Washington Federal (WAFD) 10-K 3 Dec 15 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2015	Dec. 02, 2015	Mar. 31, 2015
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Trading Symbol	WAFD
Entity Registrant Name	WASHINGTON FEDERAL INC
Entity Central Index Key	936,528
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		93,038,843
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 2,046,569,111

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
ASSETS
Cash and cash equivalents	$ 284,049	$ 781,843
Available-for-sale securities	2,380,563	3,049,442
Held-to-maturity securities	1,643,216	1,548,265
Loans receivable, net	9,170,634	8,324,798
Interest receivable	40,429	52,037
Premises and equipment, net	276,247	257,543
Real estate owned	61,098	83,962
FHLB & FRB stock	107,198	158,839
Bank owned life insurance	102,496	0
Intangible assets, including goodwill of $291,503	299,358	302,909
Federal and state income taxes, net	14,513	16,515
Other assets	188,523	179,888
Total assets	14,568,324	14,756,041
Customer accounts
Transaction deposit accounts	5,820,878	5,490,687
Time deposit accounts	4,810,825	5,226,241
Customer accounts	10,631,703	10,716,928
FHLB advances	1,830,000	1,930,000
Advance payments by borrowers for taxes and insurance	50,224	29,004
Accrued expenses and other liabilities	100,718	106,826
Total liabilities	12,612,645	12,782,758
Stockholders’ equity
Common stock, $1.00 par value, 300,000,000 shares authorized; 133,695,803 and 133,322,909 shares issued; 92,936,395 and 98,404,705 shares outstanding	133,696	133,323
Paid-in capital	1,643,712	1,638,211
Accumulated other comprehensive income, net of taxes	353	20,708
Treasury stock, at cost; 40,759,408 and 34,918,204 shares	(651,836)	(525,108)
Retained earnings	829,754	706,149
Total stockholders’ equity	1,955,679	1,973,283
Total liabilities and stockholders’ equity	$ 14,568,324	$ 14,756,041

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Statement of Financial Position [Abstract]
Goodwill	$ 291,503	$ 291,503
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	133,695,803	133,322,909
Common stock, shares outstanding (in shares)	92,936,395	98,404,705
Treasury stock, shares (in shares)	40,759,408	34,918,204

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
INTEREST INCOME
Loans	$ 437,002	$ 430,850	$ 454,915
Mortgage-backed securities	71,392	80,260	48,520
Investment securities and cash equivalents	22,159	22,587	12,856
Interest income	530,553	533,697	516,291
INTEREST EXPENSE
Customer accounts	51,054	58,524	67,903
FHLB advances and other borrowings	66,018	69,553	68,256
Interest expense	117,072	128,077	136,159
Net interest income	413,481	405,620	380,132
Provision (reversal) for loan losses	(11,162)	(15,401)	1,350
Net interest income after provision for loan losses	424,643	421,021	378,782
OTHER INCOME
Gain on sale of investments	9,641	0	0
Prepayment penalty on long-term debt	(10,554)	0	0
Loan fee income	8,788	7,706	8,585
Deposit fee income	22,459	14,306	5,015
Other income	10,089	8,647	8,333
Noninterest income	40,423	30,659	21,933
OTHER EXPENSE
Compensation and benefits	119,939	109,730	90,815
Occupancy	33,956	30,452	23,597
FDIC insurance premiums	7,916	11,009	12,214
Product delivery	22,325	14,973	4,414
Information technology	15,976	14,303	10,999
Other expense	24,739	23,542	22,201
Noninterest expense	224,851	204,009	164,240
Gain (loss) on real estate acquired through foreclosure, net	9,304	(2,743)	(1,859)
Income before income taxes	249,519	244,928	234,616
Income taxes
Current	86,477	75,784	71,969
Deferred	2,726	11,780	11,142
Income taxes	89,203	87,564	83,111
NET INCOME	$ 160,316	$ 157,364	$ 151,505
PER SHARE DATA
Basic earnings (in dollars per share)	$ 1.68	$ 1.56	$ 1.45
Diluted earnings (in dollars per share)	$ 1.67	$ 1.55	$ 1.45
Basic weighted average number of shares outstanding (in shares)	95,644,639	101,154,030	104,684,812
Diluted weighted average number of shares outstanding, including dilutive stock options (in shares)	96,053,959	101,590,351	104,837,470

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 160,316	$ 157,364	$ 151,505
Other comprehensive income (loss) net of tax:
Net unrealized gains (losses) on available-for-sale securities	(27,536)	22,924	(10,953)
Reclassification adjustment of net gains from sale of available-for-sale securities included in net income	9,641	0	0
Related tax benefit (expense)	6,577	(8,425)	4,025
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent	(11,318)	14,499	(6,928)
Net unrealized gain (loss) on long-term borrowing hedge	(14,287)	(268)	0
Related tax benefit (expense)	5,250	99	0
Derivatives qualifying as hedges, net of tax, portion attributable to parent	(9,037)	(169)	0
Other comprehensive income (loss)	(20,355)	14,330	(6,928)
Comprehensive income	$ 139,961	$ 171,694	$ 144,577

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (loss)	Treasury Stock
Balance, Beginning of period at Sep. 30, 2012	$ 1,899,752	$ 129,950	$ 1,586,295	$ 480,780	$ 13,306	$ (310,579)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	151,505			151,505
Other comprehensive income adjustment	(6,928)				(6,928)
Dividends paid and accrued on common stock	(37,835)			(37,835)
Compensation expense related to common stock options	473		473
Proceeds from exercise of common stock options	4,260	208	4,052
Proceeds from issuance of common stock	33,493	1,997	31,496
Tax benefit related to exercise of stock options	1		1
Restricted stock	3,152	418	2,734
Treasury stock	(110,238)					(110,238)
Balance, End of period at Sep. 30, 2013	1,937,635	132,573	1,625,051	594,450	6,378	(420,817)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	157,364			157,364
Other comprehensive income adjustment	14,330				14,330
Dividends paid and accrued on common stock	(45,665)			(45,665)
Compensation expense related to common stock options	324		324
Proceeds from exercise of common stock options	10,142	501	9,641
Proceeds from issuance of common stock	0	0	0
Tax benefit related to exercise of stock options	0		0
Restricted stock	3,444	249	3,195
Treasury stock	(104,291)					(104,291)
Balance, End of period at Sep. 30, 2014	1,973,283	133,323	1,638,211	706,149	20,708	(525,108)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	160,316			160,316
Other comprehensive income adjustment	(20,355)				(20,355)
Dividends paid and accrued on common stock	(36,711)			(36,711)
Compensation expense related to common stock options	231		231
Proceeds from exercise of common stock options	2,070	129	1,941
Restricted stock	3,573	244	3,329
Treasury stock	(126,728)					(126,728)
Balance, End of period at Sep. 30, 2015	$ 1,955,679	$ 133,696	$ 1,643,712	$ 829,754	$ 353	$ (651,836)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 160,316	$ 157,364	$ 151,505
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	21,217	17,347	15,774
Cash received from FDIC under loss share	720	2,502	13,421
Stock option compensation expense	232	324	473
Provision (reversal) for loan losses	(11,162)	(15,401)	1,350
(Gain) loss on investment securities and real estate held for sale, net	(28,528)	(2,510)	(8,011)
Loss on extinguishment of debt	10,554	0	0
Decrease (increase) in accrued interest receivable	11,608	(2,819)	(330)
Decrease (increase) in FDIC loss share receivable	1,795	(1,795)	(1,482)
Increase in cash surrender value of bank owned life insurance	(2,496)	0	0
Decrease (increase) in income taxes receivable	13,829	18,890	(17,462)
(Increase) decrease in other assets	(29,220)	(17,799)	36,350
(Decrease) increase in accrued expenses and other liabilities	(5,994)	17,612	(10,166)
Net cash provided by operating activities	142,871	173,715	181,422
CASH FLOWS FROM INVESTING ACTIVITIES
Net (loan originations) principal collections	(554,350)	(261,401)	343,771
Loans purchased	(279,936)	(218,544)	0
FHLB & FRB stock purchase	(4,067)	0	(23,981)
FHLB & FRB stock redeemed	55,708	14,017	5,894
Available-for-sale securities purchased	(315,114)	(1,280,477)	(889,595)
Principal payments and maturities of available-for-sale securities	721,951	609,395	275,726
Available-for-sale securities sold	246,826	0	43,198
Held-to-maturity securities purchased	(259,489)	0	(787,449)
Principal payments and maturities of held-to-maturity securities	159,947	103,617	331,022
Net cash received from acquisition	0	1,776,660	202,308
Proceeds from sales of real estate held for sale and investment	56,380	73,895	115,615
Proceeds from sales of covered REO	18,515	15,654	20,843
Purchase of bank owned life insurance	(100,000)
Premises and equipment purchased and REO improvements	(36,860)	(51,794)	(29,246)
Net cash provided (used) by investing activities	(290,489)	781,022	(391,894)
CASH FLOWS FROM FINANCING ACTIVITIES
Net (decrease) in customer accounts	(85,073)	(226,914)	(223,515)
Proceeds from long-term borrowings	100,000	0	50,000
Repayments of long-term borrowings	(210,554)	0	(22,470)
Proceeds from exercise of common stock options and related tax benefit	2,070	10,252	4,261
Dividends paid on common stock	(51,111)	(42,065)	(37,835)
Treasury stock purchased, net	(126,728)	(104,291)	(110,238)
Increase (decrease) in advance payments by borrowers for taxes and insurance	21,220	(13,439)	2,402
Net cash (used) by financing activities	(350,176)	(376,457)	(337,395)
Increase (decrease) in cash and cash equivalents	(497,794)	578,280	(547,867)
Cash and cash equivalents at beginning of period	781,843	203,563	751,430
Cash and cash equivalents at end of period	284,049	781,843	203,563
Non-cash investing activities
Non-covered real estate acquired through foreclosure	30,024	37,721	91,352
Covered real estate acquired through foreclosure	1,892	8,748	11,196
Cash paid during the period for
Interest	116,226	128,733	140,409
Income taxes	65,720	64,372	80,417
The following summarizes the non-cash activities related to acquisitions
Fair value of assets and intangibles acquired, including goodwill	0	80,242	607,193
Fair value of liabilities assumed	0	(1,856,902)	(776,009)
Net fair value of acquired assets (liabilities)	$ 0	$ (1,776,660)	$ (168,816)

