our provision for loan losses expense was significantly lower in 2015 and 2014 than during the three previous years and reflects decreased levels of delinquencies , classified loans and net charge-offs . recent accounting standards for a discussion of recent accounting standards , please see note 2 - accounting pronouncements recently issued or adopted in the notes to consolidated financial statements in item 8 of this form 10-k. critical accounting policies certain of our accounting policies are important to an understanding of our financial condition , since they require management to make difficult , complex or subjective judgments , which may relate to matters that are inherently uncertain . estimates associated with these policies are susceptible to material changes as a result of changes in facts and circumstances . facts and circumstances that could affect these judgments include , but are not limited to , changes in interest rates , changes in the performance of the economy and changes in the financial condition of borrowers . management believes that its critical accounting policies include determining the allowance for loan losses , accounting for other-than-temporary impairment of securities , accounting for mortgage servicing rights , accounting for other real estate owned , and accounting for deferred income taxes . for additional information on our accounting policies see note 1 - organization and significant accounting principles in the notes to consolidated financial statements in item 8 of this form 10-k. allowance for loan loss . the allowance for loan losses is the amount estimated by management as necessary to cover losses inherent in the loan portfolio as of the balance sheet date . the allowance is established through the provision for loan losses , which is charged to income . determining the amount of the allowance for loan losses necessarily involves a high degree of subjectivity and requires us to make various assumptions and 39 judgments about the collectability of our loan portfolio , including the creditworthiness of our borrowers and the value of the real estate and other assets serving as collateral for the repayment of many of our loans . among the material estimates required to establish the allowance are : loss exposure at default ; the amount and timing of future cash flows on impacted loans ; value of collateral ; and determination of historical and current loss factors to be applied to the various elements of the portfolio . all of these estimates are susceptible to significant change . management reviews the level of the allowance at least quarterly and establishes the provision for loan losses based upon an evaluation of the portfolio , past loss experience , current economic conditions and other factors related to the collectability of the loan portfolio . to strengthen our loan review and classification process , we engage an independent consultant to review our classified loans and a significant sample of recently originated non-classified loans on a regular basis . we also enhanced our credit administration policies and procedures to improve our maintenance of updated financial data on commercial borrowers . while we believe the estimates and assumptions used in our determination of the adequacy of the allowance are reasonable , there can be no assurance that such estimates and assumptions will not be proven incorrect in the future , or that the actual amount of future provisions will not exceed the amount of past provisions or that any increased provisions that may be required will not adversely impact our financial condition and results of operations . in addition , the determination of the amount of our allowance for loan losses is subject to review by bank regulators as part of the routine examination process , which may result in the adjustment of reserves based upon their judgment of information available to them at the time of their examination . other-than-temporary impairment of securities . management reviews investment securities on an ongoing basis for the presence of other-than-temporary impairment ( otti ) , taking into consideration current market conditions ; fair value in relationship to cost ; extent and nature of the change in fair value ; issuer rating changes and trends ; whether management intends to sell a security or if it is likely that we will be required to sell the security before recovery of the amortized cost basis of the investment , which may be upon maturity ; and other factors . for debt securities , if management intends to sell the security or it is likely that we will be required to sell the security before recovering our cost basis , the entire impairment loss would be recognized in earnings as an otti . if management does not intend to sell the security and it is not more likely than not that we will be required to sell the security , but management does not expect to recover the entire amortized cost basis of the security , only the