it also appears that as the semiconductor industry continues to consolidate , capital spending within the industry is becoming more concentrated among fewer and larger semiconductor manufacturers , which seems to be resulting in more rational addition of production capacity , and , in turn , less cyclicality within the industry . since we serve the entire semiconductor market , fluctuations in demand for our products have generally reflected overall industry activity . our results over the last two fiscal years have demonstrated these trends as we have experienced relatively slow growth with more seasonal swings in demand . there are many factors that make it difficult for us to predict future revenue trends for our business , including those discussed in part i , item 1a entitled `` risk factors `` in this form 10-k. 27 index revenue for fiscal 2013 was $ 433.1 million , which represented an increase of 1.3 % from $ 427.7 million reported for fiscal 2012. the increase in revenue from fiscal 2012 was driven by a higher-priced product mix , partially offset by foreign exchange rate changes , primarily due to the weakening of the japanese yen against the u.s. dollar . we experienced increased sales of our slurries for polishing aluminum and dielectrics . these increases were partially offset by decreased sales of our tungsten slurry , esf and polishing pads product lines . revenue generated from polishing pads decreased in fiscal 2013 , although we increased the actual number of pads sold . the decrease in revenue was due to competitive pricing pressure and customer efficiencies in certain customers ' use of our pads , combined with the slow pace of new business wins . gross profit expressed as a percentage of revenue for fiscal 2013 was 49.0 % , which represents an increase from the 47.7 % reported for fiscal 2012 , and was above the upper end of our full year guidance range of 46 % to 48 % of revenue . the increase in gross profit percentage from fiscal 2012 was primarily due to the favorable impact of the weaker japanese yen and lower fixed manufacturing costs . we are increasing our gross profit guidance for full fiscal year 2014 to be in the range of 48 % to 50 % of revenue . however , we may experience fluctuations in our gross profit due to a number of factors , including the extent to which we utilize our manufacturing capacity , foreign exchange fluctuations and changes in our product mix , which may cause our quarterly gross profit to be above or below this range . operating expenses of $ 135.6 million , which include research , development and technical , selling and marketing , and general and administrative expenses , decreased 1.4 % , or $ 1.9 million , from the $ 137.5 million reported for fiscal 2012. the decrease was primarily due to the absence of bad debt expense related to a customer bankruptcy that we reported in the second quarter of fiscal 2012 and costs associated with our fiscal 2012 leveraged recapitalization with a special cash dividend , as well as lower depreciation expense . these decreases were partially offset by higher staffing-related costs , including costs associated with our annual incentive cash bonus program ( aip ) . in fiscal 2014 , we are lowering our full year guidance range for operating expenses to be in the range of $ 131 million to $ 135 million . diluted earnings per share of $ 2.14 in fiscal 2013 increased 22.3 % , or $ 0.39 , from $ 1.75 reported in fiscal 2012. the increase was primarily due to a higher gross profit margin , a lower effective tax rate , a favorable impact of the weaker japanese yen reflected in other income and higher sales . the decrease in the effective tax rate was primarily due to the reinstatement of the u.s. research and experimentation tax credit and our election in the third quarter of fiscal 2013 to permanently reinvest the earnings of our subsidiaries in japan and south korea . critical accounting policies and estimates this md & a , as well as disclosures included elsewhere in this form 10-k , are based upon our audited 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 , revenues and expenses , and related disclosure of contingencies . on an ongoing basis , we evaluate the estimates used , including those related to bad debt expense , warranty obligations , inventory valuation , valuation and classification of auction rate securities , impairment of long-lived assets and investments , business combinations , goodwill , other intangible assets , share-based compensation , income taxes and contingencies . we base our estimates on historical experience , current conditions 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 , as well as for identifying and assessing our accounting treatment with respect to commitments and contingencies . actual results may differ from these estimates under different assumptions or conditions . we believe the following critical accounting policies involve significant judgments and estimates used in the preparation of our consolidated financial statements . 