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Washington Federal, Inc. is a Washington corporation headquartered in Seattle, Washington. The Company is a bank holding company that conducts its operations through a national bank subsidiary, Washington Federal, National Association. The Bank is principally engaged in the business of attracting deposits from the general public and investing these funds, together with borrowings and other funds, in one-to-four family residential real estate loans, multi-family real estate loans and commercial loans. As used throughout this document, the terms "Washington Federal" or the "Company" refer to Washington Federal, Inc. and its consolidated subsidiaries and the term "Bank" refers to the operating subsidiary Washington Federal, National Association. Nature of Operations. The Company is a bank holding company that conducts its operations through a national bank subsidiary. The Bank is principally engaged in the business of attracting deposits from the general public and investing these funds, together with borrowings and other funds, in one-to-four family residential real estate loans, multi-family real estate loans and commercial loans. The Bank conducts its activities through a network of 247 offices located in Washington, Oregon, Idaho, Utah, Arizona, Nevada, New Mexico, and Texas. Basis of Presentation. The consolidated financial statements included in this report have been prepared by Washington Federal. All intercompany transactions and accounts have been eliminated in consolidation. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect amounts reported in the financial statements. Actual results could differ from these estimates. The Company's fiscal year end is September 30th. All references to 2015 , 2014 and 2013 represent balances as of September 30, 2015 , September 30, 2014 and September 30, 2013 , or activity for the fiscal years then ended. References to net income in this document refer to net income available to common shareholders. Certain reclassification adjustments were made in 2015 to present the financial statements in a manner that is more meaningful to the users. Loans receivable and covered loans were consolidated into one line item on the Statement of Financial Condition. Real estate held for sale, real estate held for investment and covered real estate held for sale were consolidated into one line item on the Statement of Financial Condition. FDIC indemnification assets and other assets were consolidated into one line item on the Statement of Financial Condition. Reclassification of Other Expenses into Product Delivery and Information Technology line items have been made to the financial statements for years prior to September 30, 2014 to conform to current year classifications. Acquisitions. Certain Branches of Bank of America, National Association . During the 2014 fiscal year, the Bank acquired 74 branches from Bank of America, National Association. This included: effective as of the close of business on October 31, 2013, 11 branches located in New Mexico; effective as of the close of business on December 6, 2013, 40 branches located in Washington, Oregon, and Idaho; and effective as of the close of business on May 2, 2014, 23 branches located in Arizona and Nevada. The combined acquisitions provided $1.9 billion in deposit accounts, $13 million of loans, and $25 million in branch properties. The Bank paid a 1.99% premium on the total deposits and received $1.8 billion in cash from the transactions. The acquisition method of accounting was used to account for the acquisitions. The purchased assets and assumed liabilities are recorded at their respective acquisition date estimated fair values. The Bank recorded $11 million in core deposit intangible and $31 million in goodwill related to these transactions. The operating results of the Company include the operating results produced by the first 11 branches beginning November 1, 2013, for the additional 40 branches beginning December 7, 2013, and for the most recent 23 branches from May 3, 2014 forward. South Valley Bancorp, Inc. Effective November 1, 2012, the Bank acquired South Valley Bancorp, Inc. and South Valley's wholly owned subsidiary, South Valley Bank & Trust ("SVBT"), was merged into the Bank. The acquisition provided $361 million of net loans, $108 million of net covered loans, $736 million of deposit accounts, including $533 million in transaction deposit accounts and 24 branch locations in Central and Southern Oregon. Total consideration paid at closing was $44 million , including $34 million of the Company's stock and $10 million of cash resulting from the collection of certain earn-out assets. The operating results of the Company include the operating results produced by the acquired assets and assumed liabilities for the period November 1, 2012 forward. Cash and cash equivalents. Cash and cash equivalents include cash on hand, amounts due from banks, overnight investments and repurchase agreements with an initial maturity of three months or less. Investments and mortgage-backed securities. The Company accounts for investments and mortgage-backed securities in two categories: held-to-maturity and available-for-sale. Premiums and discounts on investments are deferred and recognized into income over the life of the asset using the effective interest method. Held-to-maturity securities are accounted for at amortized cost, but the Company must have both the positive intent and the ability to hold those securities to maturity. There are very limited circumstances under which securities in the held-to-maturity category can be sold without jeopardizing the cost basis of accounting for the remainder of the securities in this category. Available-for-sale securities are accounted for at fair value. Gains and losses realized on the sale of these securities are accounted for based on the specific identification method. Unrealized gains and losses for available-for-sale securities are excluded from earnings and reported net of the related tax effect in the accumulated other comprehensive income component of stockholders' equity. Realized gains and losses on securities sold as well as other than temporary impairment charges, if any, are shown on the Consolidated Statements of Operations under the Other Income heading. Management evaluates debt and equity securities for other than temporary impairment on a quarterly basis based on the securities' current credit quality, market interest rates, term to maturity and management's intent and ability to hold the securities until the net book value is recovered. Loans receivable. Loans that are performing in accordance with their contractual terms are carried at their amortized cost and expected interest is accrued. The Bank also receives fees for originating loans in addition to various fees and charges related to existing loans, which may include prepayment charges, late charges and assumption fees. When a borrower fails to make a required payment on a loan, the Bank attempts to cure the deficiency by contacting the borrower. Contact is made after a payment is 30 days past its grace period. In most cases, deficiencies are cured promptly. If the delinquency is not cured within 90 days, the Bank may institute appropriate action to foreclose on the property. If foreclosed, the property is sold at a public sale and may be purchased by the Bank. Restructured loans. The Bank will consider modifying the interest rates and terms of a loan if it determines that a modification is a better alternative to foreclosure. Most troubled debt restructured ("TDR") loans are accruing and performing loans where the borrower has proactively approached the Bank about modifications due to temporary financial difficulties. Each request is individually evaluated for merit and likelihood of success. The concession for these loans is typically a payment reduction through a rate reduction of 100 to 200 bps for a specific term, usually six to twelve months. Interest-only payments may also be approved during the modification period. Principal forgiveness is generally not an available option for restructured loans. Before granting approval to modify a loan in a TDR, the borrower’s ability to repay is evaluated, including: current income levels and debt to income ratio, borrower’s credit score, payment history of the loan, and updated evaluation of the secondary repayment source. The Bank also modifies some loans that are not classified as TDRs as the modification is due to a restructuring where the effective interest rate on the debt is reduced to reflect a decrease in market interest rates. Non accrual loans. Loans are placed on nonaccrual status when, in the judgment of management, the probability of collection of interest is deemed to be insufficient to warrant further accrual. When a loan is placed on nonaccrual status, previously accrued but unpaid interest is deducted from interest income. The Bank does not accrue interest on loans 90 days or more past due. If payment is made on a loan so that the loan becomes less than 90 days past due, and the Bank expects full collection of principal and interest, the loan is returned to full accrual status. Any interest ultimately collected is credited to income in the period of recovery. A loan is charged-off when the loss is estimable and it is confirmed that the borrower is not expected be able to meet contractual obligations. If a consumer loan is on non-accrual status before becoming a TDR it will stay on non-accrual status following restructuring until it has been performing for at least six months , at which point it may be moved to accrual status. If a loan is on accrual status before it becomes a TDR, and management concludes that full repayment is probable based on internal evaluation, it will remain on accrual status following restructuring. If the restructured consumer loan does not perform, it is placed on non-accrual status when it is 90 days delinquent. For commercial loans, six consecutive payments on newly restructured loan terms are required prior to returning the loan to accrual status. In some instances after the required six consecutive payments are made management will conclude that collection of the entire principal and interest due is still in doubt. In those instances, the loan will remain on non-accrual. Impaired loans. Impaired loans consist of loans receivable that are not expected to have their principal and interest repaid in accordance with their contractual terms. This includes TDRs that are on non-accrual status. Collateral dependent impaired loans are measured using the fair value of the collateral less selling costs. Non-collateral dependent loans are measured at the present value of expected future cash flows. Deferred fees and discounts on loans. Loan discounts and loan fees are deferred and recognized over the life of the loans using the effective interest method. Allowance for Loan Losses. The Bank maintains an allowance for loan losses to absorb losses inherent in the loan portfolio. The allowance is based on ongoing, quarterly assessments of the probable and estimable losses inherent in the loan portfolio. The Bank's general methodology for assessing the appropriateness of the allowance is to apply a loss percentage factor to the different loan types. The loss percentage factor is made up of two parts - the historical loss factor (“HLF”) and the qualitative loss factor (“QLF”). The HLF takes into account historical charge-offs by loan type. The Bank uses an average of historical loss rates for each loan category multiplied by a loss emergence period. This is the likely period of time during which a residential or commercial loan borrower experiencing financial difficulties might deplete their cash prior to becoming delinquent on their loan, plus the period of time that it takes the bank to work out the loans. The QLF are based on management's continuing evaluation of the pertinent factors underlying the quality of the loan portfolio, including changes in the size and composition of the loan portfolio, actual loan loss experience, current economic conditions, collateral values, geographic concentrations, seasoning of the loan portfolio, specific industry conditions, and the duration of the current business cycle. These factors are considered by loan type. Specific allowances are established for loans which are individually evaluated, in cases where management has identified significant conditions or circumstances related to a loan that management believes indicate the probability that a loss has been incurred. The Bank has also established a reserve for unfunded commitments. The recovery of the carrying value of loans is susceptible to future market conditions beyond the Bank's control, which may result in losses or recoveries differing from those estimated. Acquired credit impaired loans. Acquired credit impaired loans are accounted for under Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 310-30 when there is evidence of credit deterioration since origination and for which it is probable, at acquisition, that the Company would be unable to collect all contractually required payments. Interest income, through accretion of the difference between the carrying amount of the loans and the expected cash flows, are recognized on all acquired loans. Covered assets. Covered loans consist of single family loans acquired from Horizon Bank in 2010 and certain loans acquired from SVBT in fiscal 2013 that were originally recorded at their estimated fair value at the time acquired. Loans that were classified as non-performing loans by Horizon Bank and SVBT are no longer classified as non-performing because, at acquisition, the carrying value of these loans was adjusted to reflect fair value and are covered under the FDIC loss sharing agreements. Management believes that the book value reflects an amount that will ultimately be collected. Covered real estate held for sale represents the foreclosed properties that were originally Horizon Bank loans or certain SVBT loans. Covered real estate held for sale is carried at the estimated fair value of the repossessed real estate. The covered loans and covered real estate held for sale are collectively referred to as “covered assets." When FDIC loss share agreements expire, any remaining loans will be transferred to the non covered portfolio. FDIC indemnification asset. FDIC indemnification asset of $16,275,000 as of September 30, 2015 is the receivable recorded due to the guarantee provided by the FDIC on the covered assets. This asset declines due to collections from the FDIC on claims or the eventual expiration of the FDIC loss share agreements. The FDIC indemnification asset is included within other assets on the statement of financial condition. Client Derivatives. Interest rate swap agreements are provided to certain clients who desire to convert their obligations from variable to fixed interest rates. Under these agreements, the Bank enters into a variable-rate loan agreement with a customer in addition to a swap agreement, and then enters into a corresponding swap agreement with a third party in order to offset its exposure on the customer swap agreement. As the interest rate swap agreements with the customers and third parties are not designated as hedges under FASB ASC 815, Derivatives and Hedging, the instruments are marked to market in earnings. The change in fair value of the offsetting swaps are included in interest income and interest expense and there is no impact on net income. There is fee income earned on the swaps that is included in miscellaneous loan income. Long Term Borrowing Hedges. The Bank has entered into forward-starting interest rate swaps to convert a series of future short-term borrowings to fixed rate payments. These interest rate swaps qualify as cash flow hedging instruments under ASC 815 which provides for matching of the recognition of gains and losses of the interest rate swaps and the hedged items. Prior to the starting date, the change in the fair value of the interest rate swap is recorded in Other Comprehensive Income. Commercial Loan Hedge. The Bank has entered into an interest rate swap to hedge a long term fixed rate commercial loan. This interest rate swap qualifies as a fair value hedge under ASC 815 which provides for matching of the recognition of the gains and losses of the interest rate swap and the hedged item. Premises and equipment. Premises and equipment are stated at cost, less accumulated depreciation. Depreciation is computed on the straight-line method over the estimated useful lives of the respective assets. Expenditures are capitalized for betterments and major renewals. Charges for ordinary maintenance and repairs are expensed to operations as incurred. Real estate owned. Properties acquired in settlement of loans are recorded at fair value less selling costs. Subsequent accounting is recorded at lower of cost or fair value. These gains (losses) are shown on the real estate acquired through foreclosure line item. Intangible assets. Goodwill represents the excess of the cost of businesses acquired over the fair value of the net assets acquired. The core deposit intangibles are acquired assets that lack physical substance but can be distinguished from goodwill. Goodwill is evaluated for impairment on an annual basis. Other intangible assets are amortized over their estimated lives and are subject to impairment testing when events or circumstances change. If circumstances indicate that the carrying value of the assets may not be recoverable, an impairment charge could be recorded. No impairment of intangible assets has ever been identified. The Bank amortizes the core deposit intangibles over their estimated lives using an accelerated method. The balance of the Company's intangible assets was as follows: Goodwill Core Deposit Intangible Total (In thousands) Balance at September 30, 2013 $ 260,277 $ 4,041 $ 264,318 Additions 31,226 11,040 42,266 Amortization — (3,675 ) (3,675 ) Balance at September 30, 2014 291,503 11,406 302,909 Additions — — — Amortization — (3,551 ) (3,551 ) Balance at September 30, 2015 $ 291,503 $ 7,855 $ 299,358 The table below presents the estimated core deposit intangible asset amortization expense for the next five years: Year End Expense (In thousands) 2016 $ 2,314 2017 1,607 2018 1,208 2019 1,254 2020 1,254 Income taxes. Income taxes are accounted for using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, a deferred tax asset or liability is determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The provision for income taxes includes current and deferred income tax expense based on net income adjusted for temporary and permanent differences such as depreciation, interest on state and municipal securities, and affordable housing tax credits. Income tax related interest and penalties, if applicable, and amortization of affordable housing tax credit investments are recorded within income tax expense. Accounting for stock-based compensation. We recognize in the statement of operations the grant-date fair value of stock options and other equity-based forms of compensation issued to employees over the employees' requisite service period (generally the vesting period). The requisite service period may be subject to performance conditions. Stock options and restricted stock awards generally vest ratably over three to ten years and are recognized as expense over that same period of time. The exercise price of each option equals the market price of the Company's common stock on the date of the grant, and the maximum term is ten years. The fair value of each grant is estimated as of the grant date using the Black-Scholes option-pricing model or a Monte Carlo simulation pricing model. Expected volatility is based on the historical volatility of the price of the Company's common stock. The Company uses historical data to estimate option exercise and stock option forfeiture rates within the valuation model. The expected term of options granted is determined based on historical experience with similar options, giving consideration to the contractual terms and vesting schedules, and represents the period of time that options granted are expected to be outstanding. The expected dividend yield is based on dividend trends and the market value of the Company's common stock at the time of grant. The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant corresponding to the estimated expected term of the options granted. Stock options that were not dilutive but were outstanding as of September 30, 2015 , 2014 and 2013 were 94,054 , 90,846 and 435,825 , respectively. See Note L for additional information. Restricted stock unit grants and certain restricted stock awards are subject to performance-based and market-based vesting as well as other approved vesting conditions and cliff vest based on those conditions. Compensation expense is recognized over the service period to the extent restricted stock units are expected to vest. Use of estimates. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates reported in the financial statements include the allowance for loan losses, intangible assets, deferred taxes and contingent liabilities. Actual results could differ from these estimates. New accounting pronouncements. In January 2014, the FASB issued ASU 2014-04, Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40) - Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. The new guidance clarifies that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either: (a) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure; or (b) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. ASU 2014-04 is effective for annual and interim reporting periods within those annual periods, beginning after December 15, 2014. Adoption of the new guidance is not expected to have a significant impact on the Company's consolidated financial statements. In January 2014, the FASB issued ASU 2014-01, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. This new guidance permits reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). Those not electing the proportional amortization method would account for the investment using the equity method or cost method. This new guidance is effective on a retrospective basis beginning after December 15, 2014 with early adoption permitted. The Company adopted this ASU prospectively as of December 31, 2013 as the retrospective adjustments were not material. This adoption did not have a material impact on the Company's consolidated financial statements. In June 2014, the FASB issued ASU 2014-11, Transfers and Servicing (Topic 860) - Repurchase to Maturity Transactions, Repurchase Financings, and Disclosures. Under this new accounting guidance, repurchase-to-maturity transactions will be accounted for as secured borrowings rather than sales of an asset, and transfers of financial assets with contemporaneous repurchase financings will no longer be evaluated to determine whether they should be accounted for on a combined basis as forward contracts. The new guidance also prescribes additional disclosures particularly on the nature of collateral pledged in repurchase financings accounted for as secured borrowings. The new guidance is effective for the first interim or annual period beginning after December 31, 2014. This guidance did not have a material impact on the Company's consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. These amendments require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. These amendments are effective for interim and annual periods beginning after December 15, 2015. Early adoption is permitted. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In August 2015, the FASB issued ASU 2015-14, to defer the effective date of ASU 2014-09 , Revenue from Contracts with Customers (Topic 606). This new accounting guidance clarifies the principles for recognizing revenue from contracts with customers. The new accounting guidance, which does not apply to financial instruments, is effective on a retrospective basis beginning on January 1, 2018. The Company does not expect the new guidance to have a material impact on its consolidated financial statements. In August 2015, the FASB issued ASU 2015-16, Business Combinations (Topic 805): Simplifying the Accounting Measurement -Period Adjustments. To simplify the accounting for adjustments made to provisional amounts recognized in a business combination, the amendments eliminate the requirement to retrospectively account for those adjustments. These amendments are effective for interim and annual periods beginning after December 15, 2015. The amendments should be applied prospectively. The Company does not expect this guidance to have a material impact on its consolidated financial statements. Business segments. As the Company manages its business and operations on a consolidated basis, management has determined that there is one reportable business segment. Subsequent events. The Company has evaluated subsequent events for adjustment to or disclosure in the Company’s consolidated financial statements through the date of this report, and the Company has not identified any recordable or disclosable events, not otherwise reported in these consolidated financial statements or the notes thereto, except for the following: The Company paid its 131st consecutive quarterly cash dividend totaling $12,035,000 on November 20, 2015 to common stockholders of record on November 6, 2015.