portion of the impairment loss representing credit losses would be recognized in earnings . the credit loss on a security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected . projected cash flows are discounted by the original or current effective interest rate depending on the nature of the security being measured for potential otti . the remaining impairment related to all other factors , i.e . , the difference between the present value of the cash flows expected to be collected and fair value , is recognized as a charge to other comprehensive income ( loss ) . impairment losses related to all other factors are presented as separate components within accumulated other comprehensive income ( loss ) . mortgage servicing rights . we record mortgage servicing rights on loans sold to fannie mae with servicing retained as well as for acquired servicing rights . story_separator_special_tag our weighted average yield on interest-earning assets was 4.76 % for the year ended december 31 , 2015 , compared to 5.06 % for the year ended december 31 , 2014. the weighted average yield on loans decreased , to 5.08 % for the year ended december 31 , 2015 from 5.18 % for the year ended december 31 , 2014. the average balance of gross loans receivable increased $ 29.1 million , or 7.1 % , for the year ended december 31 , 2015 as compared to the prior year . the weighted average yield on available for sale securities was 0.64 % for the year ended december 31 , 2015 compared to 1.54 % for the year ended december 31 , 2014. the average balance of available for sale securities and interest bearing accounts increased $ 20.8 million , or 150.9 % , for the year ended december 31 , 2014 as compared to the prior year . interest expense . interest expense increased $ 329,000 , or 13.6 % , to $ 2.8 million for the year ended december 31 , 2015 , from $ 2.4 million for the year ended december 31 , 2014. this increase reflects primarily overall higher balances of deposits partially offset by a decrease in the average balance of fhlb advances and a lower weighted average cost of interest-bearing deposits during the year . our weighted average cost of interest-bearing liabilities was 0.62 % for the year ended december 31 , 2015 , compared to 0.61 % for the year ended december 31 , 2014 . 46 interest paid on deposits increased $ 377,000 , or 16.6 % , to $ 2.6 million for the year ended december 31 , 2015 , from $ 2.3 million for the year ended december 31 , 2014. this increase resulted from a $ 43.2 million increase in the average balances of deposits , which was partially offset by a lower weighted average cost of deposits during the year . the primary reason for the increase was the additional expense recognized in 2015 compared to 2014 , for the amortization of the premium paid for the deposits acquired in the branch transaction in august 2014. we experienced a two basis point increase in the average rate paid on deposits during the year ended december 31 , 2015 compared to 2014. interest expense on borrowings decreased $ 48,000 , or 31.2 % , to $ 106,000 for the year ended december 31 , 2015 from $ 154,000 for the year ended december 31 , 2014. the decrease was a result of a 15 basis point decrease in our cost of borrowings to 0.43 % for the year ended december 31 , 2015 from 0.58 % for the year ended december 31 , 2014 and a $ 1.6 million decrease in the average balance of borrowings outstanding during the year . net interest income . net interest income increased $ 768,000 , or 4.1 % , to $ 19.7 million for the year ended december 31 , 2015 , from $ 19.0 million for the year ended december 31 , 2014. the increase primarily resulted from increased interest income due to higher average loan balances and lower average balances and cost of borrowings . this was partially offset by higher average balances of interest-bearing deposits during 2015 as compared to 2014. in addition , our average yield on loans receivable decreased during the year ended december 31 , 2015 as compared to the prior year as new loan origination s and re-pricing adjustable rate loans reflect the continued low rate environment . our net interest margin was 4.17 % for the year ended december 31 , 2015 , compared to 4.49 % for the year ended december 31 , 2014. provision for loan losses . we establish our allowance for loan losses through provisions for loan losses , which are charged to earnings , at a level required to reflect management 's best estimate of the probable incurred credit losses in the loan portfolio . in evaluating the level of the allowance for loan losses , management considers historical loss experience , the types of loans and the amount of loans in the loan portfolio , adverse situations that may affect borrowers ' ability to repay , estimated value of any underlying collateral , peer group data , prevailing economic conditions , and current factors . large groups of smaller balance homogeneous loans , such as one-to four-family , commercial and multifamily , home equity and consumer loans , are evaluated in the aggregate using historical loss factors adjusted for current economic conditions and other relevant data . loans for which management has concerns about the borrowers ' ability to repay , are evaluated individually , and specific loss allocations are provided for these loans when necessary . a provision of $ 400,000 was made during the year ended december 31 , 2015 , compared to a provision of $ 800,000 during the year ended december 31 , 2014. the reduced provision primarily reflects improvements in our credit metrics partially offset by higher average loan balances and changes in the composition of our loan portfolio . for the year ended december 31 , 2015 , the annualized percentage of net charge-offs to average loans decreased 11 basis points to 0.03 % from 0.14 % for the year ended december 31 , 2014. nonperforming loans to total loans decreased to 0.47 % at december 31 , 2015 from 0.89 % at december 31 , 2014. see - comparison of financial condition at december 31 , 2015 and december 31 , 2014 – delinquencies and nonperforming assets for more information on nonperforming loans in 2015 . 47 noninterest income . noninterest income increased $ 891,000 , or 20.4 % , to $ 5.3 million for the year ended december 31 , 2015 , as compared to $ 4.4 million for the year ended december 31 , 2014 as reflected below

cash and securities . we increased our on-balance sheet liquidity in 2015 in order to manage liquidity and interest rate risk . cash , cash equivalents and our available-for-sale securities increased by $ 14.1 million , or 34.6 % , to $ 55.0 million at december 31 , 2015. cash and cash equivalents increased by $ 19.0 million , or 63.8 % , to $ 48.3 million at december 31 , 2015. available-for-sale securities , which consist primarily of agency mortgage-backed securities , decreased by $ 4.8 million , or 41.9 % , to $ 6.7 million at december 31 , 2015 from $ 11.5 million at december 31 , 2014 as a result of pay downs . at december 31 , 2015 , our securities portfolio consisted of 12 agency mortgage-backed securities , one non-agency mortgage-backed securities and five municipal securities with a fair value of $ 6.7 million . at december 31 , 2014 , our securities portfolio consisted of 15 agency mortgage-backed securities , five non-agency mortgage-backed securities and five municipal bonds with a fair value of $ 11.5 million . during the year ended december 31 , 2015 , we recognized no non-cash otti charges on our investment securities . our one non-agency mortgage-backed security had an unrealized loss but management determined the decline in value was not related to specific credit deterioration . the unrealized loss was caused by changes in interest rates and market illiquidity causing a decline in the fair value subsequent to the purchase . the contractual terms of this security does not permit the issuer to settle the security at a price less than par . we do not intend to sell this security and it is more likely than not that we will not be required to sell this security before anticipated recovery of the remaining amortized cost basis . 42 loans .


 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 and securities . we increased our on-balance sheet liquidity in 2015 in order to manage liquidity and interest rate risk . cash , cash equivalents and our available-for-sale securities increased by $ 14.1 million , or 34.6 % , to $ 55.0 million at december 31 , 2015. cash and cash equivalents increased by $ 19.0 million , or 63.8 % , to $ 48.3 million at december 31 , 2015. available-for-sale securities , which consist primarily of agency mortgage-backed securities , decreased by $ 4.8 million , or 41.9 % , to $ 6.7 million at december 31 , 2015 from $ 11.5 million at december 31 , 2014 as a result of pay downs . at december 31 , 2015 , our securities portfolio consisted of 12 agency mortgage-backed securities , one non-agency mortgage-backed securities and five municipal securities with a fair value of $ 6.7 million . at december 31 , 2014 , our securities portfolio consisted of 15 agency mortgage-backed securities , five non-agency mortgage-backed securities and five municipal bonds with a fair value of $ 11.5 million . during the year ended december 31 , 2015 , we recognized no non-cash otti charges on our investment securities . our one non-agency mortgage-backed security had an unrealized loss but management determined the decline in value was not related to specific credit deterioration . the unrealized loss was caused by changes in interest rates and market illiquidity causing a decline in the fair value subsequent to the purchase . the contractual terms of this security does not permit the issuer to settle the security at a price less than par . we do not intend to sell this security and it is more likely than not that we will not be required to sell this security before anticipated recovery of the remaining amortized cost basis . 42 loans .