28 index allowance for doubtful accounts we maintain an allowance for doubtful accounts for estimated losses resulting from the potential inability of our customers to make required payments . our allowance for doubtful accounts is based on historical collection experience , adjusted for any specific known conditions or circumstances . while historical experience may provide a reasonable estimate of uncollectible accounts , actual results may differ from what was recorded . story_separator_special_tag results of operations the following table sets forth , for the periods indicated , the percentage of revenue of certain line items included in our historical statements of income : replace_table_token_5_th the results of operations for the fiscal year ended september 30 , 2013 include certain adjustments to correct prior period amounts , which we have determined to be immaterial to the current period and the prior periods to which they relate . these adjustments included the correction of a foreign deferred tax asset recorded in the first quarter of fiscal 2013 and the correction of additional historical tax accounting recorded in the fourth quarter of fiscal 2013. the correction of the foreign tax asset related to the reversal of a $ 1.7 million deferred tax asset for cumulative net operating losses ( nols ) associated with our facility in south korea since its opening in 2011 , as these nols are expected to be consumed during periods a tax holiday is in effect . additional tax accounting corrections resulted in a reduction of income tax expense of $ 0.4 million and adjustments to the consolidated balance sheet including : an increase of $ 0.8 million in deferred tax assets ; an increase of $ 0.8 million in additional paid-in capital ; a decrease of $ 0.3 million in income taxes payable ; and a decrease of $ 0.1 million in deferred tax liabilities . collectively , these adjustments reduced net income for fiscal 2013 by $ 1.3 million and diluted earnings per share for the same period by approximately $ 0.05. year ended september 30 , 2013 , versus year ended september 30 , 2012 revenue revenue was $ 433.1 million in fiscal 2013 , which represented an increase of 1.3 % , or $ 5.5 million , from fiscal 2012. the increase in revenue was primarily due to an $ 11.8 million increase from a higher-priced product mix , partially offset by a $ 5.9 million decrease due to the effect of foreign exchange rate changes , primarily due to the weakening of the japanese yen . we saw increases in sales of our slurries for polishing aluminum and in our dielectrics slurry product line , partially offset by decreases in revenue in our tungsten slurry , esf and polishing pads product lines . similar to fiscal 2012 , we saw a strengthening of demand in the second half of fiscal 2013 after a period of softer demand during the first half of the fiscal year . we continue to be cautious regarding future demand trends due to uncertainty within the semiconductor industry , compounded by continued macroeconomic uncertainty . 33 index cost of goods sold total cost of goods sold was $ 221.0 million in fiscal 2013 , which represented a decrease of 1.2 % , or $ 2.6 million , from fiscal 2012. the decrease in cost of goods sold was primarily due to a $ 7.1 million decrease due to the effects of foreign exchange rate changes , primarily due to the weakening of the japanese yen , a $ 4.7 million decrease in variable manufacturing costs and $ 3.2 million in lower fixed manufacturing costs . these decreases in cost of goods sold were partially offset by a $ 13.7 million increase due to a higher-cost product mix . engineered abrasive particles are significant raw materials that we use in many of our cmp slurries . in an effort to mitigate our risk to rising raw material costs and to increase supply assurance and quality performance requirements , we have entered into multi-year supply agreements with a number of suppliers . for more information about our supply contracts , see `` tabular disclosure of contractual obligations `` included in item 7 of part ii of this form 10-k. our need for additional quantities or different kinds of key raw materials in the future has required , and will continue to require , that we enter into new supply arrangements with third parties . future arrangements may result in costs which are different from those in the existing agreements . for example , we currently expect higher cost of goods sold on a transitional basis associated with a new contract with an existing supplier . in addition , a number of factors could impact the future cost of raw materials , packaging , freight and labor . we also expect to continue to invest in our supply chain to improve product quality , reduce variability and improve our manufacturing product yields . gross profit our gross profit as a percentage of revenue was 49.0 % in fiscal 2013 as compared to 47.7 % for fiscal 2012 , and was above our full year guidance range of 46 % to 48 % . the increase in gross profit as a percentage of revenue