Investment Securities

Investment Securities	12 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES September 30, 2015 Amortized Cost Gross Unrealized Fair Value Yield Gains Losses (In thousands) Available-for-sale securities U.S. government and agency securities due 1 to 5 years $ 105,065 $ 1,923 $ (274 ) $ 106,714 1.74 % 5 to 10 years 119,071 35 (1,247 ) 117,859 1.54 % Over 10 years 262,832 — (4,941 ) 257,891 1.23 % Equity Securities Within 1 year 500 17 — 517 1.80 % 1 to 5 years 99,922 1,513 — 101,435 1.90 % 5 to 10 years — — — — — % Corporate bonds due Within 1 year 24,787 191 — 24,978 0.53 % 1 to 5 years 311,435 1,190 (58 ) 312,567 0.88 % 5 to 10 years 100,000 876 (3,524 ) 97,352 1.47 % Over 10 years 69,950 953 — 70,903 3.00 % Municipal bonds due 1 to 5 years 2,285 8 — 2,293 1.23 % 5 to 10 years 1,303 7 — 1,310 2.05 % Over 10 years 20,382 3,138 — 23,520 6.45 % Mortgage-backed securities Agency pass-through certificates 1,144,787 18,222 (2,491 ) 1,160,518 2.48 % Other commercial MBS 103,131 85 (510 ) 102,706 1.51 % 2,365,450 28,158 (13,045 ) 2,380,563 1.97 % Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 1,643,216 10,516 (16,312 ) 1,637,420 3.19 % 1,643,216 10,516 (16,312 ) 1,637,420 3.19 % $ 4,008,666 $ 38,674 $ (29,357 ) $ 4,017,983 2.46 % September 30, 2014 Amortized Cost Gross Unrealized Fair Value Yield Gains Losses (In thousands) Available-for-sale securities U.S. government and agency securities due 1 to 5 years $ 171,154 $ 2,585 $ (748 ) $ 172,991 1.26 % 5 to 10 years 203,317 300 (102 ) 203,515 1.45 % Over 10 years 354,828 1,028 (419 ) 355,437 1.25 % Equity Securities Within 1 year 1 to 5 years 100,500 887 — 101,387 1.90 % 5 to 10 years — — — — % Corporate bonds due Within 1 year 15,000 75 — 15,075 1.00 % 1 to 5 years 302,540 2,372 — 304,912 0.71 % 5 to 10 years 138,201 1,789 (970 ) 139,020 1.43 % Over 10 years 50,000 — — 50,000 3.00 % Municipal bonds due 1 to 5 years — — — — — % 5 to 10 years — — — — — % Over 10 years 20,402 3,279 — 23,681 6.45 % Mortgage-backed securities Agency pass-through certificates 1,561,639 24,893 (2,024 ) 1,584,508 2.57 % Other commercial MBS 98,851 65 — 98,916 1.49 % 3,016,432 37,273 (4,263 ) 3,049,442 1.99 % Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 1,548,265 4,855 (53,902 ) 1,499,218 3.13 % 1,548,265 4,855 (53,902 ) 1,499,218 3.13 % $ 4,564,697 $ 42,128 $ (58,165 ) $ 4,548,660 2.38 % There were $246,826,000 of available-for-sale securities that were sold in 2015 , resulting in a gain of $9,641,000 . Substantially all mortgage-backed securities have contractual due dates that exceed twenty-five years. The following table shows the gross unrealized losses and fair value of securities at September 30, 2015 and September 30, 2014 , by length of time that individual securities in each category have been in a continuous loss position. The Bank had $1,297,408,000 securities in a continuous loss position for 12 or more months at September 30, 2015 , and $1,642,718,000 securities in a continuous loss position for 12 or more months at September 30, 2014 , which consisted of corporate bonds, U.S. government and agency securities, and mortgage-backed securities. Management believes that the declines in fair value of these investments are not an other than temporary impairment as these losses are due to a change in interest rates rather than any credit deterioration. The impairment is also deemed to be temporary because: 1) the Bank does not intend to sell the security, and 2) it is not more likely than not that it will be required to sell the security before recovery of the entire amortized cost basis of the security. As of September 30, 2015 Less than 12 months 12 months or more Total Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value (In thousands) Corporate Bonds $ (183 ) $ 72,862 $ (3,399 ) $ 46,601 $ (3,582 ) $ 119,463 U.S. agency securities (5,010 ) 336,243 (1,452 ) 57,344 (6,462 ) 393,587 Agency pass-through certificates (1,036 ) 169,541 (18,277 ) 1,193,463 (19,313 ) 1,363,004 $ (6,229 ) $ 578,646 $ (23,128 ) $ 1,297,408 $ (29,357 ) $ 1,876,054 As of September 30, 2014 Less than 12 months 12 months or more Total Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value (In thousands) Corporate Bonds $ (125 ) $ 24,875 $ (845 ) $ 24,155 $ (970 ) $ 49,030 U.S. agency securities (472 ) 316,578 (797 ) 109,354 (1,269 ) 425,932 Agency pass-through certificates (215 ) 19,212 (55,711 ) 1,509,209 (55,926 ) 1,528,421 $ (812 ) $ 360,665 $ (57,353 ) $ 1,642,718 $ (58,165 ) $ 2,003,383

Loans Receivable (including Cov

Loans Receivable (including Covered Loans)	12 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Loans Receivable (including Covered Loans)	Loans Receivable (including Covered Loans) September 30, 2015 September 30, 2014 (In thousands) (In thousands) Non-Acquired loans Single-family residential $ 5,651,845 57.6 % $ 5,560,203 62.6 % Construction - speculative 200,509 2.0 140,060 1.6 Construction - custom 396,307 4.0 385,824 4.3 Land - acquisition & development 94,208 1.0 77,832 0.9 Land - consumer lot loans 103,989 1.1 108,623 1.2 Multi-family 1,125,722 11.6 917,286 10.3 Commercial real estate 986,270 10.0 591,336 6.7 Commercial & industrial 612,836 6.2 379,226 4.3 HELOC 127,646 1.3 116,042 1.3 Consumer 194,655 2.0 132,590 1.5 Total non-acquired loans 9,493,987 96.8 % 8,409,022 94.7 % Acquired loans 166,293 1.6 184,188 2.0 Credit impaired acquired loans 87,081 0.9 76,507 0.8 Covered loans 75,909 0.7 213,203 2.5 Total gross loans 9,823,270 100.0 % 8,882,920 100.0 % Less: Allowance for probable losses 106,829 114,591 Loans in process 476,796 346,172 Discount on acquired loans 30,095 59,874 Deferred net origination fees 38,916 37,485 Total loan contra accounts 652,636 558,122 Net Loans $ 9,170,634 $ 8,324,798 The Company originates fixed and adjustable interest rate loans, which at September 30, 2015 consisted of the following: Fixed-Rate Adjustable-Rate Term To Maturity Book Value Term To Rate Adjustment Book Value (In thousands) (In thousands) Within 1 year $ 343,801 Less than 1 year $ 1,778,466 1 to 3 years 160,832 1 to 3 years 799,633 3 to 5 years 97,837 3 to 5 years 733,061 5 to 10 years 155,708 5 to 10 years 92,796 10 to 20 years 938,938 10 to 20 years — Over 20 years 4,722,198 Over 20 years — $ 6,419,314 $ 3,403,956 Gross loans by geographic concentration were as follows: September 30, 2015 Single - Multi- Land - Land - Construction - custom Construction - speculative Commercial Commercial Consumer HELOC Total (In thousands) Washington $ 2,905,256 $ 388,151 $ 54,467 $ 62,916 $ 232,244 $ 84,462 $ 638,974 $ 350,485 $ 74,649 $ 89,011 $ 4,880,615 Oregon 734,368 328,103 8,493 18,212 37,781 34,952 223,625 130,743 3,327 14,539 1,534,143 Arizona 154,858 411 — — — — 5,594 42,437 117,982 — 321,282 Other 312,471 34,502 4,235 8,098 17,107 13,634 7,566 11,183 165 6,204 415,165 Utah 579,743 233,240 4,573 9,227 39,443 8,542 116,157 40,754 297 18,619 1,050,595 Idaho 492,297 55,562 2,187 3,566 33,292 6,856 37,109 33,869 24 7,544 672,306 New Mexico 193,387 72,729 12,348 2,714 20,744 15,666 132,974 10,880 935 12,697 475,074 Texas 189,355 15,446 11,979 261 8,882 36,396 21,755 19,114 33 — 303,221 Nevada 139,047 1,293 — 1,819 6,816 — 2,797 18,115 69 913 170,869 $ 5,700,782 $ 1,129,437 $ 98,282 $ 106,813 $ 396,309 $ 200,508 $ 1,186,551 $ 657,580 $ 197,481 $ 149,527 $ 9,823,270 Percentage by geographic area September 30, 2015 Single - Multi- Land - Land - Construction - custom Construction - speculative Commercial Commercial Consumer HELOC Total As % of total gross loans Washington 29.4 % 4.0 % 0.6 % 0.6 % 2.4 % 0.9 % 6.5 % 3.6 % 0.8 % 0.9 % 49.7 % Oregon 7.5 3.3 0.1 0.2 0.4 0.4 2.3 1.3 — 0.1 15.6 Arizona 1.6 — — — — — 0.1 0.4 1.2 — 3.3 Other 3.2 0.4 — 0.1 0.2 0.1 0.1 0.1 — 0.1 4.3 Utah 5.9 2.4 — 0.1 0.4 0.1 1.2 0.4 — 0.2 10.7 Idaho 5.0 0.6 — — 0.3 0.1 0.4 0.3 — 0.1 6.8 New Mexico 2.0 0.7 0.1 — 0.2 0.2 1.4 0.1 — 0.1 4.8 Texas 1.9 0.2 0.1 — 0.1 0.4 0.2 0.2 — — 3.1 Nevada 1.4 — — — 0.1 — — 0.2 — — 1.7 57.9 % 11.6 % 0.9 % 1.0 % 4.1 % 2.2 % 12.2 % 6.6 % 2.0 % 1.5 % 100.0 % Percentage by geographic area as a % of each loan type September 30, 2015 Single - Multi- Land - Land - Construction - custom Construction - speculative Commercial Commercial Consumer HELOC As % of total gross loans Washington 51.0 % 34.3 % 55.4 % 59.0 % 58.7 % 42.1 % 54.0 % 53.1 % 37.8 % 59.6 % Oregon 12.9 29.1 8.6 17.1 9.5 17.4 18.8 19.9 1.7 9.7 Arizona 2.7 — — — — — 0.5 6.5 59.7 — Other 5.5 3.1 4.3 7.6 4.3 6.8 0.6 1.7 0.1 4.1 Utah 10.2 20.7 4.7 8.6 10.0 4.3 9.8 6.2 0.2 12.5 Idaho 8.6 4.9 2.2 3.3 8.4 3.4 3.1 5.2 — 5.0 New Mexico 3.4 6.4 12.6 2.5 5.2 7.8 11.2 1.7 0.5 8.5 Texas 3.3 1.4 12.2 0.2 2.2 18.2 1.8 2.9 — — Nevada 2.4 0.1 — 1.7 1.7 — 0.2 2.8 — 0.6 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % The Company has granted loans to officers and directors of the Company and related interests. These loans are made on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability. The aggregate dollar amount of these loans including undisbursed commitments was $55,965,000 and $60,278,000 at September 30, 2015 and 2014 , respectively. During 2015 , new loans on related party loans totaled $8,750,000 and repayments on related party loans totaled $13,063,000 . The following table provides additional information on impaired loans, loan commitments and loans serviced for others: September 30, 2015 September 30, 2014 (In thousands) Recorded investment in impaired loans $ 341,579 $ 435,185 Troubled Debt Restructuring included in impaired loans 302,713 374,743 Impaired loans with allocated reserves 2,323 196 Reserves on impaired loans 275 60 Average balance of impaired loans 333,815 403,138 Interest income from impaired loans 14,855 21,674 Outstanding fixed-rate origination commitments 230,869 198,504 Loans serviced for others 72,083 86,745 The following table sets forth information regarding non-accrual loans held by the Company: September 30, 2015 September 30, 2014 (In thousands) (In thousands) Non-accrual loans: Single-family residential $ 59,074 87.1 % $ 74,067 84.8 % Construction - speculative 754 1.1 1,477 1.7 Construction - custom 732 1.1 — — Land - acquisition & development — — 811 0.9 Land - consumer lot loans 1,273 1.9 2,637 3.0 Multi-family 2,558 3.8 1,742 2.0 Commercial real estate 2,176 3.2 5,106 5.8 Commercial & industrial — 7 — HELOC 563 0.8 795 0.9 Consumer 680 1.0 789 0.9 Total non-accrual loans $ 67,810 100 % $ 87,431 100 % The following tables provide an analysis of the age of loans in past due status: September 30, 2015 Amount of Loans Days Delinquent Based on $ Amount of Loans % based on $ Type of Loan Net of LIP & Chg.-Offs Current 30 60 90 Total (In thousands) Non-acquired loans Single-Family Residential $ 5,655,928 $ 5,590,673 $ 17,305 $ 7,757 $ 40,193 $ 65,255 1.15 % Construction - Speculative 130,121 130,121 — — — — — Construction - Custom 205,692 204,168 791 270 463 1,524 0.74 Land - Acquisition & Development 75,661 74,737 406 — 518 924 1.22 Land - Consumer Lot Loans 104,494 102,045 689 399 1,361 2,449 2.34 Multi-Family 1,068,038 1,065,667 259 454 1,658 2,371 0.22 Commercial Real Estate 893,072 892,180 131 — 761 892 0.10 Commercial & Industrial 617,545 616,602 93 27 823 943 0.15 HELOC 127,648 127,196 174 27 251 452 0.35 Consumer 194,977 194,259 493 170 55 718 0.37 9,073,176 8,997,648 20,341 9,104 46,083 75,528 0.83 Acquired loans 57,682 56,559 356 — 767 1,123 1.95 Credit impaired acquired loans 139,726 138,940 243 4 539 786 0.56 Covered loans 75,890 70,729 272 90 4,799 5,161 6.80 Total Loans $ 9,346,474 $ 9,263,876 $ 21,212 $ 9,198 $ 52,188 $ 82,598 0.88 % Delinquency % 99.12% 0.23% 0.10% 0.56% 0.88% The percentage of total delinquent loans improved from 1.44% as of September 30, 2014 to 0.88% as of September 30, 2015 . Most loans restructured in troubled debt restructurings ("TDRs") are accruing and performing loans where the borrower has proactively approached the Bank about modifications due to temporary financial difficulties. Each request is individually evaluated for merit and likelihood of success. The concession for these loans is typically a payment reduction through a rate reduction of 100 to 200 bps for a specific term, usually six to twelve months . Interest-only payments may also be approved during the modification period. Principal forgiveness is not an available option for restructured loans. As of September 30, 2015 , the outstanding balance of TDR's was $302,713,000 as compared to $374,743,000 as of September 30, 2014 . Single-family residential loans comprised 86% of restructured loans which is the same as at the prior year end. The Bank reserves for restructured loans within its allowance for loan loss methodology by taking into account the following performance indicators: 1) time since modification, 2) current payment status and 3) geographic area. The following tables provides information related troubled debt restructured: September 30, 2015 September 30, 2014 Pre-Modification Post-Modification Pre-Modification Post-Modification Outstanding Outstanding Outstanding Outstanding Number of Recorded Recorded Number of Recorded Recorded Troubled Debt Restructurings: Contracts Investment Investment Contracts Investment Investment (In thousands) (In thousands) Single-Family Residential 62 $ 13,378 $ 13,378 241 $ 52,900 $ 52,900 Construction - Speculative 2 701 701 — — — Construction - Custom — — — — — — Land - Acquisition & Development — — — 3 631 631 Land - Consumer Lot Loans 9 1,546 1,546 13 2,315 2,315 Multi-Family 3 — — 2 1,196 1,196 Commercial Real Estate 1 3,175 3,175 3 2,177 2,177 Commercial & Industrial 1 — — — — — HELOC — 50 50 2 549 549 Consumer — 80 80 3 35 35 78 $ 18,930 $ 18,930 267 $ 59,803 $ 59,803 September 30, 2015 September 30, 2014 Number of Recorded Number of Recorded Troubled Debt Restructurings That Subsequently Defaulted: Contracts Investment Contracts Investment (In thousands) (In thousands) Single-Family Residential 18 $ 2,917 38 $ 7,427 Construction - Speculative — — — — Construction - Custom — — — — Land - Acquisition & Development — — — — Land - Consumer Lot Loans 2 301 8 969 Multi-Family — — — — Commercial Real Estate — — — — Commercial & Industrial — — — — HELOC — — — — Consumer — — — — 20 $ 3,218 46 $ 8,396 The excess of cash flows expected to be collected over the initial fair value of acquired impaired loans is referred to as the accretable yield and this amount is accreted into interest income over the estimated life of the acquired loans using the effective yield method. Other adjustments to the accretable yield include changes in the estimated remaining life of the acquired loans, changes in expected cash flows and changes in the indices for acquired loans with variable interest rates. The following table shows the changes in accretable yield for acquired impaired loans and acquired non-impaired loans including covered loans for the years ended September 30, 2015 and 2014 : September 30, 2015 September 30, 2014 Acquired Impaired Acquired Non-impaired Acquired Impaired Acquired Non-impaired Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans (In thousands) (In thousands) Beginning balance $ 97,125 $ 135,826 $ 14,513 $ 275,862 $ 115,513 $ 207,809 $ 22,240 $ 403,229 Additions — — — — — — — — Net reclassification from nonaccretable 6,307 — 346 — 17,486 (2,069 ) — — Accretion (30,727 ) 30,727 (7,655 ) 7,655 (35,874 ) 35,874 (7,727 ) 7,727 Transfers to REO — (2,975 ) — (150 ) — (10,131 ) — (4,710 ) Payments received, net — (52,278 ) — (96,287 ) — (95,657 ) — (130,384 ) Ending Balance $ 72,705 $ 111,300 $ 7,204 $ 187,080 $ 97,125 $ 135,826 $ 14,513 $ 275,862 Additionally, there were $9.9 million in fair value of loans acquired during fiscal 2013 as part of the South Valley Bank acquisition for which it was probable at acquisition that all contractually required payments would not be collected. The timing and amount of future cash flows cannot be reasonably estimated; therefore, these loan are accounted for on a cash basis. At September 30, 2015 and September 30, 2014 , none of the acquired impaired or non-impaired loans were classified as non-performing assets. Therefore, interest income, through accretion of the difference between the carrying amount of the loans and the expected cash flows, was recognized on all acquired loans. The FDIC loss share coverage for the acquired commercial loans from the former Horizon Bank expired after March 31, 2015. These loans were transferred to non-covered loans receivable. The FDIC loss share coverage for the acquired commercial loans from the former Home Valley Bank expired as of September 30, 2015 with final reporting as of October 31, 2015. Recoveries to the extent that claims were made will continue to be shared for three years. The FDIC loss share coverage for single family residential loans will continue to another five years. The outstanding principal balance of covered loans was $75,909,000 and $ 213,203,000 as of September 30, 2015 and September 30, 2014 , respectively. The discount balance related to the covered loans was $2,738,000 and $34,483,000 as of September 30, 2015 and September 30, 2014 , respectively. The following table shows the year to date activity for the FDIC indemnification asset: September 30, September 30, 2014 (In thousands) Balance at beginning of period $ 36,860 $ 64,615 Additions (1,795 ) 1,795 Payments received (720 ) (2,502 ) Amortization (18,588 ) (27,850 ) Accretion 518 802 Balance at end of period $ 16,275 $ 36,860

