Bank segment | Bank segment Selected financial information American Savings Bank, F.S.B. Statements of Income Data Three months ended March 31 (in thousands) 2016 2015 Interest and dividend income Interest and fees on loans $ 48,437 $ 45,198 Interest and dividends on investment securities 5,017 3,051 Total interest and dividend income 53,454 48,249 Interest expense Interest on deposit liabilities 1,592 1,260 Interest on other borrowings 1,485 1,466 Total interest expense 3,077 2,726 Net interest income 50,377 45,523 Provision for loan losses 4,766 614 Net interest income after provision for loan losses 45,611 44,909 Noninterest income Fees from other financial services 5,499 5,355 Fee income on deposit liabilities 5,156 5,315 Fee income on other financial products 2,205 1,889 Bank-owned life insurance 998 983 Mortgage banking income 1,195 1,822 Other income, net 333 735 Total noninterest income 15,386 16,099 Noninterest expense Compensation and employee benefits 22,434 21,766 Occupancy 4,138 4,113 Data processing 3,172 3,116 Services 2,911 2,341 Equipment 1,663 1,701 Office supplies, printing and postage 1,365 1,483 Marketing 861 841 FDIC insurance 884 811 Other expense 3,975 4,205 Total noninterest expense 41,403 40,377 Income before income taxes 19,594 20,631 Income taxes 6,921 7,156 Net income $ 12,673 $ 13,475 American Savings Bank, F.S.B. Statements of Comprehensive Income Data Three months ended March 31 (in thousands) 2016 2015 Net income $ 12,673 $ 13,475 Other comprehensive income, net of taxes: Net unrealized gains on available-for-sale investment securities: Net unrealized gains on available-for-sale investment securities arising during the period, net of tax benefits of $4,905 and $2,278 for the respective periods 7,429 3,451 Retirement benefit plans: Less: amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, net of tax benefits of $137 and $259 for the respective periods 208 392 Other comprehensive income, net of taxes 7,637 3,843 Comprehensive income $ 20,310 $ 17,318 American Savings Bank, F.S.B. Balance Sheets Data (in thousands) March 31, 2016 December 31, 2015 Assets Cash and due from banks $ 110,200 $ 127,201 Interest-bearing deposits 120,428 93,680 Available-for-sale investment securities, at fair value 906,295 820,648 Stock in Federal Home Loan Bank, at cost 11,218 10,678 Loans receivable held for investment 4,642,276 4,615,819 Allowance for loan losses (52,326 ) (50,038 ) Net loans 4,589,950 4,565,781 Loans held for sale, at lower of cost or fair value 7,900 4,631 Other 312,333 309,946 Goodwill 82,190 82,190 Total assets $ 6,140,514 $ 6,014,755 Liabilities and shareholder’s equity Deposit liabilities—noninterest-bearing $ 1,541,402 $ 1,520,374 Deposit liabilities—interest-bearing 3,598,530 3,504,880 Other borrowings 329,081 328,582 Other 99,605 101,029 Total liabilities 5,568,618 5,454,865 Commitments and contingencies Common stock 1 1 Additional paid in capital 341,192 340,496 Retained earnings 240,337 236,664 Accumulated other comprehensive loss, net of tax benefits Net unrealized gains (losses) on securities $ 5,556 $ (1,872 ) Retirement benefit plans (15,190 ) (9,634 ) (15,399 ) (17,271 ) Total shareholder’s equity 571,896 559,890 Total liabilities and shareholder’s equity $ 6,140,514 $ 6,014,755 Other assets Bank-owned life insurance $ 138,732 $ 138,139 Premises and equipment, net 89,525 88,077 Prepaid expenses 5,329 3,550 Accrued interest receivable 15,723 15,192 Mortgage-servicing rights 8,857 8,884 Low-income housing equity investments 36,450 37,793 Real estate acquired in settlement of loans, net 797 1,030 Other 16,920 17,281 $ 312,333 $ 309,946 Other liabilities Accrued expenses $ 26,055 $ 30,705 Federal and state income taxes payable 22,324 13,448 Cashier’s checks 21,542 21,768 Advance payments by borrowers 6,403 10,311 Other 23,281 24,797 $ 99,605 $ 101,029 Bank-owned life insurance is life insurance purchased by ASB on the lives of certain key employees, with ASB as the beneficiary. The insurance is used to fund employee benefits through tax-free income from