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 Suspicious Activity Report : our provision for loan losses expense was significantly lower in 2015 and 2014 than during the three previous years and reflects decreased levels of delinquencies , classified loans and net charge-offs . recent accounting standards for a discussion of recent accounting standards , please see note 2 - accounting pronouncements recently issued or adopted in the notes to consolidated financial statements in item 8 of this form 10-k. critical accounting policies certain of our accounting policies are important to an understanding of our financial condition , since they require management to make difficult , complex or subjective judgments , which may relate to matters that are inherently uncertain . estimates associated with these policies are susceptible to material changes as a result of changes in facts and circumstances . facts and circumstances that could affect these judgments include , but are not limited to , changes in interest rates , changes in the performance of the economy and changes in the financial condition of borrowers . management believes that its critical accounting policies include determining the allowance for loan losses , accounting for other-than-temporary impairment of securities , accounting for mortgage servicing rights , accounting for other real estate owned , and accounting for deferred income taxes . for additional information on our accounting policies see note 1 - organization and significant accounting principles in the notes to consolidated financial statements in item 8 of this form 10-k. allowance for loan loss . the allowance for loan losses is the amount estimated by management as necessary to cover losses inherent in the loan portfolio as of the balance sheet date . the allowance is established through the provision for loan losses , which is charged to income . determining the amount of the allowance for loan losses necessarily involves a high degree of subjectivity and requires us to make various assumptions and 39 judgments about the collectability of our loan portfolio , including the creditworthiness of our borrowers and the value of the real estate and other assets serving as collateral for the repayment of many of our loans . among the material estimates required to establish the allowance are : loss exposure at default ; the amount and timing of future cash flows on impacted loans ; value of collateral ; and determination of historical and current loss factors to be applied to the various elements of the portfolio . all of these estimates are susceptible to significant change . management reviews the level of the allowance at least quarterly and establishes the provision for loan losses based upon an evaluation of the portfolio , past loss experience , current economic conditions and other factors related to the collectability of the loan portfolio . to strengthen our loan review and classification process , we engage an independent consultant to review our classified loans and a significant sample of recently originated non-classified loans on a regular basis . we also enhanced our credit administration policies and procedures to improve our maintenance of updated financial data on commercial borrowers . while we believe the estimates and assumptions used in our determination of the adequacy of the allowance are reasonable , there can be no assurance that such estimates and assumptions will not be proven incorrect in the future , or that the actual amount of future provisions will not exceed the amount of past provisions or that any increased provisions that may be required will not adversely impact our financial condition and results of operations . in addition , the determination of the amount of our allowance for loan losses is subject to review by bank regulators as part of the routine examination process , which may result in the adjustment of reserves based upon their judgment of information available to them at the time of their examination . other-than-temporary impairment of securities . management reviews investment securities on an ongoing basis for the presence of other-than-temporary impairment ( otti ) , taking into consideration current market conditions ; fair value in relationship to cost ; extent and nature of the change in fair value ; issuer rating changes and trends ; whether management intends to sell a security or if it is likely that we will be required to sell the security before recovery of the amortized cost basis of the investment , which may be upon maturity ; and other factors . for debt securities , if management intends to sell the security or it is likely that we will be required to sell the security before recovering our cost basis , the entire impairment loss would be recognized in earnings as an otti . if management does not intend to sell the security and it is not more likely than not that we will be required to sell the security , but management does not expect to recover the entire amortized cost basis of the security , only the portion of the impairment loss representing credit losses would be recognized in earnings . the credit loss on a security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected . projected cash flows are discounted by the original or current effective interest rate depending on the nature of the security being measured for potential otti . the remaining impairment related to all other factors , i.e . , the difference between the present value of the cash flows expected to be collected and fair value , is recognized as a charge to other comprehensive income ( loss ) . impairment losses related to all other factors are presented as separate components