Allowance for Losses on Loans

Allowance for Losses on Loans	12 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Allowance for Losses on Loans	Allowance for Losses on Loans The following table summarizes the activity in the allowance for loan losses for the twelve months ended September 30, 2015 and 2014 : September 30, 2015 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 62,763 $ (5,524 ) $ 13,403 $ (23,295 ) $ 47,347 Construction - speculative 6,742 (388 ) 120 206 6,680 Construction - custom 1,695 — — (705 ) 990 Land - acquisition & development 5,592 (38 ) 207 20 5,781 Land - consumer lot loans 3,077 (459 ) 221 107 2,946 Multi-family 4,248 — 220 836 5,304 Commercial real estate 7,548 (1,711 ) 735 2,388 8,960 Commercial & industrial 16,527 (3,354 ) 1,374 10,433 24,980 HELOC 928 (66 ) 2 38 902 Consumer 3,227 (3,060 ) 3,688 (916 ) 2,939 Covered loans 2,244 — — (2,244 ) — $ 114,591 $ (14,600 ) $ 19,970 $ (13,132 ) $ 106,829 September 30, 2014 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 64,184 $ (8,529 ) $ 17,684 $ (10,576 ) $ 62,763 Construction - speculative 8,407 (949 ) 97 (813 ) 6,742 Construction - custom 882 — — 813 1,695 Land - acquisition & development 9,165 (541 ) 3,071 (6,103 ) 5,592 Land - consumer lot loans 3,552 (658 ) 22 161 3,077 Multi-family 3,816 — — 432 4,248 Commercial real estate 5,595 (105 ) 33 2,025 7,548 Commercial & industrial 16,614 (826 ) 5,043 (4,304 ) 16,527 HELOC 1,002 (48 ) — (26 ) 928 Consumer 3,524 (3,443 ) 3,513 (367 ) 3,227 Covered loans — — — 2,244 2,244 $ 116,741 $ (15,099 ) $ 29,463 $ (16,514 ) $ 114,591 The Company recorded a reversal of $11,162,000 of provision for loan losses during the fiscal year ended September 30, 2015 , while a $15,401,000 reversal of provision was recorded for the year ended September 30, 2014 . The credit quality of the portfolio has been improving significantly and economic conditions are more stable. Non-performing assets (“NPAs”) amounted to $ 128,577,000 , or 0.88% , of total assets at September 30, 2015 , compared to $147,311,000 , or 1.00% , of total assets one year ago. Acquired loans, including covered loans are not classified as non-performing loans because, at acquisition, the carrying value of these loans was adjusted to reflect fair value. For the year ended September 30, 2015 , $30,778,000 in acquired loans were subject to the general allowance as the discount related to these balances was not sufficient to absorb potential losses. There is no allowance for covered loans as of September 30, 2015 compared to an allowance of $2,244,000 as of September 30, 2014. The allowance for credit losses related to the covered loans as of September 30, 2014 resulted from decreased expectations of future cash flows due to increased credit losses for certain acquired loan pools. The allowance allocation was reversed during the current fiscal year due to improvements in the expected future cash flows of certain acquired loan pools. Non-accrual loans decreased from $ 87,431,000 at September 30, 2014 , to $67,810,000 at September 30, 2015 . The Company had net recoveries of $5,370,000 for the twelve months ended September 30, 2015 , compared with $ 14,365,000 of net recoveries for the same period one year ago. A loan is charged-off when the loss is estimable and it is confirmed that the borrower is not expected to be able to meet its contractual obligations. At September 30, 2015 , $106,554,000 of the allowance was calculated under the formulas contained in our general allowance methodology and the remaining $275,000 was made up of specific reserves on loans that were deemed to be impaired. For the year ending September 30, 2014 , $112,287,000 of the allowance was calculated under the formulas contained in our general allowance methodology, $60,000 was made up of specific reserves on loans that were deemed to be impaired and the remaining $2,244,000 was related to covered loans. The following tables show a summary of loans collectively and individually evaluated for impairment and the related allocation of general and specific reserves as of September 30, 2015 and 2014 : September 30, 2015 Loans Collectively Evaluated for Impairment Loans Individually Evaluated for Impairment General Reserve Allocation Gross Loans Subject to General Reserve (1) Ratio Specific Reserve Allocation Gross Loans Subject to Specific Reserve (1) Ratio (In thousands) (In thousands) Single-family residential $ 47,073 $ 5,595,752 0.8 % $ 275 $ 51,718 0.5 % Construction - speculative 6,680 124,679 5.4 — 5,441 — Construction - custom 990 205,692 0.5 — — — Land - acquisition & development 5,781 72,602 8.0 — 2,198 — Land - consumer lot loans 2,946 93,103 3.2 — 10,824 — Multi-family 5,304 1,062,194 0.5 — 5,348 — Commercial real estate 8,960 844,691 1.1 — 8,826 — Commercial & industrial 24,980 643,577 3.9 — — — HELOC 902 126,594 0.7 — 1,072 — Consumer 2,938 194,569 1.5 — 86 — $ 106,554 $ 8,963,453 1.2 % $ 275 $ 85,513 0.3 % ___________________ (1) Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans September 30, 2014 Loans Collectively Evaluated for Impairment Loans Individually Evaluated for Impairment General Reserve Allocation Gross Loans Subject to General Reserve (1) Ratio Specific Reserve Allocation Gross Loans Subject to Specific Reserve (1) Ratio (In thousands) (In thousands) Single-family residential $ 62,067 $ 5,487,331 1.1 % $ — $ 72,869 — % Construction - speculative 6,682 130,901 5.5 60 9,159 0.7 Construction - custom 1,695 385,464 0.5 — 360 — Land - acquisition & development 5,592 73,999 7.6 — 3,833 — Land - consumer lot loans 3,077 95,684 3.2 — 12,939 — Multi-family 4,248 911,162 0.5 — 6,124 — Commercial real estate 7,548 563,534 1.4 — 27,802 — Commercial & industrial 17,223 421,816 4.6 — — — HELOC 928 114,393 0.9 — 1,650 — Consumer 3,227 132,590 2.4 — — — $ 112,287 $ 8,316,874 1.4 % $ 60 $ 134,736 — % ___________________ (1) Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans The Company has an asset quality review function that analyzes the loan portfolio and reports the results of the review to the Board of Directors on a quarterly basis. The single-family residential, HELOC and consumer portfolios are evaluated based on their performance as a pool of loans, since no single loan is individually significant or judged by its risk rating, size or potential risk of loss. The construction, land, multi-family, commercial real estate and commercial and industrial loans are risk rated on a loan by loan basis to determine the relative risk inherent in specific borrowers or loans. Based on that risk rating, the loans are assigned a grade and classified as follows: • Pass – the credit does not meet one of the definitions defined below. • Special mention – A special mention credit is considered to be currently protected from loss but is potentially weak. No loss of principal or interest is foreseen; however, proper supervision and Management attention is required to deter further deterioration in the credit. Assets in this category constitute some undue and unwarranted credit risk but not to the point of justifying a risk rating of substandard. The credit risk may be relatively minor yet constitutes an unwarranted risk in light of the circumstances surrounding a specific asset. • Substandard – A substandard credit is an unacceptable credit. Additionally, repayment in the normal course is in jeopardy due to the existence of one or more well defined weaknesses. In these situations, loss of principal is likely if the weakness is not corrected. A substandard asset is inadequately protected by the current sound worth and paying capacity of the borrower or of the collateral pledged, if any. Assets so classified will have a well defined weakness or weaknesses that jeopardize the liquidation of the debt. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual assets risk rated substandard. • Doubtful – A credit classified doubtful has all the weaknesses inherent in one classified substandard with the added characteristic that the weakness makes collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The probability of loss is high, but because of certain important and reasonably specific pending factors that may work to the advantage and strengthening of the asset, its classification as an estimated loss is deferred until its more exact status may be determined. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral, and refinancing plans. • Loss – Credits classified loss are considered uncollectible and of such little value that their continuance as a bankable asset is not warranted. This classification does not mean that the asset has absolutely no recovery or salvage value, but rather it is not practical or desirable to defer writing off this asset even though partial recovery may be affected in the future. Losses should be taken in the period in which they are identified as uncollectible. Partial charge-off versus full charge-off may be taken if the collateral offers some identifiable protection. The following tables provide information on loans based on credit quality indicators (defined above) as of September 30, 2015 and 2014 : September 30, 2015 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,558,700 $ — $ 93,145 $ — $ — $ 5,651,845 Construction - speculative 197,935 — 2,574 — — 200,509 Construction - custom 396,307 — — — — 396,307 Land - acquisition & development 89,656 — 4,552 — — 94,208 Land - consumer lot loans 103,569 — 420 — — 103,989 Multi-family 1,118,673 865 6,184 — — 1,125,722 Commercial real estate 971,510 4,360 10,400 — — 986,270 Commercial & industrial 575,034 1,496 36,306 — — 612,836 HELOC 127,398 — 248 — — 127,646 Consumer 194,451 — 204 — — 194,655 Total Non-acquired loans 9,333,233 6,721 154,033 — — 9,493,987 Acquired loans $ 149,891 — 16,402 — — 166,293 Credit impaired acquired loans 61,019 — 26,062 — — 87,081 Covered loans $ 61,776 $ — $ 14,133 $ — $ — 75,909 Total gross loans $ 9,605,919 $ 6,721 $ 210,630 $ — $ — $ 9,823,270 Total grade as a % of total gross loans 97.8 % 0.1 % 2.1 % — % — % September 30, 2014 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,426,895 $ 2,793 $ 130,515 $ — $ — $ 5,560,203 Construction - speculative 134,950 — 5,110 — — 140,060 Construction - custom 385,824 — — — — 385,824 Land - acquisition & development 71,692 — 6,140 — — 77,832 Land - consumer lot loans 108,013 — 610 — — 108,623 Multi-family 912,728 — 4,558 — — 917,286 Commercial real estate 557,914 1,971 31,451 — — 591,336 Commercial & industrial 359,221 14,740 5,265 — — 379,226 HELOC 115,794 — 248 — — 116,042 Consumer 132,349 — 241 — — 132,590 Total Non-acquired loans 8,205,380 19,504 184,138 — — 8,409,022 Acquired loans 156,954 16,213 10,963 58 — 184,188 Credit impaired acquired loans 61,332 2,143 13,032 — — 76,507 Covered loans $ 135,134 $ 815 $ 76,729 $ 525 — 213,203 Total gross loans $ 8,558,800 $ 38,675 $ 284,862 $ 583 $ — $ 8,882,920 Total grade as a % of total gross loans 96.4 % 0.4 % 3.2 % — % — % The following tables provide information on non-acquired loans based on payment activity as of September 30, 2015 and 2014 : September 30, 2015 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) (In thousands) Single-family residential $ 5,592,771 99.0 % $ 59,074 1.0 % Construction - speculative 199,755 99.6 754 0.4 Construction - custom 395,575 99.8 732 0.2 Land - acquisition & development 94,208 100.0 — — Land - consumer lot loans 102,716 98.8 1,273 1.2 Multi-family 1,123,165 99.8 2,558 0.2 Commercial real estate 984,093 99.8 2,176 0.2 Commercial & industrial 612,836 100.0 — — HELOC 127,083 99.6 563 0.4 Consumer 193,975 99.7 680 0.3 $ 9,426,177 99.3 % $ 67,810 0.7 % September 30, 2014 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) (In thousands) Single-family residential $ 5,486,136 98.7 % $ 74,067 1.3 % Construction - speculative 138,583 98.9 1,477 1.1 Construction - custom 385,824 100.0 — — Land - acquisition & development 77,021 99.0 811 1.0 Land - consumer lot loans 105,986 97.6 2,637 2.4 Multi-family 915,544 99.8 1,742 0.2 Commercial real estate 586,230 99.1 5,106 0.9 Commercial & industrial 379,219 100.0 7 — HELOC 115,247 99.3 795 0.7 Consumer 131,801 99.4 789 0.6 $ 8,321,591 99.0 % $ 87,431 1.0 % The following tables provide information on impaired loans based on loan types as of September 30, 2015 and 2014 : September 30, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) With no related allowance recorded: Single-family residential $ 17,250 $ 19,644 $ — $ 14,069 Construction - speculative 453 2,151 — 471 Construction - custom 554 554 — 182 Land - acquisition & development 2,570 9,426 — 926 Land - consumer lot loans 727 814 — 544 Multi-family 3,770 7,054 — 1,545 Commercial real estate 9,427 15,620 — 8,130 Commercial & industrial 2,955 13,066 — 2,681 HELOC 683 1,532 — 536 Consumer 477 703 — 390 38,866 70,564 — 29,474 With an allowance recorded: Single-family residential 259,461 263,268 6,678 260,028 Construction - speculative 4,988 5,778 — 5,432 Construction - custom — — — — Land - acquisition & development 2,486 3,426 — 3,478 Land - consumer lot loans 11,289 11,554 — 11,324 Multi-family 3,823 3,823 — 3,732 Commercial real estate 19,124 21,078 — 18,886 Commercial & industrial — — — — HELOC 1,443 1,443 — 1,359 Consumer 99 289 — 102 302,713 310,659 6,678 (1) 304,341 Total: Single-family residential 276,711 282,912 6,678 274,097 Construction - speculative 5,441 7,929 — 5,903 Construction - custom 554 554 — 182 Land - acquisition & development 5,056 12,852 — 4,404 Land - consumer lot loans 12,016 12,368 — 11,868 Multi-family 7,593 10,877 — 5,277 Commercial real estate 28,551 36,698 — 27,016 Commercial & industrial 2,955 13,066 — 2,681 HELOC 2,126 2,975 — 1,895 Consumer 576 992 — 492 $ 341,579 $ 381,223 $ 6,678 (1) $ 333,815 ____________________ (1) Includes $275,000 of specific reserves and $6,403,000 included in the general reserves. September 30, 2014 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) With no related allowance recorded: Single-family residential $ 24,044 $ 26,628 $ — $ 16,843 Construction - speculative 1,603 2,173 — 1,804 Construction - custom — — — — Land - acquisition & development 837 2,325 — 1,038 Land - consumer lot loans 974 1,072 — 713 Multi-family 1,111 1,111 — 327 Commercial real estate 13,234 20,085 — 11,720 Commercial & industrial 3,195 17,166 — 3,900 HELOC 1,019 1,730 — 612 Consumer 663 833 — 517 46,680 73,123 — 37,474 With an allowance recorded: Single-family residential 322,320 327,869 10,527 316,348 Construction - speculative 7,556 7,986 60 7,532 Construction - custom — — — — Land - acquisition & development 4,696 5,636 — 4,114 Land - consumer lot loans 13,002 13,385 — 12,858 Multi-family 5,243 5,463 — 4,957 Commercial real estate 34,159 35,028 — 18,572 Commercial & industrial — — — — HELOC 1,486 1,486 — 1,204 Consumer 43 214 — 79 388,505 397,067 10,587 (1) 365,664 Total: Single-family residential 346,364 354,497 10,527 333,191 Construction - speculative 9,159 10,159 60 9,336 Construction - custom — — — — Land - acquisition & development 5,533 7,961 — 5,152 Land - consumer lot loans 13,976 14,457 — 13,571 Multi-family 6,354 6,574 — 5,284 Commercial real estate 47,393 55,113 — 30,292 Commercial & industrial 3,195 17,166 — 3,900 HELOC 2,505 3,216 — 1,816 Consumer 706 1,047 — 596 $ 435,185 $ 470,190 $ 10,587 (1) $ 403,138 ____________________ (1) Includes $60,000 of specific reserves and $10,527,000 included in the general reserves.