increases in the cash value of the policies and insurance proceeds paid to ASB upon an insured’s death. Other borrowings consisted of securities sold under agreements to repurchase and advances from the Federal Home Loan Bank (FHLB) of $229 million and $100 million , respectively, as of March 31, 2016 and $229 million and $100 million , respectively, as of December 31, 2015 . Available-for-sale investment securities. The major components of investment securities were as follows: Amortized cost Gross unrealized gains Gross unrealized losses Estimated fair value Gross unrealized losses Less than 12 months 12 months or longer (dollars in thousands) Number of issues Fair value Amount Number of issues Fair value Amount March 31, 2016 Available-for-sale U.S. Treasury and federal agency obligations $ 215,716 $ 3,078 $ (97 ) $ 218,697 — $ — $ — 2 $ 9,511 $ (97 ) Mortgage-related securities- FNMA, FHLMC and GNMA 681,354 7,852 (1,608 ) 687,598 9 67,217 (256 ) 21 100,991 (1,352 ) $ 897,070 $ 10,930 $ (1,705 ) $ 906,295 9 $ 67,217 $ (256 ) 23 $ 110,502 $ (1,449 ) December 31, 2015 Available-for-sale U.S. Treasury and federal agency obligations $ 213,234 $ 1,025 $ (1,300 ) $ 212,959 13 $ 83,053 $ (866 ) 3 $ 17,378 $ (434 ) Mortgage-related securities- FNMA, FHLMC and GNMA 610,522 3,564 (6,397 ) 607,689 38 305,785 (2,866 ) 25 125,817 (3,531 ) $ 823,756 $ 4,589 $ (7,697 ) $ 820,648 51 $ 388,838 $ (3,732 ) 28 $ 143,195 $ (3,965 ) ASB does not believe that the investment securities that were in an unrealized loss position at March 31, 2016, represent an other-than-temporary impairment. Total gross unrealized losses were primarily attributable to rising interest rates relative to when the investment securities were purchased and not due to the credit quality of the investment securities. The contractual cash flows of the investment securities are backed by the full faith and credit guaranty of the United States government or an agency of the government. ASB does not intend to sell the securities before the recovery of its amortized cost basis and there have been no adverse changes in the timing of the contractual cash flows for the securities. ASB did not recognize OTTI for the quarters ended March 31, 2016 and 2015. U.S. Treasury and federal agency obligations have contractual terms to maturity. Mortgage-related securities have contractual terms to maturity, but require periodic payments to reduce principal. In addition, expected maturities will differ from contractual maturities because borrowers have the right to prepay the underlying mortgages. The contractual maturities of available-for-sale investment securities were as follows: March 31, 2016 Amortized cost Fair value (in thousands) Due in one year or less $ — $ — Due after one year through five years 111,299 112,991 Due after five years through ten years 66,398 67,413 Due after ten years 38,019 38,293 215,716 218,697 Mortgage-related securities-FNMA,FHLMC and GNMA 681,354 687,598 Total available-for-sale securities $ 897,070 $ 906,295 Allowance for loan losses. The allowance for loan losses (balances and changes) and financing receivables were as follows: (in thousands) Residential 1-4 family Commercial real estate Home Residential land Commercial construction Residential construction Commercial loans Consumer loans Unallocated Total Three months ended March 31, 2016 Allowance for loan losses: Beginning balance $ 4,186 $ 11,342 $ 7,260 $ 1,671 $ 4,461 $ 13 $ 17,208 $ 3,897 $ — $ 50,038 Charge-offs (45 ) — — — — — (1,343 ) (1,570 ) — (2,958 ) Recoveries 17 — 15 103 — — 135 210 — 480 Provision 435 464 (103 ) (34 ) 1,703 (1 ) 991 1,311 — 4,766 Ending balance $ 4,593 $ 11,806 $ 7,172 $ 1,740 $ 6,164 $ 12 $ 16,991 $ 3,848 $ — $ 52,326 March 31, 2016 Ending balance: individually evaluated for impairment $ 1,653 $ 50 $ 629 $ 841 $ — $ — $ 3,643 $ 7 $ 6,823 Ending balance: collectively evaluated for impairment $ 2,940 $ 11,756 $ 6,543 $ 899 $ 6,164 $ 12 $ 13,348 $ 3,841 $ — $ 45,503 Financing Receivables: Ending balance $ 2,055,020 $ 703,661 $ 846,467 $ 18,940 $ 130,487 $ 16,241 $ 740,596 $ 136,244 $ 4,647,656 Ending balance: individually evaluated for impairment $ 22,585 $ 3,727 $ 3,820 $ 4,477 $ — $ — $ 26,099 $ 13 $ 60,721 Ending balance: collectively evaluated for impairment $ 2,032,435 $ 699,934 $ 842,647 $ 14,463 $ 130,487 $ 16,241 $ 714,497 $ 136,231 $ 4,586,935 Three months ended March 31, 2015 Allowance for loan losses: Beginning balance $ 4,662 $ 8,954 $ 6,982 $ 1,875 $ 5,471 $ 28 $ 14,017 $ 3,629 $ — $ 45,618 Charge-offs (156 ) — (3 ) — — — (46 ) (942 ) — (1,147 ) Recoveries 12 — 31 49 — — 341 277 — 710 Provision 403 2,274 (487 ) 362 (2,634 ) (7 ) 268 435 — 614 Ending balance $ 4,921 $ 11,228 $ 6,523 $ 2,286 $ 2,837 $ 21 $ 14,580 $ 3,399 $ — $ 45,795 December 31, 2015 Ending balance: individually evaluated for impairment $ 1,453 $ — $ 442 $ 891 $ — $ — $ 3,527 $ 7 $ 6,320 Ending balance: collectively evaluated for impairment $ 2,733 $ 11,342 $ 6,818 $ 780 $ 4,461 $ 13 $ 13,681 $ 3,890 $ — $ 43,718 Financing Receivables: Ending balance $ 2,069,665 $ 690,561 $ 846,294 $ 18,229 $ 100,796 $ 14,089 $ 758,659 $ 123,775 $ 4,622,068 Ending balance: individually evaluated for impairment $ 22,457 $ 1,188 $ 3,225 $ 5,683 $ — $ — $ 21,119 $ 13 $ 53,685 Ending balance: collectively evaluated for impairment $ 2,047,208 $ 689,373 $ 843,069 $ 12,546 $ 100,796 $ 14,089 $ 737,540 $ 123,762 $ 4,568,383 Credit quality . ASB performs an internal loan review and grading on an ongoing basis. The review provides management with periodic information as to the quality of the loan portfolio and effectiveness of its lending policies and procedures. The objectives of the loan review and grading procedures are to identify, in a timely manner, existing or emerging credit trends so that appropriate steps can be initiated to manage risk and avoid or minimize future losses. Loans subject to grading include commercial, commercial real estate and commercial construction loans. Each loan is assigned an Asset Quality Rating (AQR) reflecting the likelihood of repayment or orderly liquidation of that loan transaction pursuant to regulatory credit classifications: Pass, Special Mention, Substandard, Doubtful and Loss. The AQR is a function of the PD Model rating, the loss given default and possible non-model factors which impact the ultimate collectability of the loan such as character of the business owner/guarantor, interim period performance, litigation, tax liens and major changes in business and economic conditions. Pass exposures generally are well protected by the current net worth and paying capacity of the obligor or by the value of the asset or underlying collateral. Special Mention loans have potential weaknesses that, if left uncorrected, could jeopardize the liquidation of the debt. Substandard loans have well-defined weaknesses that jeopardize the liquidation of the debt and are characterized by the distinct possibility that the Bank may sustain some loss. An asset classified Doubtful has the weaknesses of those classified Substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. The credit risk profile by internally assigned grade for loans was as follows: March 31, 2016 December 31, 2015 (in thousands) Commercial real estate Commercial construction Commercial Commercial real estate Commercial construction Commercial Grade: Pass $ 655,307 $ 110,744 $ 679,370 $ 642,410 $ 86,991 $ 703,208 Special mention 16,096 — 12,662 7,710 13,805 7,029 Substandard 32,258 19,743 48,302 40,441 — 47,975 Doubtful — — 262 — — 447 Loss — — — — — — Total $ 703,661 $ 130,487 $ 740,596 $ 690,561 $ 100,796 $ 758,659 The credit risk profile based on payment activity for loans was as follows: (in thousands) 30-59 days past due 60-89 days past due Greater than 90 days Total past due Current Total financing receivables Recorded investment> 90 days and accruing March 31, 2016 Real estate: Residential 1-4 family $ 5,537 $ 2,215 $ 10,626 $ 18,378 $ 2,036,642 $ 2,055,020 $ — Commercial real estate — — — — 703,661 703,661 — Home equity line of credit 1,218 508 340 2,066 844,401 846,467 — Residential land — — 