was primarily due to the favorable impact of the weaker japanese yen and lower fixed manufacturing costs . we expect our gross profit percentage for full fiscal year 2014 to be in the range of 48 % to 50 % . however , we may experience fluctuations in our gross profit due to a number of factors , including the extent to which we utilize our manufacturing capacity , foreign exchange fluctuations and changes in our product mix , which may cause our quarterly gross profit to be above or below this range . research , development and technical total research , development and technical expenses were $ 61.4 million in fiscal 2013 , which represented an increase of 4.7 % , or $ 2.7 million , from fiscal 2012. the increase was primarily due to $ 4.9 million in higher staffing-related costs , including costs associated with our aip , partially offset by $ 1.7 million lower depreciation expense and $ 0.3 million in lower product sample costs . our research , development and technical efforts are focused on the following main areas : · research related to fundamental cmp technology ;

liquidity and capital resources as discussed in our annual report on form 10-k for the fiscal year ended september 30 , 2012 , we completed a leveraged recapitalization during our fiscal quarter ended march 31 , 2012. in conjunction with this recapitalization , we declared and paid a special cash dividend of $ 15 per share , or $ 347.1 million in aggregate . we funded the dividend with $ 175.0 million from our term loan and $ 172.1 million of existing company cash balances . we had cash flows from operating activities of $ 85.5 million in fiscal 2013 , $ 66.4 million in fiscal 2012 and $ 93.6 million in fiscal 2011. our cash provided by operating activities in fiscal 2013 represented $ 84.6 million in net income plus non-cash items and a $ 0.9 million increase in cash flow due to a net decrease in working capital . the increase in cash from operations in fiscal 2013 from fiscal 2012 was primarily due to increased net income and decreases in working capital amounts associated with lower inventories and higher accrued liabilities . the decrease in inventories was primarily due to raw material purchases made in the fourth quarter of fiscal 2012 associated with a new supply agreement with an existing supplier , which did not repeat in fiscal 2013. the increase in accrued liabilities was primarily due to increased accruals for compensation , including costs associated with our aip . 37 index we used $ 14.6 million in investing activities in fiscal 2013 representing purchases of property , plant and equipment . we used $ 19.7 million in investing activities in fiscal 2012 of which $ 19.6 million represented purchases of property , plant and equipment . capital expenditures in fiscal 2012 included the completion of payment for the fiscal 2011 construction of our facility in south korea . we used $ 28.2 million in investing activities in fiscal 2011 of which $ 28.1 million was for purchases of property , plant and equipment .


 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.
     ```liquidity and capital resources as discussed in our annual report on form 10-k for the fiscal year ended september 30 , 2012 , we completed a leveraged recapitalization during our fiscal quarter ended march 31 , 2012. in conjunction with this recapitalization , we declared and paid a special cash dividend of $ 15 per share , or $ 347.1 million in aggregate . we funded the dividend with $ 175.0 million from our term loan and $ 172.1 million of existing company cash balances . we had cash flows from operating activities of $ 85.5 million in fiscal 2013 , $ 66.4 million in fiscal 2012 and $ 93.6 million in fiscal 2011. our cash provided by operating activities in fiscal 2013 represented $ 84.6 million in net income plus non-cash items and a $ 0.9 million increase in cash flow due to a net decrease in working capital . the increase in cash from operations in fiscal 2013 from fiscal 2012 was primarily due to increased net income and decreases in working capital amounts associated with lower inventories and higher accrued liabilities . the decrease in inventories was primarily due to raw material purchases made in the fourth quarter of fiscal 2012 associated with a new supply agreement with an existing supplier , which did not repeat in fiscal 2013. the increase in accrued liabilities was primarily due to increased accruals for compensation , including costs associated with our aip . 37 index we used $ 14.6 million in investing activities in fiscal 2013 representing purchases of property , plant and equipment . we used $ 19.7 million in investing activities in fiscal 2012 of which $ 19.6 million represented purchases of property , plant and equipment . capital expenditures in fiscal 2012 included the completion of payment for the fiscal 2011 construction of our facility in south korea . we used $ 28.2 million in investing activities in fiscal 2011 of which $ 28.1 million was for purchases of property , plant and equipment .