Interest Receivable

Interest Receivable	12 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Interest Receivable	INTEREST RECEIVABLE September 30, 2015 2014 (In thousands) Loans receivable $ 30,930 $ 40,986 Mortgage-backed securities 6,695 7,427 Investment securities 2,804 3,624 $ 40,429 $ 52,037 Interest receivable decreased by $11,608,000 at September 30, 2015 as compared to September 30, 2014 largely as a result of the over-accrual of interest income of $8,872,000 that was corrected in the current year. Management believes this error and its correction had no material impact to any prior reporting period. The remaining difference is primarily due to lower yields on earning assets.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Sep. 30, 2015
Property, Plant and Equipment [Abstract]
Premises and Equipment	PREMISES AND EQUIPMENT September 30, 2015 2014 Estimated Useful Life (In thousands) Land — $ 113,347 $ 113,353 Buildings 25 - 40 147,757 143,627 Leasehold improvements 7 - 15 10,193 8,547 Furniture, software and equipment 2 - 10 89,919 65,154 361,216 330,681 Less accumulated depreciation and amortization (84,969 ) (73,138 ) $ 276,247 $ 257,543 The Bank has non-cancelable operating leases for branch offices. Future minimum net rental commitments for all non-cancelable leases, including maintenance and associated costs, were as follows: $5,272,281,000 for 2016, $3,992,307,000 for 2017, $3,279,576,000 for 2018, $2,608,795,000 for 2019, $2,245,791,000 for 2020 and $8,941,391,000 thereafter. Rental expense, including amounts paid under month-to-month cancelable leases, amounted to $6,600,000 , $6,600,000 and $4,680,000 in 2015 , 2014 and 2013 , respectively.

Customer Accounts

Customer Accounts	12 Months Ended
	Sep. 30, 2015
Banking and Thrift [Abstract]
Customer Accounts	CUSTOMER ACCOUNTS September 30, 2015 2014 (In thousands) Checking accounts, .15% and under $ 2,555,766 $ 2,331,170 Passbook and statement accounts, .10% and under 700,794 622,546 Insured money market accounts, .01% to .15% 2,564,318 2,536,971 Certificate accounts Less than 2.00% 4,303,475 4,524,158 2.00% to 2.99% 501,409 602,683 3.00% to 3.99% 5,156 98,610 4.00% to 4.99% 150 146 5.00% to 5.99% 635 644 Total certificates 4,810,825 5,226,241 $ 10,631,703 $ 10,716,928 Certificate maturities are as follows: September 30, 2015 2014 (In thousands) Within 1 year $ 2,862,313 $ 3,147,172 1 to 2 years 1,068,792 999,090 2 to 3 years 321,118 659,867 Over 3 years 558,602 420,112 $ 4,810,825 $ 5,226,241 Customer accounts over $250,000 totaled $2,096,690,000 as of September 30, 2015 and $1,887,216,000 as of September 30, 2014 . Interest expense on customer accounts consisted of the following: Year ended September 30, 2015 2014 2013 (In thousands) Checking accounts $ 1,036 $ 1,259 $ 936 Passbook and statement accounts 660 607 566 Insured money market accounts 3,631 4,574 4,280 Certificate accounts 46,273 52,636 62,669 51,600 59,076 68,451 Less early withdrawal penalties (546 ) (552 ) (548 ) $ 51,054 $ 58,524 $ 67,903 Weighted average interest rate at end of year 0.48 % 0.51 % 0.69 % Weighted daily average interest rate during the year 0.48 % 0.57 % 0.75 %

FHLB Advances and Other Borrowi

FHLB Advances and Other Borrowings	12 Months Ended
	Sep. 30, 2015
Banking and Thrift [Abstract]
FHLB Advances and Other Borrowings	FHLB ADVANCES AND OTHER BORROWINGS Maturity dates of FHLB advances were as follows: September 30, 2015 2014 (In thousands) FHLB advances Within 1 year $ 250,000 $ 100,000 1 to 3 years 750,000 700,000 4 to 5 years 430,000 730,000 More than 5 years 400,000 400,000 $ 1,830,000 $ 1,930,000 There were no advances included in the above table which are callable by the FHLB. Financial data pertaining to the weighted-average cost and the amount of FHLB advances were as follows: September 30, 2015 2014 2013 (In thousands) Weighted average interest rate at end of year 3.35 % 3.52 % 3.52 % Weighted daily average interest rate during the year 3.57 % 3.56 % 3.57 % Daily average of FHLB advances $ 1,848,904 $ 1,955,205 $ 1,905,479 Maximum amount of FHLB advances at any month end $ 1,930,000 $ 2,205,000 $ 1,930,000 Interest expense during the year (excludes interest rate swap expense) $ 64,331 $ 68,307 $ 68,075 On June 1, 2015, the FHLB of Seattle merged into the FHLB of Des Moines to create a larger, financially stronger, member-owned cooperative. The Bank has a credit line with the Federal Home Loan Bank of Des Moines ("FHLB") equal to 49.0% of total assets. The FHLB of Des Moines has assumed the Bank's advances with the FHLB of Seattle as of the merger date. The Bank has entered into borrowing agreements with the FHLB to borrow funds under a short-term floating rate cash management advance program and a fixed-rate term loan agreements. All borrowings are secured by stock of the FHLB, deposits with the FHLB, and a blanket pledge of qualifying loans receivable as provided in the agreements with the FHLB. As of September 30, 2015 , 2014 and 2013, respectively, there were no reverse repurchase agreements or other borrowings. The Bank has historically entered into sales of reverse repurchase agreements which are an additional source of liquidity. Fixed-coupon reverse repurchase agreements have been treated as financings, and the obligations to repurchase securities sold have been reflected as a liability in the consolidated statements of financial condition in prior years.

Derivatives and Hedging Activit

Derivatives and Hedging Activities Derivatives and Hedging Activities	12 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	DERIVATIVES AND HEDGING ACTIVITIES The Bank periodically enters into certain interest rate swap agreements in order to provide commercial loan customers the ability to convert their obligations from variable to fixed interest rates. Under these agreements, the Bank enters into a variable-rate loan agreement with a customer in addition to a swap agreement, and then enters into a corresponding swap agreement with a third party in order to offset its exposure on the customer swap agreement. As the interest rate swap agreements with the customers and third parties are not designated as hedges under FASB ASC 815, Derivatives and Hedging, the instruments are marked to market in earnings. The Bank has also entered into forward-starting interest rate swaps to convert future short-term borrowings to fixed rate payments. The primary purpose of this hedge is to mitigate interest rate risk. More specifically, to mitigate the interest rate risk of rising LIBOR rates which are a benchmark for the short term borrowings. These interest rate swaps qualify as cash flow hedging instruments under FASB ASC 815 which provides for matching of the recognition of gains and losses of the interest rate swaps and the hedged items. The hedged item is the LIBOR portion of the series of future short-term fixed rate borrowings over the term of the interest rate swap. Prior to the starting date, the change in the fair value of the interest rate swap will be recorded in Other Comprehensive Income. The Bank has also entered into an interest rate swap to hedge a commercial loan. This interest rate swap qualifies as a fair value hedging instrument under FASB ASC 815 which provides for matching of the recognition of gains and losses of the interest rate swap and the hedged item. The hedged item is the commercial loan. The notional amount of open interest rate swap agreements at September 30, 2015 was $894,231,000 . This included $439,416,000 in interest rate swaps in the customer derivatives program. There was no net impact on income due to changes in fair value for the 12 months ended September 30, 2015 for these interest rate swaps as the changes in value for the asset swap and the liability swap offset each other. The fee income related to these swaps was $1,939,598 for 2015 and $920,705 for 2014 . This amount is included in miscellaneous loan fees. Additionally, the Bank had $400,000,000 in forward starting interest rate swaps to hedge future borrowing rates. Their impact on other comprehensive income as of September 30, 2015 was a loss of $9,205,790 . The Bank also had $54,815,000 in an interest rate swap related to a commercial loan hedge. The bank has pledged a security with $59,000,000 in par value as collateral with its counterparty to these derivative transactions. The following table presents the fair value and balance sheet classification of derivatives at September 30, 2015 and September 30, 2014 : Asset Derivatives Liability Derivatives September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 (In thousands) Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Client derivatives Other assets $ 11,879 Other assets $ 2,611 Other liabilities $ 11,879 Other liabilities $ 2,611 Commercial loan hedge Other assets — Other assets — Other liabilities 966 Other liabilities — Long term borrowing hedge Other assets — Other assets — Other liabilities 14,555 Other liabilities 268 $ 11,879 $ 2,611 $ 27,400 $ 2,879 Derivatives at fair value are priced using model pricing based on their relationship to other benchmark quoted prices as provided by an independent third party and under the provisions of FASB ASC 820, Fair Value Measurement, are considered a Level 2 input method.