148 148 18,792 18,940 — Commercial construction — — — — 130,487 130,487 — Residential construction — — — — 16,241 16,241 — Commercial 391 984 308 1,683 738,913 740,596 — Consumer 1,249 579 446 2,274 133,970 136,244 — Total loans $ 8,395 $ 4,286 $ 11,868 $ 24,549 $ 4,623,107 $ 4,647,656 $ — December 31, 2015 Real estate: Residential 1-4 family $ 4,967 $ 3,289 $ 11,503 $ 19,759 $ 2,049,906 $ 2,069,665 $ — Commercial real estate — — — — 690,561 690,561 — Home equity line of credit 896 706 477 2,079 844,215 846,294 — Residential land — — 415 415 17,814 18,229 — Commercial construction — — — — 100,796 100,796 — Residential construction — — — — 14,089 14,089 — Commercial 125 223 878 1,226 757,433 758,659 — Consumer 1,383 593 644 2,620 121,155 123,775 — Total loans $ 7,371 $ 4,811 $ 13,917 $ 26,099 $ 4,595,969 $ 4,622,068 $ — The credit risk profile based on nonaccrual loans, accruing loans 90 days or more past due and TDR loans was as follows: (in thousands) March 31, 2016 December 31, 2015 Real estate: Residential 1-4 family $ 21,028 $ 20,554 Commercial real estate 3,727 1,188 Home equity line of credit 2,801 2,254 Residential land 698 970 Commercial construction — — Residential construction — — Commercial 17,862 20,174 Consumer 797 895 Total nonaccrual loans $ 46,913 $ 46,035 Real estate: Residential 1-4 family $ — $ — Commercial real estate — — Home equity line of credit — — Residential land — — Commercial construction — — Residential construction — — Commercial — — Consumer — — Total accruing loans 90 days or more past due $ — $ — Real estate: Residential 1-4 family $ 13,803 $ 13,962 Commercial real estate — — Home equity line of credit 2,643 2,467 Residential land 3,779 4,713 Commercial construction — — Residential construction — — Commercial 8,400 1,104 Consumer — — Total troubled debt restructured loans not included above $ 28,625 $ 22,246 The total carrying amount and the total unpaid principal balance of impaired loans were as follows: March 31, 2016 Three months ended March 31, 2016 (in thousands) Recorded investment Unpaid principal balance Related Allowance Average recorded investment Interest income recognized* With no related allowance recorded Real estate: Residential 1-4 family $ 10,502 $ 11,606 $ — $ 10,392 $ 51 Commercial real estate 1,166 1,429 — 1,173 — Home equity line of credit 913 1,159 — 849 — Residential land 1,489 2,185 — 1,590 16 Commercial construction — — — — — Residential construction — — — — — Commercial 5,079 5,831 — 4,999 6 Consumer — — — — — $ 19,149 $ 22,210 $ — $ 19,003 $ 73 With an allowance recorded Real estate: Residential 1-4 family $ 12,083 $ 12,286 $ 1,653 $ 12,018 $ 122 Commercial real estate 2,561 2,570 50 854 — Home equity line of credit 2,907 2,977 629 2,944 27 Residential land 2,988 2,988 841 3,378 67 Commercial construction — — — — — Residential construction — — — — — Commercial 21,020 21,714 3,643 16,970 30 Consumer 13 13 7 13 — $ 41,572 $ 42,548 $ 6,823 $ 36,177 $ 246 Total Real estate: Residential 1-4 family $ 22,585 $ 23,892 $ 1,653 $ 22,410 $ 173 Commercial real estate 3,727 3,999 50 2,027 — Home equity line of credit 3,820 4,136 629 3,793 27 Residential land 4,477 5,173 841 4,968 83 Commercial construction — — — — — Residential construction — — — — — Commercial 26,099 27,545 3,643 21,969 36 Consumer 13 13 7 13 — $ 60,721 $ 64,758 $ 6,823 $ 55,180 $ 319 December 31, 2015 Three months ended March 31, 2015 (in thousands) Recorded investment Unpaid principal balance Related allowance Average recorded investment Interest income recognized* With no related allowance recorded Real estate: Residential 1-4 family $ 10,596 $ 11,805 $ — $ 11,552 $ 89 Commercial real estate 1,188 1,436 — 555 — Home equity line of credit 707 948 — 400 1 Residential land 1,644 2,412 — 2,637 52 Commercial construction — — — — — Residential construction — — — — — Commercial 5,671 6,333 — 7,295 2 Consumer — — — — — $ 19,806 $ 22,934 $ — $ 22,439 $ 144 With an allowance recorded Real estate: Residential 1-4 family $ 11,861 $ 11,914 $ 1,453 $ 11,510 $ 126 Commercial real estate — — — 