarter to quarter and year to year . as of december 31 , 2013 , we had unrestricted cash balances of $ 379.7 million . net cash provided by operating activities net cash provided by operating activities of $ 400.7 million increased $ 30.5 million compared to 2012 . the increase was primarily driven by higher lease revenue , dividends from affiliates , and other changes in working capital , and was partially offset by higher maintenance and compensation payments . 46 portfolio investments and capital additions portfolio investments and capital additions primarily consist of purchases of operating assets , investments in affiliates , loans , and capitalized asset improvements .
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 Suspicious Activity Report : investment volume in the past two years was at the highest levels since we made our initial investment in europe nearly twenty years ago , and we anticipate another strong investment year in 2014. our continued investment in europe is a result of our commitment to assist our customers with the fleet replacement required in the european tank car market . we expect a slight increase in asc 's segment profit in 2014 as shipping volume should improve in 2014 as we expect to recapture some of the tonnage lost during the challenging weather conditions experienced in the fourth quarter of 2013. we believe portfolio management 's segment profit will decrease modestly in 2014. while we expect continued strong performance at the rolls-royce affiliates , aggregate earnings from affiliates and remarketing income will be lower . 28 segment operations segment profit is an internal performance measure used by the chief executive officer to assess the performance of each segment in a given period . segment profit includes all revenues , pretax earnings from affiliates , and net gains on asset dispositions that are attributable to the segments , as well as expenses that management believes are directly associated with the financing , maintenance , and operation of the revenue earning assets . segment profit excludes selling , general and administrative expenses , income taxes , and certain other amounts not allocated to the segments . these amounts are included in other . we allocate debt balances and related interest expense to each segment based upon a predetermined fixed recourse leverage level expressed as a ratio of recourse debt ( including off-balance-sheet debt ) to equity . the leverage levels are 5:1 for rail north america , 2:1 for rail international , 1.5:1 for asc , and 3:1 for portfolio management . we believe that by using this leverage and interest expense allocation methodology , each operating segment 's financial performance reflects appropriate risk-adjusted borrowing costs . rail north america segment summary in 2013 , rail north america continued to experience strong demand for tank cars , which led to historically high lease rate pricing and longer lease terms . the weighted average lease renewal rate on cars in our lease price index ( the “ lpi , ” see definition below ) increased 34.5 % from the weighted average expiring lease rate , compared to an increase of 25.6 % in 2012 and 6.9 % in 2011 . lease terms on renewals for cars in the lpi averaged 62 months in 2013 , compared to 60 months in 2012 and 45 months in 2011 . during 2013 , an average of 107,721 railcars were on lease compared to 107,255 in 2012 . utilization was 98.5 % at the end of 2013 , compared to 97.9 % at the end of 2012 . in 2014 , we expect higher lease revenue , a modest decline in remarketing income , and increased maintenance expense as we work through the tank car compliance cycle . leases for approximately 20,000 railcars will expire in 2014 , and we expect strong renewal success at attractive rates , particularly for tank cars . however , cars that serve the coal markets , including 2,750 cars that have leases expiring in 2014 , are experiencing relatively weak demand , and we expect that utilization and lease pricing for these cars will remain below historical norms . in 2011 , we entered into a purchase agreement for 12,500 railcars , which was the largest such commitment in our history . under this agreement , we have taken delivery of 5,900 railcars as of december 31 , 2013 , and expect to take delivery of 2,500 railcars in 2014. we also expect to acquire an additional 900 new railcars outside of this agreement in 2014. we may add other selected assets to our fleet , although rising asset prices may impact our investment spending . 29 the following table shows rail north america 's segment results for the years ended december 31 ( in millions ) : replace_table_token_9_th the following table shows the components of rail north america 's lease revenue for the years ended december 31 ( in millions ) : replace_table_token_10_th lease price index our lpi is an internally-generated business indicator that measures lease rate pricing on renewals within our north american railcar fleet . we calculate the index using the weighted average lease rate for a group of railcar types that we believe best represents our overall north american fleet . the average renewal lease rate change is reported as the percentage change between the average renewal lease rate and the average expiring lease rate , weighted by fleet composition . the average renewal lease term is reported in months and reflects the average renewal lease term of railcar types in the lpi , weighted by fleet composition . 