Income Taxes

Income Taxes	12 Months Ended
	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Consolidated Statements of Financial Condition at September 30, 2015 and 2014 includes net deferred tax assets (liabilities) of $11,549,000 and $2,448,000 , respectively, that have been provided for the temporary differences between the tax basis and the financial statement carrying amounts of liabilities and assets. The major sources of these temporary differences and their deferred tax effects were as follows: September 30, 2015 2014 (In thousands) Deferred tax assets Loan loss reserves $ 43,749 $ 48,505 REO reserves 11,213 13,680 Asset purchase tax basis difference (net) 5,973 8,812 Delinquent accrued interest 3,069 4,767 FDIC loss share guarantee receivable 7,803 1,800 Other, net 3,891 4,749 Total deferred tax assets 75,698 82,313 Deferred tax liabilities Federal Home Loan Bank stock dividends 24,135 32,810 Valuation adjustment on available-for-sale securities 205 12,032 Loan origination costs 13,875 13,002 Depreciation 25,934 22,021 Total deferred tax liabilities 64,149 79,865 Net deferred tax asset 11,549 2,448 Current tax asset 2,964 14,067 Net tax asset $ 14,513 $ 16,515 A reconciliation of the statutory federal income tax rate to the effective income tax rate follows: Year ended September 30, 2015 2014 2013 Statutory income tax rate 35 % 35 % 35 % State income tax 2 2 2 Other differences (1 ) (1 ) (2 ) Effective income tax rate 36 % 36 % 35 % Income taxes (benefit) are summarized as follows: 2015 2014 2013 (In thousands) Federal: Current $ 79,841 $ 70,797 $ 66,756 Deferred 3,244 10,591 10,355 83,085 81,388 77,111 State: Current $ 6,636 $ 4,987 $ 5,213 Deferred (518 ) 1,189 787 6,118 6,176 6,000 Total Current 86,477 75,784 71,969 Deferred 2,726 11,780 11,142 $ 89,203 $ 87,564 $ 83,111 Based on current information the Company does not expect that changes in the amount of unrecognized tax benefits over the next twelve months will have a significant impact on the results of operations or the financial position of the Company. As of 2015 and 2014 , the Company's liability for uncertain tax positions was $100,000 and $100,000 , respectively. Included in the balance of unrecognized tax benefits at 2015 , are $100,000 of tax benefits that, if recognized, would affect the effective tax rate. The Company records interest and penalties related to uncertain tax positions in income tax expense. As of 2015 and 2014 , there were approximately $10,000 and $12,000 , respectively, of accrued interest and no accrued penalties. The Company's federal income tax returns are open for the tax years 2013 through 2015 . The Company has been examined by the Internal Revenue Service through the year ended September 30, 2012. State income tax returns are generally subject to examination for a period of three to five years after filing of the respective return. The state impact of any federal changes remains subject to examination by various states for a period of up to two years after formal notification to the states. The Company's unrecognized tax benefits are related to state tax returns open from 2012 through 2015 .

401(k) and Employee Stock Owner

401(k) and Employee Stock Ownership Plan	12 Months Ended
	Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]
401(k) and Employee Stock Ownership Plan	401(k) AND EMPLOYEE STOCK OWNERSHIP PLAN The Company maintains a 401(k) and Employee Stock Ownership Plan (the "Plan") for the benefit of its employees. Company contributions are made semi-annually as approved by the Board of Directors. Such amounts are not in excess of amounts permitted by the Employee Retirement Income Security Act of 1974. Plan participants may make voluntary after-tax contributions of their considered earnings as defined by the Plan. In addition, participants may make pre-tax contributions up to the statutory limits through the 401(k) provisions of the Plan. The annual addition from contributions to an individual participant's account in this Plan cannot exceed the lesser of 100% of base salary or $53,000 . Under provisions of the Plan, employees are eligible to participate on the date of hire and become fully vested in the Company's contributions following six years of service. Effective January 1, 2014, the Company added a guaranteed safe harbor matching contribution component to the plan equal to 100% of the first 4% of compensation that employee's contribute to their account. In addition to the new match being guaranteed, all safe harbor matching contributions are immediately vested. The new match is not subject to the 6 year vesting schedule of the current profit sharing contribution. This provides plan participants more investment flexibility. The Company anticipates that all eligible employees, regardless of personal plan participation, will continue to receive an annual discretionary profit sharing contribution from the Company, now capped at 7% of eligible compensation with this change. Company contributions to the Plan amounted to $8,700,000 , $7,314,000 and $5,870,000 for the years ended 2015 , 2014 , and 2013 , respectively.

Stock Award Plans

Stock Award Plans	12 Months Ended
	Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Award Plans	STOCK AWARD PLANS The Company has one equity-based compensation plan which was approved by stockholders and provides for a combination of stock options and stock grants. Stockholders authorized 5,000,000 shares of common stock to be reserved pursuant to the 2011 Incentive Plan. Under the Plan, 4,201,230 shares remain available for issuance. During 2015, 2014 and 2013, there were no stock options granted; however, stock grants were issued in each of those years. When applicable, stock options are granted with an exercise price equal to the market price of the Company's stock at the date of grant; those option awards generally vest based on 5 years of continuous service and have 10 -year contractual terms. The Company's policy is to issue new shares upon option exercises. The fair value of options granted is estimated on the date of grant using the Black-Scholes option-pricing model. This model requires input of highly subjective assumptions, changes to which can materially affect the fair value estimate. Additionally, there may be other factors that would otherwise have a significant effect on the value of employee stock options granted but are not considered by the model. Expected volatility is based on the historical volatility of the Company's stock. The risk-free interest rate is based on the U.S. Treasury yield curve that is in effect at the time of grant with a remaining term equal to the options' expected life. The expected term represents the period of time that options granted are expected to be outstanding. Stock Option Awards: There were no stock options granted during 2015, 2014, and 2013. A summary of stock option activity under the Plan as of 2015 and changes during the year are as follows: Options Shares Weighted Weighted Aggregate Outstanding at September 30, 2014 1,249,009 $ 21.11 4 $1,859 Granted — — Exercised (128,394 ) 16.12 Forfeited (93,241 ) 22.18 Outstanding at September 30, 2015 1,027,374 $ 21.64 3 $ 1,867 Exercisable at September 30, 2015 958,087 $ 21.99 2 $ 1,459 Miscellaneous information related to stock options is presented below: 2015 2014 2013 (In thousands, except fair value of options granted) Compensation cost for stock options $ 232 $ 324 $ 473 Weighted avg. grant date FV 2.96 2.95 3.24 Total intrinsic value of options exercised 831 1,136 781 Grant date FV of options exercised 368 1,962 791 Cash received from option exercises 2,069 10,142 4,261 Tax benefit realized for option exercises — 159 53 A summary of the Company's non-vested stock options is as follows: 2015 2014 2013 Non-vested Stock Options Options Outstanding Weighted Options Outstanding Weighted Options Outstanding Weighted Outstanding at beginning of period 145,795 $ 3.87 287,750 $ 3.44 614,272 $ 3.20 Granted — — — — — — Vested (61,018 ) 3.88 (119,520 ) 2.88 (283,407 ) 2.95 Forfeited (15,490 ) 3.90 (22,435 ) 3.63 (43,115 ) 3.25 Outstanding at end of period 69,287 $ 3.85 145,795 $ 3.87 287,750 $ 3.44 As of September 30, 2015 , unrecognized compensation cost for stock options net of forfeitures totaled $95,182 , which is expected to be recognized over a weighted average remaining period of 0.5 years. Restricted Stock Grant Awards: The Company also grants shares of restricted stock pursuant to its 2011 Incentive Plan. These shares of restricted stock vest over a period of one to seven years . The Company had a total of 521,302 shares of restricted stock outstanding as of September 30, 2015 , with a fair market value at the date of grant of $7.8 million . At the prior year end, the Company had a total of 515,845 restricted shares issued with a fair market value at the date of grant of $7.3 million . The following table summarizes information about nonvested restricted share activity for the years ended September 30: 2015 2014 2013 Non-vested Restricted Stock Outstanding Weighted Outstanding Weighted Outstanding Weighted Outstanding at beginning of period 515,845 $ 14.10 480,904 $ 11.52 371,096 $ 11.88 Granted 301,750 14.26 300,500 $ 15.43 270,750 11.67 Vested (223,043 ) 13.24 (202,014 ) 11.68 (134,792 ) 11.87 Forfeited (73,250 ) 10.72 (63,545 ) 8.50 (26,150 ) 16.45 Outstanding at end of period 521,302 $ 15.03 515,845 $ 14.10 480,904 $ 11.52 Compensation expense related to restricted stock was $3,271,564 , $3,085,081 and $2,815,049 for the years ended 2015 , 2014 and 2013 , respectively.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Sep. 30, 2015
Equity [Abstract]
Stockholders' Equity	STOCKHOLDERS' EQUITY The Company and the Bank are subject to various regulatory capital requirements. Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the following table) of Common Equity Tier 1, Tier 1 and Total capital to risk weighted assets (as defined in the regulations) and Tier 1 capital to average assets (as defined in the regulations). Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary action by regulators that, if undertaken, could have a direct material effect on the Company's financial statements. The Company and the Bank are also subject to certain restrictions on the amount of dividends that they may declare without prior regulatory approval. As of September 30, 2015 and 2014 , the Company and the Bank met all capital adequacy requirements to which they are subject, and the OCC categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the Bank must maintain minimum Common Equity Tier 1, Tier 1 risk-based, Total risk-based and Tier 1 leverage ratios as set forth in the following table. The Bank's actual capital amounts and ratios as of these dates are also presented. There are no conditions or events since that management believes have changed the Bank's categorization. Actual Capital Adequacy Categorized as Well Capitalized Under Prompt Corrective Action Provisions Capital Ratio Capital Ratio Capital Ratio As of September 30, 2015 (In thousands) Common Equity Tier 1 risk-based capital ratio: The Company $ 1,658,985 18.81 % $637,788 4.50 % NA NA The Bank 1,652,569 18.73 637,810 4.50 $ 921,281 6.50 % Tier 1 risk-based capital ratio: The Company 1,658,985 18.81 529,051 6.00 NA NA The Bank 1,652,569 18.73 529,360 6.00 705,814 8.00 Total risk-based capital ratio: The Company 1,769,587 20.07 705,402 8.00 NA NA The Bank 1,763,171 19.98 705,814 8.00 882,267 10.00 Tier 1 leverage ratio: The Company 1,658,985 11.71 566,923 4.00 NA NA The Bank 1,652,569 11.66 566,942 4.00 708,678 5.00 As of September 30, 2014 Tier 1 risk-based capital ratio: The Company $ 1,648,199 22.71 % $290,335 4.00 % NA NA The Bank 1,658,704 22.85 290,386 4.00 $ 435,579 6.00 % Total risk-based capital ratio: The Company 1,739,658 23.97 580,671 8.00 NA NA The Bank 1,750,179 24.11 580,772 8.00 725,965 10.00 Tier 1 leverage ratio: The Company 1,648,199 11.39 578,804 4.00 NA NA The Bank 1,658,704 11.46 578,816 4.00 723,520 5.00 At periodic intervals, the Federal Reserve, the OCC and the FDIC routinely examine the Company's and the Bank's financial statements as part of their oversight. Based on their examinations, these regulators can direct that the Company's or Bank's financial statements be adjusted in accordance with their findings. The extent to which forthcoming regulatory examinations may result in adjustments to the financial statements cannot be determined; however, no adjustments were proposed as a result of the most recent examination which concluded in July, 2015 . The federal banking agencies released new regulatory capital rules which became effective on January 1, 2015. These new rules raised the minimum capital ratios and established new criteria for regulatory capital. Minimum capital ratios for four measures are now established for capital adequacy purposes as indicated in the table above. The Common Equity Tier 1 capital ratio is new; it recognizes common equity as the highest form of capital. The denominator for all except the leverage ratio is risk weighted assets. The new rules also set forth a "capital conversation buffer" of up to 2.5% . In the event that a bank's capital levels fall below the minimum ratios plus these buffers, restrictions can be placed on the bank by its regulators. These restrictions include reducing dividend payments, share-backs and staff bonus payments. The purpose of these buffers is to require banks to build up capital outside of periods of stress that can be drawn down during periods of stress. As a result, even during periods where losses are incurred, the minimum capital ratios can still be met. The new capital rules detail a phase-in period for the new minimum ratios and the capital buffers before the full minimum ratios take effect in 2019. The Company has calculated its capital ratios using the new rules since March 31, 2015. This did not have a material impact on its consolidated financial statements. There are also new standards for Adequate and Well Capitalized criteria that are used for "Prompt Corrective Action" purposes. To remain categorized as well capitalized, the Bank must maintain minimum Common Equity Tier 1 risk-based, Tier 1 risk-based, Total risk-based and Tier 1 leverage ratios as set forth in the above table. These rules are further described in the 10-K report under "Washington Federal, National Association (Bank) - Regulatory Capital Requirements". Both the Company and the Bank have more than enough capital to readily meet these new guidelines. The Company paid its 131st consecutive quarterly cash dividend on November 20, 2015 to common stockholders of record on November 6, 2015. The Company and the Bank are subject to restrictions on paying dividends that are further described in the 10-K report under "The Company - Restrictions on Company Dividends" and "Washington Federal, National Association (Bank) - Restrictions on Dividends". The Company has an ongoing stock repurchase program. 5,841,204 shares were repurchased during 2015 at a weighted average price of $21.70 . In 2014 , 4,830,400 shares were repurchased during the year at a weighted average price of $21.59 . As of September 30, 2015 , Management had authorization from the Board of Directors to repurchase up to 4,201,230 additional shares. In connection with the 2008 Troubled Asset Relief Program ("TARP") the Company issued 1,707,456 warrants to purchase common stock at an exercise price of $17.57 . As of September 30, 2015 , 1,700,856 warrants remained outstanding with an expiration date of November 14, 2018. The warrants have been included in the calculation of diluted shares outstanding using the treasury stock method. The following table sets forth information regarding earnings per share calculations: Year ended September 30, 2015 2014 2013 Weighted average shares outstanding 95,644,639 101,154,030 104,684,812 Weighted average dilutive warrants 340,016 352,171 100,211 Weighted average dilutive options 69,304 84,150 52,447 Weighted average diluted shares 96,053,959 101,590,351 104,837,470 Net income (In thousands) $ 160,316 $ 157,364 $ 151,505 Basic EPS $ 1.68 $ 1.56 $ 1.45 Diluted EPS 1.67 1.55 1.45