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 Suspicious Activity Report : it also appears that as the semiconductor industry continues to consolidate , capital spending within the industry is becoming more concentrated among fewer and larger semiconductor manufacturers , which seems to be resulting in more rational addition of production capacity , and , in turn , less cyclicality within the industry . since we serve the entire semiconductor market , fluctuations in demand for our products have generally reflected overall industry activity . our results over the last two fiscal years have demonstrated these trends as we have experienced relatively slow growth with more seasonal swings in demand . there are many factors that make it difficult for us to predict future revenue trends for our business , including those discussed in part i , item 1a entitled `` risk factors `` in this form 10-k. 27 index revenue for fiscal 2013 was $ 433.1 million , which represented an increase of 1.3 % from $ 427.7 million reported for fiscal 2012. the increase in revenue from fiscal 2012 was driven by a higher-priced product mix , partially offset by foreign exchange rate changes , primarily due to the weakening of the japanese yen against the u.s. dollar . we experienced increased sales of our slurries for polishing aluminum and dielectrics . these increases were partially offset by decreased sales of our tungsten slurry , esf and polishing pads product lines . revenue generated from polishing pads decreased in fiscal 2013 , although we increased the actual number of pads sold . the decrease in revenue was due to competitive pricing pressure and customer efficiencies in certain customers ' use of our pads , combined with the slow pace of new business wins . gross profit expressed as a percentage of revenue for fiscal 2013 was 49.0 % , which represents an increase from the 47.7 % reported for fiscal 2012 , and was above the upper end of our full year guidance range of 46 % to 48 % of revenue . the increase in gross profit percentage from fiscal 2012 was primarily due to the favorable impact of the weaker japanese yen and lower fixed manufacturing costs . we are increasing our gross profit guidance for full fiscal year 2014 to be in the range of 48 % to 50 % of revenue . however , we may experience fluctuations in our gross profit due to a number of factors , including the extent to which we utilize our manufacturing capacity , foreign exchange fluctuations and changes in our product mix , which may cause our quarterly gross profit to be above or below this range . operating expenses of $ 135.6 million , which include research , development and technical , selling and marketing , and general and administrative expenses , decreased 1.4 % , or $ 1.9 million , from the $ 137.5 million reported for fiscal 2012. the decrease was primarily due to the absence of bad debt expense related to a customer bankruptcy that we reported in the second quarter of fiscal 2012 and costs associated with our fiscal 2012 leveraged recapitalization with a special cash dividend , as well as lower depreciation expense . these decreases were partially offset by higher staffing-related costs , including costs associated with our annual incentive cash bonus program ( aip ) . in fiscal 2014 , we are lowering our full year guidance range for operating expenses to be in the range of $ 131 million to $ 135 million . diluted earnings per share of $ 2.14 in fiscal 2013 increased 22.3 % , or $ 0.39 , from $ 1.75 reported in fiscal 2012. the increase was primarily due to a higher gross profit margin , a lower effective tax rate , a favorable impact of the weaker japanese yen reflected in other income and higher sales . the decrease in the effective tax rate was primarily due to the reinstatement of the u.s. research and experimentation tax credit and our election in the third quarter of fiscal 2013 to permanently reinvest the earnings of our subsidiaries in japan and south korea . critical accounting policies and estimates this md & a , as well as disclosures included elsewhere in this form 10-k , are based upon our audited 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 , revenues and expenses , and related disclosure of contingencies . on an ongoing basis , we evaluate the estimates used , including those related to bad debt expense , warranty obligations , inventory valuation , valuation and classification of auction rate securities , impairment of long-lived assets and investments , business combinations , goodwill , other intangible assets , share-based compensation , income taxes and contingencies . we base our estimates on historical experience , current conditions 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 , as well as for identifying and assessing our accounting treatment with respect to commitments and contingencies . actual results may differ from these estimates under different assumptions or conditions . we believe the following critical accounting policies involve significant judgments and estimates used in the preparation of our consolidated financial statements . 