4,482 — Home equity line of credit 2,518 2,579 442 626 6 Residential land 4,039 4,117 891 5,189 83 Commercial construction — — — — — Residential construction — — — — — Commercial 15,448 16,073 3,527 4,982 50 Consumer 13 13 7 15 — $ 33,879 $ 34,696 $ 6,320 $ 26,804 $ 265 Total Real estate: Residential 1-4 family $ 22,457 $ 23,719 $ 1,453 $ 23,062 $ 215 Commercial real estate 1,188 1,436 — 5,037 — Home equity line of credit 3,225 3,527 442 1,026 7 Residential land 5,683 6,529 891 7,826 135 Commercial construction — — — — — Residential construction — — — — — Commercial 21,119 22,406 3,527 12,277 52 Consumer 13 13 7 15 — $ 53,685 $ 57,630 $ 6,320 $ 49,243 $ 409 * Since loan was classified as impaired. Troubled debt restructurings. A loan modification is deemed to be a troubled debt restructuring (TDR) when ASB grants a concession it would not otherwise consider were it not for the borrower’s financial difficulty. When a borrower experiencing financial difficulty fails to make a required payment on a loan or is in imminent default, ASB takes a number of steps to improve the collectability of the loan and maximize the likelihood of full repayment. At times, ASB may modify or restructure a loan to help a distressed borrower improve its financial position to eventually be able to fully repay the loan, provided the borrower has demonstrated both the willingness and the ability to fulfill the modified terms. TDR loans are considered an alternative to foreclosure or liquidation with the goal of minimizing losses to ASB and maximizing recovery. ASB may consider various types of concessions in granting a TDR including maturity date extensions, extended amortization of principal, temporary deferral of principal payments and temporary interest rate reductions. ASB rarely grants principal forgiveness in its TDR modifications. Residential loan modifications generally involve interest rate reduction, extending the amortization period, or capitalizing certain delinquent amounts owed not to exceed the original loan balance. Land loans at origination are typically structured as a three -year term, interest-only monthly payment with a balloon payment due at maturity. Land loan TDR modifications typically involve extending the maturity date up to five years and converting the payments from interest-only to principal and interest monthly, at the same or higher interest rate. Commercial loan modifications generally involve extensions of maturity dates, extending the amortization period and temporary deferral or reduction of principal payments. ASB generally does not reduce the interest rate on commercial loan TDR modifications. Occasionally, additional collateral and/or guaranties are obtained. All TDR loans are classified as impaired and are segregated and reviewed separately when assessing the adequacy of the allowance for loan losses based on the appropriate method of measuring impairment: (1) present value of expected future cash flows discounted at the loan’s effective original contractual rate, (2) fair value of collateral less cost to sell or (3) observable market price. The financial impact of the calculated impairment amount is an increase to the allowance associated with the modified loan. When available information confirms that specific loans or portions thereof are uncollectible (confirmed losses), these amounts are charged off against the allowance for loan losses. Loan modifications that occurred and the impact on the allowance for loan losses were as follows: Three months ended March 31, 2016 Number of contracts Outstanding recorded investment 1 Net increase in allowance (dollars in thousands) Pre-modification Post-modification (as of period end) Troubled debt restructurings Real estate: Residential 1-4 family 4 $ 1,097 $ 1,215 $ 161 Commercial real estate — — — — Home equity line of credit 10 669 669 74 Residential land — — — — Commercial construction — — — — Residential construction — — — — Commercial 3 16,200 16,200 525 Consumer — — — — 17 $ 17,966 $ 18,084 $ 760 Three months ended March 31, 2015 Number