Fair Values of Financial Instru

Fair Values of Financial Instruments	12 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	FAIR VALUES OF FINANCIAL INSTRUMENTS U.S. GAAP requires disclosure of fair value information about financial instruments, whether or not recognized on the statement of financial condition, for which it is practicable to estimate those values. Certain financial instruments and all non-financial instruments are excluded from the disclosure requirements. Accordingly, the aggregate fair value estimates presented do not reflect the underlying fair value of the Company. Although Management is not aware of any factors that would materially affect the estimated fair value amounts presented, such amounts have not been comprehensively revalued for purposes of these financial statements since that date, and therefore, estimates of fair value subsequent to that date may differ significantly from the amounts presented below. 2015 2014 Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (In thousands) Financial assets Cash and cash equivalents 1 $ 284,049 $ 284,049 $ 781,843 $ 781,843 Available-for-sale securities: Equity securities 1 101,952 101,952 101,387 101,387 Obligations of U.S. government 2 482,464 482,464 731,943 731,943 Obligations of states and political subdivisions 2 27,123 27,123 23,681 23,681 Corporate debt securities 2 505,800 505,800 509,007 509,007 Mortgage-backed securities Agency pass-through certificates 2 1,160,518 1,160,518 1,584,508 1,584,508 Other commercial MBS 2 102,706 102,706 98,916 98,916 Total available-for-sale securities 2,380,563 2,380,563 3,049,442 3,049,442 Held-to-maturity securities: Mortgage-backed securities Agency pass-through certificates 2 1,643,216 1,637,420 1,548,265 1,499,218 Total held-to-maturity securities 1,643,216 1,637,420 1,548,265 1,499,218 Loans receivable 3 9,170,634 9,667,750 8,324,798 8,844,532 FDIC indemnification asset 3 16,275 15,522 36,860 35,976 FHLB and FRB stock 2 107,198 107,198 158,839 158,839 Other assets - interest rate contracts 2 11,879 11,879 2,611 2,611 Financial liabilities Customer accounts 2 10,631,703 10,004,290 10,716,928 9,946,586 FHLB advances and other borrowings 2 1,830,000 1,938,384 1,930,000 2,054,437 Other liabilities - interest rate contracts 2 11,879 11,879 2,611 2,611 Other liabilities - commercial loan hedge 2 966 966 — — Other liabilities - long term borrowing hedge 2 14,555 14,555 268 268 For a description of the level in fair value hierarchy under the provisions of the Fair Value Measurements and Disclosures topic of the FASB Accounting Standards Codification please see note Q. The following methods and assumptions were used to estimate the fair value of financial instruments: Cash and cash equivalents – The carrying amount of these items is a reasonable estimate of their fair value. Available-for-sale securities and held-to-maturity securities – Securities at fair value are priced using model pricing based on the securities' relationship to other benchmark quoted prices as provided by an independent third party and under the provisions of the Fair Value Measurements and Disclosures topic of the FASB Accounting Standards Codification are considered a Level 2 input method except for equity securities where the quoted price for an identical instrument is used which are considered a Level 1 input method. Loans receivable – For certain homogeneous categories of loans, such as fixed- and variable-rate residential mortgages, fair value is estimated for securities backed by similar loans, adjusted for differences in loan characteristics, using the same methodology described above for AFS and HTM securities. The fair value of other loan types is estimated by discounting the future cash flows and estimated prepayments using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining term. Some loan types were valued at carrying value because of their floating rate or expected maturity characteristics. Net deferred loan fees are not included in the fair value calculation but are included in the carrying amount. FDIC indemnification asset – The fair value of the indemnification asset is estimated by discounting the expected future cash flows using the current rates. FHLB and FRB stock – The fair value is based upon the redemption value of the stock which equates to its carrying value. Customer accounts – The fair value of demand deposits, savings accounts, and money market accounts is the amount payable on demand at the reporting date. The fair value of fixed-maturity certificates of deposit is estimated by discounting the estimated future cash flows using the rates currently offered for deposits with similar remaining maturities. FHLB advances and other borrowings – The fair value of FHLB advances and other borrowings is estimated by discounting the estimated future cash flows using rates currently available to the Company for debt with similar remaining maturities. Interest Rate Contracts – The bank offers interest rate swaps to its variable rate borrowers who want to manage their interest rate risk. At the same time, the bank enters into the opposite trade with a counterparty to offset its interest rate risk. The fair value of these interest rate swaps are estimated by a third party pricing service using a discounted cash flow technique. Long Term Borrowing Hedges – The fair value of the forward starting interest rate swaps are estimated by a third party pricing service using a discounted cash flow technique. Commercial Loan Hedges – The fair value of the interest rate swaps are estimated by a third party pricing service using a discounted cash flow technique.

Financial Information - Washing

Financial Information - Washington Federal, INC.	12 Months Ended
	Sep. 30, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Financial Information - Washington Federal, INC.	FINANCIAL INFORMATION – WASHINGTON FEDERAL, INC. The following Washington Federal, Inc. (parent company only) financial information should be read in conjunction with the other notes to the Consolidated Financial Statements. Condensed Statements of Financial Condition September 30, 2015 2014 (In thousands) Assets Cash $ 7,628 $ 3,895 Investment in subsidiary 1,949,262 1,983,788 Total assets $ 1,956,890 $ 1,987,683 Liabilities Dividend payable and other liabilities $ 1,211 $ 14,400 Total liabilities 1,211 14,400 Stockholders’ equity Total stockholders’ equity 1,955,679 1,973,283 Total liabilities and stockholders’ equity $ 1,956,890 $ 1,987,683 Condensed Statements of Operations Year ended September 30, 2015 2014 2013 (In thousands) Income Dividends from subsidiary $ 175,000 $ 70,000 $ 143,799 Total Income 175,000 70,000 143,799 Expense Miscellaneous 439 485 530 Total expense 439 485 530 Net income before equity in undistributed net income of subsidiary 174,561 69,515 143,269 Equity in undistributed net income of subsidiary (14,402 ) 87,675 8,045 Income before income taxes 160,159 157,190 151,314 Income tax benefit 157 174 191 Net income $ 160,316 $ 157,364 $ 151,505 Condensed Statements of Cash Flows Year ended September 30, 2015 2014 2013 (In thousands) Cash Flows From Operating Activities Net income $ 160,316 $ 157,364 $ 151,505 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiaries 32,375 (87,943 ) (4,893 ) Decrease (increase) in other assets — 1 1 Increase in other liabilities (13,189 ) 4,152 1,698 Net cash provided by operating activities 179,502 73,574 148,311 Cash Flows From Financing Activities Proceeds from exercise of common stock options and related tax benefit 2,070 10,252 4,261 Treasury stock purchased (126,728 ) (104,291 ) (110,238 ) Dividends paid on common stock (51,111 ) (42,065 ) (37,835 ) Net cash used in financing activities (175,769 ) (136,104 ) (143,812 ) Increase (decrease) in cash 3,733 (62,530 ) 4,499 Cash at beginning of year 3,895 66,425 61,926 Cash at end of year $ 7,628 $ 3,895 $ 66,425

Selected Quarterly Financial Da

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Sep. 30, 2015
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (Unaudited)	SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) The following is a summary of the unaudited interim results of operations by quarter for the years ended September 30, 2015 and 2014 : Year Ended September 30, 2015 First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) Interest income $ 133,284 $ 132,630 $ 129,300 $ 135,339 Interest expense 31,101 28,750 28,735 28,486 Net interest income 102,183 103,880 100,565 106,853 Provision (reversal) for loan losses (5,500 ) (3,949 ) (1,932 ) 219 Other operating income (REO expense) 5,695 12,314 14,999 16,719 Other operating expense 53,600 57,324 56,719 57,208 Income before income taxes 59,778 62,819 60,777 66,145 Income taxes 21,371 22,458 21,727 23,647 Net income $ 38,407 $ 40,361 $ 39,050 $ 42,498 Basic earnings per share $ 0.39 $ 0.42 $ 0.41 $ 0.46 Diluted earnings per share 0.39 0.42 0.41 0.45 Cash dividends paid per share 0.15 0.13 0.13 0.13 Return of average assets 1.05 % 1.11 % 1.08 % 1.17 % Year Ended September 30, 2014 First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) Interest income $ 131,258 $ 132,351 $ 135,011 $ 135,077 Interest expense 32,946 31,715 31,732 31,684 Net interest income 98,312 100,636 103,279 103,393 Provision (reversal) for loan losses (4,600 ) (4,336 ) (3,000 ) (3,465 ) Other operating income (REO expense) 3,837 7,255 6,016 10,808 Other operating expense 44,120 52,059 53,293 54,537 Income before income taxes 62,629 60,168 59,002 63,129 Income taxes 22,393 21,511 21,092 22,568 Net income $ 40,236 $ 38,657 $ 37,910 $ 40,561 Basic earnings per share $ 0.39 $ 0.38 $ 0.38 $ 0.41 Diluted earnings per share 0.39 0.38 0.37 0.41 Cash dividends paid per share 0.10 0.10 0.10 0.11 Return of average assets 1.19 % 1.07 % 1.04 % 1.10 %

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements U.S. GAAP defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. U.S. GAAP also establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active exchange markets that the entity has the ability to access as of the measurement date. Level 2: Significant other observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active and other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. We have established and documented the Company's process for determining the fair values of our assets and liabilities, where applicable. Fair value is based on quoted market prices, when available, for identical or similar assets or liabilities. In the absence of quoted market prices, fair value is determined using valuation models or third-party appraisals. The following is a description of the valuation methodologies used to measure and report the fair value of financial assets and liabilities on a recurring or nonrecurring basis: Measured on a Recurring Basis Securities available for sale and interest rate contracts Securities at fair value are priced using model pricing based on the securities' relationship to other benchmark quoted prices as provided by an independent third party, and under the provisions of FASB ASC 820, Fair Value Measurement, are considered a Level 2 input method. The bank offers interest rate swaps to its variable rate borrowers who want to manage their interest rate risk. At the same time, the bank enters into the opposite trade with a counter party to offset its interest rate risk. The bank has also entered into long term borrowing hedges through forward starting interest rate swaps. The fair value of these interest rate swaps are estimated by a third party pricing service using a discounted cash flow technique. These are considered a Level 2 input method. The following table presents the balance of assets measured at fair value on a recurring basis at September 30, 2015 and September 30, 2014 : Fair Value at September 30, 2015 Level 1 Level 2 Level 3 Total (In thousands) Available-for-sale securities Equity securities $ 101,952 $ — $ — $ 101,952 Obligations of U.S. government — 482,464 — 482,464 Obligations of states and political subdivisions — 27,123 — 27,123 Obligations of foreign governments — — — — Corporate debt securities — 505,800 — 505,800 Agency pass through mortgage-backed securities — 1,160,518 — 1,160,518 Other commercial MBS — 102,706 — 102,706 Other debt securities — — — — Total Available-for-sale securities 101,952 2,278,611 — 2,380,563 Interest rate contracts — 11,879 — 11,879 Total Financial Assets $ 101,952 $ 2,290,490 $ — $ 2,392,442 Financial Liabilities Interest rate contracts $ — $ 11,879 $ — $ 11,879 Commercial loan hedge — 966 — 966 Long term borrowing hedge — 14,555 — 14,555 Total Financial Liabilities $ — $ 27,400 $ — $ 27,400 There were no transfers between, into and/or out of Levels 1, 2 or 3 during the year ended September 30, 2015 . Fair Value at September 30, 2014 Level 1 Level 2 Level 3 Total (In thousands) Available-for-sale securities Equity securities $ 101,387 $ — $ — $ 101,387 Obligations of U.S. government — 731,943 — 731,943 Obligations of states and political subdivisions — 23,681 — 23,681 Obligations of foreign governments — — — — Corporate debt securities — 509,007 — 509,007 Agency pass through mortgage-backed securities — 1,584,508 — 1,584,508 Other commercial MBS — 98,916 — 98,916 Other debt securities — — — — Total Available-for-sale securities 101,387 2,948,055 — 3,049,442 Interest rate contracts — 2,611 — 2,611 Total Financial Assets $ 101,387 $ 2,950,666 $ — $ 3,052,053 Financial Liabilities Interest rate contracts $ — $ 2,611 $ — $ 2,611 Commercial loan hedge — — — — Long term borrowing hedge — 268 — 268 Total Financial Liabilities $ — $ 2,879 $ — $ 2,879 There were no transfers between, into and/or out of Level 1, 2 or 3 during the year ended September 30, 2014. Measured on a Nonrecurring Basis Impaired Loans & Real Estate Owned Real estate owned consists principally of properties acquired through foreclosure. From time to time, and on a nonrecurring basis, fair value adjustments are recorded to reflect increases or decreases of principal balances based on the current appraisal or estimated value of the collateral, but only up to the fair value of the real estate owned as of the initial transfer date less selling costs. When management determines that the fair value of the collateral or the real estate held for sale requires additional adjustments, either as a result of a non-current appraisal value or when there is no observable market price, the Company classifies the impaired loan or real estate held for sale as Level 3. Level 3 assets recorded at fair value on a nonrecurring basis at September 30, 2015 included loans for which a specific reserve allowance was established or a partial charge-off was recorded based on the fair value of collateral, as well as covered REO and real estate held for sale for which fair value of the properties was less than the cost basis. The following table presents the aggregated balance of assets that were measured at estimated fair value on a nonrecurring basis for the year ended September 30, 2015 and September 30, 2014 , and the total losses (gains) resulting from those fair value adjustments for the quarter and year ended September 30, 2015 and September 30, 2014 . These estimated fair values are shown gross of estimated selling costs: As of September 30, 2015 Quarter Year Ended September 30, 2015 Level 1 Level 2 Level 3 Total Total (Gains) Losses (In thousands) Impaired loans (1) $ — $ — $ 6,735 $ 6,735 $ 40 $ 4,241 Covered REO (2) — — 2,203 2,203 (7 ) 161 Real estate held for sale (2) — — 79,245 79,245 661 (7,910 ) Balance at end of period $ — $ — $ 88,183 $ 88,183 $ 694 $ (3,508 ) ___________________ (1) The losses represent remeasurements of collateral-dependent loans. (2) The (gains) losses represent aggregate writedowns and charge-offs on real estate held for sale. As of September 30, 2014 Quarter Year Ended September 30, 2014 Level 1 Level 2 Level 3 Total Total (Gains) Losses (In thousands) Impaired loans (1) $ — $ — 10,156 $ 10,156 — (1,311 ) Covered REO (2) — — 10,520 10,520 113 616 Real estate held for sale (2) — — 51,624 51,624 1,878 18,660 Balance at end of period $ — $ — $ 72,300 $ 72,300 $ 1,991 $ 17,965 ___________________ (1) The (gains) losses represent remeasurements of collateral-dependent loans. (2) The losses represent aggregate writedowns and charge-offs on real estate held for sale. The following describes the process used to value Level 3 assets measured on a nonrecurring basis: Impaired loans - The Company adjusts the carrying amount of impaired loans when there is evidence of probable loss and the expected fair value of the loan is less than its contractual amount. The amount of the impairment may be determined based on the estimated present value of future cash flows or the fair value of the underlying collateral. Impaired loans with a specific reserve allowance based on cash flow analysis or the value of the underlying collateral are classified as Level 3 assets. The evaluations for impairment are prepared by the Problem Loan Review Committee, which is chaired by the Chief Credit Officer and includes the Loan Review manager and Special Credits manager, as well as senior credit officers, division managers and group executives, as applicable. These evaluations are performed in conjunction with the quarterly allowance for loan loss process. Applicable loans are evaluated for impairment on a quarterly basis. Loans included in the previous quarter's review are reevaluated and if their values are materially different from the prior quarter evaluation, the underlying information (loan balance and collateral value) are compared. Material differences are evaluated for reasonableness and discussions are held between the relationship manager and their division manager to understand the difference and determine if any adjustment is necessary. The inputs are developed and substantiated on a quarterly basis, based on current borrower developments, market conditions and collateral values. The following methods are used to value impaired loans: • The fair value of the collateral, which may take the form of real estate or personal property, is based on internal estimates, field observations, assessments provided by third-party appraisers and other valuation models. The Company performs or reaffirms valuations of collateral-dependent impaired loans at least annually. Adjustments are made if management believes that more recent information is available and relevant with respect to the fair value of the collateral. • The present value of the expected future cash flows of the collateral is used for measurement of non collateral-dependent loans to test for impairment. The Company calculates the amount and timing of the future cash flows, the effective interest rate to be used to discount the cash flows and the basis for determination of the cash flows, including consideration of current economic and environmental factors, as well as other information relating to current or previous conditions. Real estate owned ("REO") - When a loan is reclassified from loan status to real estate held for sale due to the Company taking possession of the collateral, a Special Credits officer, along with the Special Credits manager, obtains a valuation, which may include appraisals or third-party price options, which is used to establish the fair value of the underlying collateral. The determined fair value, less selling costs, becomes the carrying value of the REO asset. The fair value of REO assets is re-evaluated quarterly and the REO asset is adjusted to reflect the fair value as necessary. After foreclosure, the valuations are updated periodically and current market conditions may require the assets to be written down further or up to the cost basis established on the date of transfer. The carrying balance of REO assets are also written down or up once a bona fide offer is contractually accepted, through execution of a Purchase and Sale Agreement, where the accepted price is lower than the cost established on the transfer date.