28 index allowance for doubtful accounts we maintain an allowance for doubtful accounts for estimated losses resulting from the potential inability of our customers to make required payments . our allowance for doubtful accounts is based on historical collection experience , adjusted for any specific known conditions or circumstances . while historical experience may provide a reasonable estimate of uncollectible accounts , actual results may differ from what was recorded . story_separator_special_tag results of operations the following table sets forth , for the periods indicated , the percentage of revenue of certain line items included in our historical statements of income : replace_table_token_5_th the results of operations for the fiscal year ended september 30 , 2013 include certain adjustments to correct prior period amounts , which we have determined to be immaterial to the current period and the prior periods to which they relate . these adjustments included the correction of a foreign deferred tax asset recorded in the first quarter of fiscal 2013 and the correction of additional historical tax accounting recorded in the fourth quarter of fiscal 2013. the correction of the foreign tax asset related to the reversal of a $ 1.7 million deferred tax asset for cumulative net operating losses ( nols ) associated with our facility in south korea since its opening in 2011 , as these nols are expected to be consumed during periods a tax holiday is in effect . additional tax accounting corrections resulted in a reduction of income tax expense of $ 0.4 million and adjustments to the consolidated balance sheet including : an increase of $ 0.8 million in deferred tax assets ; an increase of $ 0.8 million in additional paid-in capital ; a decrease of $ 0.3 million in income taxes payable ; and a decrease of $ 0.1 million in deferred tax liabilities . collectively , these adjustments reduced net income for fiscal 2013 by $ 1.3 million and diluted earnings per share for the same period by approximately $ 0.05. year ended september 30 , 2013 , versus year ended september 30 , 2012 revenue revenue was $ 433.1 million in fiscal 2013 , which represented an increase of 1.3 % , or $ 5.5 million , from fiscal 2012. the increase in revenue was primarily due to an $ 11.8 million increase from a higher-priced product mix , partially offset by a $ 5.9 million decrease due to the effect of foreign exchange rate changes , primarily due to the weakening of the japanese yen . we saw increases in sales of our slurries for polishing aluminum and in our dielectrics slurry product line , partially offset by decreases in revenue in our tungsten slurry , esf and polishing pads product lines . similar to fiscal 2012 , we saw a strengthening of demand in the second half of fiscal 2013 after a period of softer demand during the first half of the fiscal year . we continue to be cautious regarding future demand trends due to uncertainty within the semiconductor industry , compounded by continued macroeconomic uncertainty . 33 index cost of goods sold total cost of goods sold was $ 221.0 million in fiscal 2013 , which represented a decrease of 1.2 % , or $ 2.6 million , from fiscal 2012. the decrease in cost of goods sold was primarily due to a $ 7.1 million decrease due to the effects of foreign exchange rate changes , primarily due to the weakening of the japanese yen , a $ 4.7 million decrease in variable manufacturing costs and $ 3.2 million in lower fixed manufacturing costs . these decreases in cost of goods sold were partially offset by a $ 13.7 million increase due to a higher-cost product mix . engineered abrasive particles are significant raw materials that we use in many of our cmp slurries . in an effort to mitigate our risk to rising raw material costs and to increase supply assurance and quality performance requirements , we have entered into multi-year supply agreements with a number of suppliers . for more information about our supply contracts , see `` tabular disclosure of contractual obligations `` included in item 7 of part ii of this form 10-k. our need for additional quantities or different kinds of key raw materials in the future has required , and will continue to require , that we enter into new supply arrangements with third parties . future arrangements may result in costs which are different from those in the existing agreements . for example , we currently expect higher cost of goods sold on a transitional basis associated with a new contract with an existing supplier . in addition , a number of factors could impact the future cost of raw materials , packaging , freight and labor . we also expect to continue to invest in our supply chain to improve product quality , reduce variability and improve our manufacturing product yields . gross profit our gross profit as a percentage of revenue was 49.0 % in fiscal 2013 as compared to 47.7 % for fiscal 2012 , and was above our full year guidance range of 46 % to 48 % . the increase in gross profit as a percentage of revenue was primarily due to the favorable impact of the weaker japanese yen and lower fixed manufacturing costs . we expect our gross profit percentage for full fiscal year 2014 to be in the range of 48 % to 50 % . however , we may experience fluctuations in our gross profit due to a number of factors , including the extent to which we utilize our manufacturing capacity , foreign exchange fluctuations and changes in our product mix , which may cause our quarterly gross profit to be above or below this range . research , development and technical total research , development and technical expenses were $ 61.4 million in fiscal 2013 , which represented an increase of 4.7 % , or $ 2.7 million , from fiscal 2012. the increase was primarily due to $ 4.9 million in higher staffing-related costs , including costs associated with our aip , partially offset by $ 1.7 million lower depreciation expense and $ 0.3 million in lower product sample costs . our research , development and technical efforts are focused on the following main areas : · research related to fundamental cmp technology ;