of contracts Outstanding recorded 1 Net increase in allowance (dollars in thousands) Pre-modification Post-modification (as of period end) Troubled debt restructurings Real estate: Residential 1-4 family 5 $ 877 $ 895 $ 47 Commercial real estate — — — — Home equity line of credit 9 429 429 55 Residential land — — — — Commercial construction — — — — Residential construction — — — — Commercial 1 92 92 — Consumer — — — — 15 $ 1,398 $ 1,416 $ 102 1 The reported balances include loans that became TDR during the period, and were fully paid-off, charged-off, or sold prior to period end. Loans modified in TDRs that experienced a payment default of 90 days or more during the three months ended March 31, 2016 and 2015, and for which the payment of default occurred within one year of the modification, were as follows: Three months ended March 31 2016 2015 (dollars in thousands) Number of contracts Recorded investment Number of contracts Recorded investment Troubled debt restructurings that subsequently defaulted Real estate: Residential 1-4 family 1 $ 488 — $ — Commercial real estate — — — — Home equity line of credit — — — — Residential land — — — — Commercial construction — — — — Residential construction — — — — Commercial — — — — Consumer — — — — 1 $ 488 — $ — If loans modified in a TDR subsequently default, ASB evaluates the loan for further impairment. Based on its evaluation, adjustments may be made in the allocation of the allowance or partial charge-offs may be taken to further write-down the carrying value of the loan. Commitments to lend additional funds to borrowers whose loan terms have been modified in a TDR totaled $2.3 million at March 31, 2016 . Mortgage servicing rights . In its mortgage banking business, ASB sells residential mortgage loans to government-sponsored entities and other parties, who may issue securities backed by pools of such loans. ASB retains no beneficial interests in these loans other than the servicing rights of certain loans sold. ASB received $40.4 million and $78.3 million of proceeds from the sale of residential mortgages for the quarters ended March 31, 2016 and 2015, respectively, and recognized gains on such sales of $1.2 million and $1.8 million for the quarters ended March 31, 2016 and 2015, respectively. Repurchased mortgage loans for the quarters ended March 31, 2016 and 2015 were nil and nil , respectively. The repurchase reserve was $0.1 million and nil for the quarters ended March 31, 2016 and 2015, respectively. Mortgage servicing fees, a component of other income, net, were $0.7 million and $0.9 million for the three months ended March 31, 2016 and 2015, respectively. Changes in the carrying value of mortgage servicing rights were as follows: (in thousands) Gross 1 Accumulated amortization 1 Valuation allowance Net March 31, 2016 $ 14,986 $ (6,129 ) $ — $ 8,857 December 31, 2015 14,531 (5,647 ) — 8,884 1 Reflects the impact of loans paid in full. Changes related to mortgage servicing rights were as follows: (in thousands) 2016 2015 Mortgage servicing rights Balance, January 1 $ 8,884 $ 11,749 Amount capitalized 455 906 Amortization (482 ) (647 ) Other-than-temporary impairment — (2 ) Carrying amount before valuation allowance, March 31 8,857 12,006 Valuation allowance for mortgage servicing rights Balance, January 1 — 209 Provision (recovery) — (166 ) Other-than-temporary impairment — (2 ) Balance, March 31 — 41 Net carrying value of mortgage servicing rights $ 8,857 $ 11,965 ASB capitalizes mortgage servicing rights acquired through either the purchase or origination of mortgage loans for sale with servicing rights retained. On a monthly basis, ASB compares the net carrying value of the mortgage servicing rights to its fair value to determine if there are any changes to the valuation allowance and/or other-than-temporary impairment for the mortgage servicing rights. ASB’s MSRs are stratified based on predominant risk characteristics of the underlying loans including loan type such as fixed-rate 15 and 30 year mortgages and note rate in bands of 50 to 100 