within accumulated other comprehensive income ( loss ) . mortgage servicing rights . we record mortgage servicing rights on loans sold to fannie mae with servicing retained as well as for acquired servicing rights . story_separator_special_tag our weighted average yield on interest-earning assets was 4.76 % for the year ended december 31 , 2015 , compared to 5.06 % for the year ended december 31 , 2014. the weighted average yield on loans decreased , to 5.08 % for the year ended december 31 , 2015 from 5.18 % for the year ended december 31 , 2014. the average balance of gross loans receivable increased $ 29.1 million , or 7.1 % , for the year ended december 31 , 2015 as compared to the prior year . the weighted average yield on available for sale securities was 0.64 % for the year ended december 31 , 2015 compared to 1.54 % for the year ended december 31 , 2014. the average balance of available for sale securities and interest bearing accounts increased $ 20.8 million , or 150.9 % , for the year ended december 31 , 2014 as compared to the prior year . interest expense . interest expense increased $ 329,000 , or 13.6 % , to $ 2.8 million for the year ended december 31 , 2015 , from $ 2.4 million for the year ended december 31 , 2014. this increase reflects primarily overall higher balances of deposits partially offset by a decrease in the average balance of fhlb advances and a lower weighted average cost of interest-bearing deposits during the year . our weighted average cost of interest-bearing liabilities was 0.62 % for the year ended december 31 , 2015 , compared to 0.61 % for the year ended december 31 , 2014 . 46 interest paid on deposits increased $ 377,000 , or 16.6 % , to $ 2.6 million for the year ended december 31 , 2015 , from $ 2.3 million for the year ended december 31 , 2014. this increase resulted from a $ 43.2 million increase in the average balances of deposits , which was partially offset by a lower weighted average cost of deposits during the year . the primary reason for the increase was the additional expense recognized in 2015 compared to 2014 , for the amortization of the premium paid for the deposits acquired in the branch transaction in august 2014. we experienced a two basis point increase in the average rate paid on deposits during the year ended december 31 , 2015 compared to 2014. interest expense on borrowings decreased $ 48,000 , or 31.2 % , to $ 106,000 for the year ended december 31 , 2015 from $ 154,000 for the year ended december 31 , 2014. the decrease was a result of a 15 basis point decrease in our cost of borrowings to 0.43 % for the year ended december 31 , 2015 from 0.58 % for the year ended december 31 , 2014 and a $ 1.6 million decrease in the average balance of borrowings outstanding during the year . net interest income . net interest income increased $ 768,000 , or 4.1 % , to $ 19.7 million for the year ended december 31 , 2015 , from $ 19.0 million for the year ended december 31 , 2014. the increase primarily resulted from increased interest income due to higher average loan balances and lower average balances and cost of borrowings . this was partially offset by higher average balances of interest-bearing deposits during 2015 as compared to 2014. in addition , our average yield on loans receivable decreased during the year ended december 31 , 2015 as compared to the prior year as new loan origination s and re-pricing adjustable rate loans reflect the continued low rate environment . our net interest margin was 4.17 % for the year ended december 31 , 2015 , compared to 4.49 % for the year ended december 31 , 2014. provision for loan losses . we establish our allowance for loan losses through provisions for loan losses , which are charged to earnings , at a level required to reflect management 's best estimate of the probable incurred credit losses in the loan portfolio . in evaluating the level of the allowance for loan losses , management considers historical loss experience , the types of loans and the amount of loans in the loan portfolio , adverse situations that may affect borrowers ' ability to repay , estimated value of any underlying collateral , peer group data , prevailing economic conditions , and current factors . large groups of smaller balance homogeneous loans , such as one-to four-family , commercial and multifamily , home equity and consumer loans , are evaluated in the aggregate using historical loss factors adjusted for current economic conditions and other relevant data . loans for which management has concerns about the borrowers ' ability to repay , are evaluated individually , and specific loss allocations are provided for these loans when necessary . a provision of $ 400,000 was made during the year ended december 31 , 2015 , compared to a provision of $ 800,000 during the year ended december 31 , 2014. the reduced provision primarily reflects improvements in our credit metrics partially offset by higher average loan balances and changes in the composition of our loan portfolio . for the year ended december 31 , 2015 , the annualized percentage of net charge-offs to average loans decreased 11 basis points to 0.03 % from 0.14 % for the year ended december 31 , 2014. nonperforming loans to total loans decreased to 0.47 % at december 31 , 2015 from 0.89 % at december 31 , 2014. see - comparison of financial condition at december 31 , 2015 and december 31 , 2014 – delinquencies and nonperforming assets for more information on nonperforming loans in 2015 . 47 noninterest income . noninterest income increased $ 891,000 , or 20.4 % , to $ 5.3 million for the year ended december 31 , 2015 , as compared to $ 4.4 million for the year ended december 31 , 2014 as reflected below