30 rail north america fleet data the following table shows fleet activity for rail north america railcars for the years ended december 31 : replace_table_token_11_th 31 the following table shows fleet activity for rail north america locomotives for the years ended december 31 : replace_table_token_12_th segment profit in 2013 , segment profit increased to $ 231.6 million , compared to $ 209.3 million in 2012 , primarily due to higher lease revenue and net gain on asset dispositions , partially offset by increased maintenance expense . in 2012 , segment profit increased to $ 209.3 million compared to $ 172.7 million in 2011. the 2011 results included $ 5.5 million of revenue from a leveraged lease adjustment that related to changes in the timing of the taxable income from a leveraged lease structure . excluding the effect of this item , segment profit increased $ 42.1 million , primarily due to higher lease revenue and gains on asset dispositions combined with lower maintenance expense . story_separator_special_tag the environment for investment in inland marine and container assets continues to be challenging as relatively inexpensive sources of capital are aggressively pursuing these asset classes . in 2013 , we dissolved our singco and somargas marine affiliates , with each partner taking direct ownership of five liquefied gas carrying vessels ( the `` norgas vessels `` ) with an aggregate value of $ 151.8 million and recognized a pretax gain of $ 2.5 million , which is reflected in share of affiliates ' earnings . in connection with the dissolution we paid $ 101.3 million , primarily to satisfy our share of the affiliates ' external debt . the vessels continue to operate in a vessel pooling arrangement that our former partner manages . in 2012 , our gas compression equipment leasing affiliate , enerven compression , llc , sold substantially all of its assets . in connection with this disposition we recognized an impairment loss of $ 14.8 million , which is reflected in share of affiliates ' earnings . in 2013 , we reversed $ 1.1 million of the loss due to higher than expected proceeds from the asset sales . the joint venture is in the process of liquidating . in 2011 , our clipper fourth affiliates were dissolved . in connection with the dissolutions , we paid $ 62.1 million , primarily to satisfy our share of the affiliates ' outstanding debt and took ownership of six chemical parcel tankers ( the `` nordic vessels `` ) with an aggregate value of $ 88.8 million . additionally , we recognized an impairment loss of $ 5.2 million , which is reflected in share of affiliates ' earnings . portfolio management 's total asset base was $ 856.9 million at december 31 , 2013 compared to $ 797.4 million at december 31 , 2012 , and $ 846.6 million at december 31 , 2011 . the estimated net book value equivalent of assets managed by portfolio management for third parties was $ 125.3 million at december 31 , 2013 . 39 the following table shows portfolio management 's segment results for the years ended december 31 ( in millions ) : replace_table_token_16_th 40 segment profit in 2013 , segment profit of $ 74.4 million was $ 24.2 million higher than the prior year . this increase was driven by higher marine net operating results which includes the norgas vessels that are now wholly owned , higher rrpf affiliates ' earnings and the absence of the enerven impairment , partially offset by lower lease revenues . in 2012 , segment profit of $ 50.2 million was $ 2.6 million higher than 2011. the increase was primarily due to higher net gains on asset dispositions , higher earnings from the rrpf affiliates and lower operating costs . these increases were partially offset by an impairment loss at our enerven affiliate . revenues lease revenue was $ 5.7 million lower in 2013 , primarily due to the sale of barges and other equipment in the current year . marine operating revenue was $ 25.2 million higher than prior year , primarily due to revenue from the norgas vessels , which were acquired in april 2013. other revenue was $ 0.9 million higher than prior year , primarily due to distributions received from investment funds in 2013. in 2012 , lease revenue was $ 6.9 million lower than 2011 , primarily due to the sale of barges and other equipment . marine operating revenue was $ 8.6 million higher than prior year , primarily due to a full year of revenue from the nordic vessels acquired in 2011. other income was $ 0.8 million higher than 2011 , primarily due to interest income from new loans . expenses in 2013 , marine operating expense was $ 16.4 million higher than prior year , primarily due to the norgas vessels acquired in april 2013. depreciation expense was $ 1.3 million higher , also due to the norgas vessels , partially offset by sales of equipment previously on lease . other operating expense was $ 1.5 million higher , primarily due to the reversal of a provision for losses upon the sale of a non-performing leveraged lease investment in the prior year . in 2012 , marine operating expense increased $ 8.2 million and depreciation expense increased $ 2.6 million , both primarily due to a full year of operations for the nordic vessels . operating lease expense decreased $ 1.2 million , primarily due to the sale of barges at the end of 2011 and the early termination of a lease in 2012. other operating expense decreased $ 3.4 million , primarily due to a $ 2.6 million decrease in other operating costs for owned and pooled barges and higher reversals of provisions for losses , which were $ 1.2 million in 2012 and $ 0.4 million in 2011. in 2012 , a reversal was recorded upon the sale of a non-performing leveraged lease investment . other income ( expense ) net gain on asset dispositions in 2013 was $ 3.7 million lower than prior year , primarily due to lower residual sharing receipts . interest expense was $ 1.0 million lower , primarily due to lower rates . other income in the prior year was positively impacted by the favorable remeasurement of derivatives . share of affiliates ' earnings in 2013 was $ 27.5 million higher , primarily due to the absence of operating losses and an impairment loss at our enerven affiliate in the prior year . in the current year , our share of rrpf affiliates ' earnings of $ 52.6 million included gains of $ 17.6 million resulting from the sales of engines . the rrpf affiliates had 403 aircraft engines at the end of 2013 compared to 402 at the end of 2012. net gains on asset dispositions in 2012 increased $ 6.6 million compared to 2011 , primarily due to a $ 5.3 million residual