basis points. For each stratum, fair value is calculated by discounting expected net income streams using discount rates that reflect industry pricing for similar assets. Changes in mortgage interest rates impact the value of ASB’s mortgage servicing rights. Rising interest rates typically result in slower prepayment speeds in the loans being serviced for others, which increases the value of mortgage servicing rights, whereas declining interest rates typically result in faster prepayment speeds which decrease the value of mortgage servicing rights and increase the amortization of the mortgage servicing rights. Expected net income streams are estimated based on industry assumptions regarding prepayment expectations and income and expenses associated with servicing residential mortgage loans for others. ASB uses a present value cash flow model using techniques described above to estimate the fair value of MSRs. Impairment is recognized through a valuation allowance for each stratum when the carrying amount exceeds fair value, with any associated provision recorded as a component of loan servicing fees included in other income, net in the consolidated statements of income. A direct write-down is recorded when the recoverability of the valuation allowance is deemed to be unrecoverable. Key assumptions used in estimating the fair value of ASB’s mortgage servicing rights used in the impairment analysis were as follows: (dollars in thousands) March 31, 2016 December 31, 2015 Unpaid principal balance $ 1,114,800 $ 1,097,314 Weighted average note rate 4.04 % 4.05 % Weighted average discount rate 9.6 % 9.6 % Weighted average prepayment speed 10.8 % 9.3 % The sensitivity analysis of fair value of MSR to hypothetical adverse changes of 25 and 50 basis points in certain key assumptions was as follows: (dollars in thousands) March 31, 2016 December 31, 2015 Prepayment rate: 25 basis points adverse rate change $ (537 ) $ (561 ) 50 basis points adverse rate change (1,008 ) (1,104 ) Discount rate: 25 basis points adverse rate change (99 ) (111 ) 50 basis points adverse rate change (196 ) (220 ) The effect of a variation in certain assumptions on fair value is calculated without changing any other assumptions. This analysis typically cannot be extrapolated because the relationship of a change in one key assumption to the changes in the fair value of MSRs typically is not linear. Other borrowings. Securities sold under agreements to repurchase are accounted for as financing transactions and the obligations to repurchase these securities are recorded as liabilities in the balance sheet. ASB pledges investment securities as collateral for securities sold under agreements to repurchase. All such agreements are subject to master netting arrangements, which provide for conditional right of set-off in case of default by either party; however, ASB presents securities sold under agreements to repurchase on a gross basis in the balance sheet. The following tables present information about the securities sold under agreements to repurchase, including the related collateral received from or pledged to counterparties: (in millions) Gross amount of recognized liabilities Gross amount offset in the Balance Sheet Net amount of liabilities presented in the Balance Sheet Repurchase agreements March 31, 2016 $229 $— $229 December 31, 2015 229 — 229 Gross amount not offset in the Balance Sheet (in millions) Liabilities presented in the Balance Sheet Financial instruments Cash collateral pledged March 31, 2016 Financial institution $ 50 $ 57 $ — Government entities 37 44 — Commercial account holders 142 161 — Total $ 229 $ 262 $ — December 31, 2015 Financial institution $ 50 $ 56 $ — Government entities 56 61 — Commercial account holders 123 144 — Total $ 229 $ 261 $ — The securities underlying the agreements to repurchase are book-entry securities and were delivered by appropriate entry into the counterparties’ accounts or into segregated tri-party custodial accounts at the FHLB. Securities sold under agreements to repurchase are accounted for as financing transactions and the obligations to repurchase these securities are recorded as liabilities in the consolidated balance sheets. The securities underlying the agreements to repurchase continue to be reflected in ASB’s asset accounts. Derivative financial instruments. ASB enters into interest rate lock commitments (IRLCs) with borrowers, and forward commitments to sell loans or to-be-announced mortgage-backed securities to investors to hedge against the inherent interest rate and pricing risk associated with selling loans. ASB enters into IRLCs for residential mortgage loans, which commit ASB to lend funds to a potential borrower at a specific interest rate and within a specified period of time. IRLCs that relate to the origination of mortgage loans that will be held for sale are considered derivative financial instruments under applicable accounting guidance. Outstanding IRLCs expose ASB to the risk that the price of the mortgage loans underlying the commitments may decline due to increases in mortgage interest rates from inception of the rate lock to the funding of the loan. The IRLCs are free-standing derivatives which are carried at fair value with changes recorded in mortgage banking income. ASB enters into forward commitments to hedge the interest rate risk for rate locked mortgage applications in process and closed mortgage loans held for sale. These commitments are primarily forward sales of to-be-announced mortgage backed securities. Generally, when mortgage loans are closed, the forward commitment is liquidated and replaced with a mandatory delivery forward sale of the mortgage to a secondary market investor. In some cases, a best-efforts forward sale agreement is utilized as the forward commitment. These commitments are free-standing derivatives which are carried at fair value with changes recorded in mortgage banking income. Changes in the fair value of IRLCs and forward commitments subsequent to inception are based on changes in the fair value of the underlying loan resulting from the fulfillment of the commitment and changes in the probability that the loan will fund within the terms of the commitment, which is affected primarily by changes in interest rates and the passage of time. The notional amount and fair value of ASB’s derivative financial instruments were as follows: March 31, 2016 December 31, 2015 (in thousands) Notional amount Fair value Notional amount Fair value Interest rate lock commitments $ 32,135 $ 655 $ 22,241 $ 384 Forward commitments 30,516 (192 ) 23,644 (29 ) ASB’s derivative financial instruments, their fair values, and balance sheet location were as follows: Derivative Financial Instruments Not Designated as Hedging Instruments 1 March 31, 2016 December 31, 2015 (in thousands) Asset derivatives Liability derivatives Asset derivatives Liability Interest rate lock commitments $ 655 $ — $ 384 $ — Forward commitments — 192 1 30 $ 655 $ 192 $ 385 $ 30 1 Asset derivatives are included in other assets and liability derivatives are included in other liabilities in the balance sheets. The following table presents ASB’s derivative financial instruments and the amount and location of the net gains or losses recognized in the statements of income: Derivative Financial Instruments Not Designated as Hedging Instruments Location of net gains (losses) recognized in the Statement of Income Three months ended March 31 (in thousands) 2016 2015 Interest rate lock commitments Mortgage banking income $ 271 $ 445 Forward commitments Mortgage banking income (163 ) (159 ) $ 108 $ 286 Low-Income Housing Tax Credit (LIHTC). ASB’s unfunded commitments to fund its LIHTC investment partnerships were $7.6 million and $10.1 million at March 31, 2016 and December 31, 2015 , respectively. These unfunded commitments were unconditional and legally binding and are recorded in other liabilities with a corresponding increase in other assets. Cash contributions and payments made on commitments to LIHTC investment partnerships are classified as operating activities in the Company’s |