Summary of Significant Accoun25

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Fiscal period	The Company's fiscal year end is September 30th. All references to 2015 , 2014 and 2013 represent balances as of September 30, 2015 , September 30, 2014 and September 30, 2013 , or activity for the fiscal years then ended. References to net income in this document refer to net income available to common shareholders.
Cash and cash equivalents	Cash and cash equivalents. Cash and cash equivalents include cash on hand, amounts due from banks, overnight investments and repurchase agreements with an initial maturity of three months or less.
Investments and mortgage-backed securities	Investments and mortgage-backed securities. The Company accounts for investments and mortgage-backed securities in two categories: held-to-maturity and available-for-sale. Premiums and discounts on investments are deferred and recognized into income over the life of the asset using the effective interest method. Held-to-maturity securities are accounted for at amortized cost, but the Company must have both the positive intent and the ability to hold those securities to maturity. There are very limited circumstances under which securities in the held-to-maturity category can be sold without jeopardizing the cost basis of accounting for the remainder of the securities in this category. Available-for-sale securities are accounted for at fair value. Gains and losses realized on the sale of these securities are accounted for based on the specific identification method. Unrealized gains and losses for available-for-sale securities are excluded from earnings and reported net of the related tax effect in the accumulated other comprehensive income component of stockholders' equity. Realized gains and losses on securities sold as well as other than temporary impairment charges, if any, are shown on the Consolidated Statements of Operations under the Other Income heading. Management evaluates debt and equity securities for other than temporary impairment on a quarterly basis based on the securities' current credit quality, market interest rates, term to maturity and management's intent and ability to hold the securities until the net book value is recovered.
Loans receivable	Loans receivable. Loans that are performing in accordance with their contractual terms are carried at their amortized cost and expected interest is accrued. The Bank also receives fees for originating loans in addition to various fees and charges related to existing loans, which may include prepayment charges, late charges and assumption fees. When a borrower fails to make a required payment on a loan, the Bank attempts to cure the deficiency by contacting the borrower. Contact is made after a payment is 30 days past its grace period. In most cases, deficiencies are cured promptly. If the delinquency is not cured within 90 days, the Bank may institute appropriate action to foreclose on the property. If foreclosed, the property is sold at a public sale and may be purchased by the Bank. Restructured loans. The Bank will consider modifying the interest rates and terms of a loan if it determines that a modification is a better alternative to foreclosure. Most troubled debt restructured ("TDR") loans are accruing and performing loans where the borrower has proactively approached the Bank about modifications due to temporary financial difficulties. Each request is individually evaluated for merit and likelihood of success. The concession for these loans is typically a payment reduction through a rate reduction of 100 to 200 bps for a specific term, usually six to twelve months. Interest-only payments may also be approved during the modification period. Principal forgiveness is generally not an available option for restructured loans. Before granting approval to modify a loan in a TDR, the borrower’s ability to repay is evaluated, including: current income levels and debt to income ratio, borrower’s credit score, payment history of the loan, and updated evaluation of the secondary repayment source. The Bank also modifies some loans that are not classified as TDRs as the modification is due to a restructuring where the effective interest rate on the debt is reduced to reflect a decrease in market interest rates. Non accrual loans. Loans are placed on nonaccrual status when, in the judgment of management, the probability of collection of interest is deemed to be insufficient to warrant further accrual. When a loan is placed on nonaccrual status, previously accrued but unpaid interest is deducted from interest income. The Bank does not accrue interest on loans 90 days or more past due. If payment is made on a loan so that the loan becomes less than 90 days past due, and the Bank expects full collection of principal and interest, the loan is returned to full accrual status. Any interest ultimately collected is credited to income in the period of recovery. A loan is charged-off when the loss is estimable and it is confirmed that the borrower is not expected be able to meet contractual obligations. If a consumer loan is on non-accrual status before becoming a TDR it will stay on non-accrual status following restructuring until it has been performing for at least six months , at which point it may be moved to accrual status. If a loan is on accrual status before it becomes a TDR, and management concludes that full repayment is probable based on internal evaluation, it will remain on accrual status following restructuring. If the restructured consumer loan does not perform, it is placed on non-accrual status when it is 90 days delinquent. For commercial loans, six consecutive payments on newly restructured loan terms are required prior to returning the loan to accrual status. In some instances after the required six consecutive payments are made management will conclude that collection of the entire principal and interest due is still in doubt. In those instances, the loan will remain on non-accrual. Impaired loans. Impaired loans consist of loans receivable that are not expected to have their principal and interest repaid in accordance with their contractual terms. This includes TDRs that are on non-accrual status. Collateral dependent impaired loans are measured using the fair value of the collateral less selling costs. Non-collateral dependent loans are measured at the present value of expected future cash flows. Deferred fees and discounts on loans. Loan discounts and loan fees are deferred and recognized over the life of the loans using the effective interest method. Allowance for Loan Losses. The Bank maintains an allowance for loan losses to absorb losses inherent in the loan portfolio. The allowance is based on ongoing, quarterly assessments of the probable and estimable losses inherent in the loan portfolio. The Bank's general methodology for assessing the appropriateness of the allowance is to apply a loss percentage factor to the different loan types. The loss percentage factor is made up of two parts - the historical loss factor (“HLF”) and the qualitative loss factor (“QLF”). The HLF takes into account historical charge-offs by loan type. The Bank uses an average of historical loss rates for each loan category multiplied by a loss emergence period. This is the likely period of time during which a residential or commercial loan borrower experiencing financial difficulties might deplete their cash prior to becoming delinquent on their loan, plus the period of time that it takes the bank to work out the loans. The QLF are based on management's continuing evaluation of the pertinent factors underlying the quality of the loan portfolio, including changes in the size and composition of the loan portfolio, actual loan loss experience, current economic conditions, collateral values, geographic concentrations, seasoning of the loan portfolio, specific industry conditions, and the duration of the current business cycle. These factors are considered by loan type. Specific allowances are established for loans which are individually evaluated, in cases where management has identified significant conditions or circumstances related to a loan that management believes indicate the probability that a loss has been incurred. The Bank has also established a reserve for unfunded commitments. The recovery of the carrying value of loans is susceptible to future market conditions beyond the Bank's control, which may result in losses or recoveries differing from those estimated. Acquired credit impaired loans. Acquired credit impaired loans are accounted for under Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 310-30 when there is evidence of credit deterioration since origination and for which it is probable, at acquisition, that the Company would be unable to collect all contractually required payments. Interest income, through accretion of the difference between the carrying amount of the loans and the expected cash flows, are recognized on all acquired loans. Covered assets. Covered loans consist of single family loans acquired from Horizon Bank in 2010 and certain loans acquired from SVBT in fiscal 2013 that were originally recorded at their estimated fair value at the time acquired. Loans that were classified as non-performing loans by Horizon Bank and SVBT are no longer classified as non-performing because, at acquisition, the carrying value of these loans was adjusted to reflect fair value and are covered under the FDIC loss sharing agreements. Management believes that the book value reflects an amount that will ultimately be collected. Covered real estate held for sale represents the foreclosed properties that were originally Horizon Bank loans or certain SVBT loans. Covered real estate held for sale is carried at the estimated fair value of the repossessed real estate. The covered loans and covered real estate held for sale are collectively referred to as “covered assets." When FDIC loss share agreements expire, any remaining loans will be transferred to the non covered portfolio. FDIC indemnification asset. FDIC indemnification asset of $16,275,000 as of September 30, 2015 is the receivable recorded due to the guarantee provided by the FDIC on the covered assets. This asset declines due to collections from the FDIC on claims or the eventual expiration of the FDIC loss share agreements. The FDIC indemnification asset is included within other assets on the statement of financial condition.
Client derivatives, long term borrowing hedges, and commercial loan hedge	Client Derivatives. Interest rate swap agreements are provided to certain clients who desire to convert their obligations from variable to fixed interest rates. Under these agreements, the Bank enters into a variable-rate loan agreement with a customer in addition to a swap agreement, and then enters into a corresponding swap agreement with a third party in order to offset its exposure on the customer swap agreement. As the interest rate swap agreements with the customers and third parties are not designated as hedges under FASB ASC 815, Derivatives and Hedging, the instruments are marked to market in earnings. The change in fair value of the offsetting swaps are included in interest income and interest expense and there is no impact on net income. There is fee income earned on the swaps that is included in miscellaneous loan income. Long Term Borrowing Hedges. The Bank has entered into forward-starting interest rate swaps to convert a series of future short-term borrowings to fixed rate payments. These interest rate swaps qualify as cash flow hedging instruments under ASC 815 which provides for matching of the recognition of gains and losses of the interest rate swaps and the hedged items. Prior to the starting date, the change in the fair value of the interest rate swap is recorded in Other Comprehensive Income. Commercial Loan Hedge. The Bank has entered into an interest rate swap to hedge a long term fixed rate commercial loan. This interest rate swap qualifies as a fair value hedge under ASC 815 which provides for matching of the recognition of the gains and losses of the interest rate swap and the hedged item.
Premises and equipment	Premises and equipment. Premises and equipment are stated at cost, less accumulated depreciation. Depreciation is computed on the straight-line method over the estimated useful lives of the respective assets. Expenditures are capitalized for betterments and major renewals. Charges for ordinary maintenance and repairs are expensed to operations as incurred.
Real estate owned	Real estate owned. Properties acquired in settlement of loans are recorded at fair value less selling costs. Subsequent accounting is recorded at lower of cost or fair value. These gains (losses) are shown on the real estate acquired through foreclosure line item.
Intangible assets	Intangible assets. Goodwill represents the excess of the cost of businesses acquired over the fair value of the net assets acquired. The core deposit intangibles are acquired assets that lack physical substance but can be distinguished from goodwill. Goodwill is evaluated for impairment on an annual basis. Other intangible assets are amortized over their estimated lives and are subject to impairment testing when events or circumstances change. If circumstances indicate that the carrying value of the assets may not be recoverable, an impairment charge could be recorded. No impairment of intangible assets has ever been identified. The Bank amortizes the core deposit intangibles over their estimated lives using an accelerated method.
Income taxes	Income taxes. Income taxes are accounted for using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, a deferred tax asset or liability is determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The provision for income taxes includes current and deferred income tax expense based on net income adjusted for temporary and permanent differences such as depreciation, interest on state and municipal securities, and affordable housing tax credits. Income tax related interest and penalties, if applicable, and amortization of affordable housing tax credit investments are recorded within income tax expense.
Accounting for stock-based compensation	Accounting for stock-based compensation. We recognize in the statement of operations the grant-date fair value of stock options and other equity-based forms of compensation issued to employees over the employees' requisite service period (generally the vesting period). The requisite service period may be subject to performance conditions. Stock options and restricted stock awards generally vest ratably over three to ten years and are recognized as expense over that same period of time. The exercise price of each option equals the market price of the Company's common stock on the date of the grant, and the maximum term is ten years. The fair value of each grant is estimated as of the grant date using the Black-Scholes option-pricing model or a Monte Carlo simulation pricing model. Expected volatility is based on the historical volatility of the price of the Company's common stock. The Company uses historical data to estimate option exercise and stock option forfeiture rates within the valuation model. The expected term of options granted is determined based on historical experience with similar options, giving consideration to the contractual terms and vesting schedules, and represents the period of time that options granted are expected to be outstanding. The expected dividend yield is based on dividend trends and the market value of the Company's common stock at the time of grant. The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant corresponding to the estimated expected term of the options granted. Stock options that were not dilutive but were outstanding as of September 30, 2015 , 2014 and 2013 were 94,054 , 90,846 and 435,825 , respectively. See Note L for additional information. Restricted stock unit grants and certain restricted stock awards are subject to performance-based and market-based vesting as well as other approved vesting conditions and cliff vest based on those conditions. Compensation expense is recognized over the service period to the extent restricted stock units are expected to vest.
Use of estimates	Use of estimates. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates reported in the financial statements include the allowance for loan losses, intangible assets, deferred taxes and contingent liabilities. Actual results could differ from these estimates.
New accounting pronouncements	New accounting pronouncements. In January 2014, the FASB issued ASU 2014-04, Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40) - Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. The new guidance clarifies that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either: (a) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure; or (b) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. ASU 2014-04 is effective for annual and interim reporting periods within those annual periods, beginning after December 15, 2014. Adoption of the new guidance is not expected to have a significant impact on the Company's consolidated financial statements. In January 2014, the FASB issued ASU 2014-01, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. This new guidance permits reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). Those not electing the proportional amortization method would account for the investment using the equity method or cost method. This new guidance is effective on a retrospective basis beginning after December 15, 2014 with early adoption permitted. The Company adopted this ASU prospectively as of December 31, 2013 as the retrospective adjustments were not material. This adoption did not have a material impact on the Company's consolidated financial statements. In June 2014, the FASB issued ASU 2014-11, Transfers and Servicing (Topic 860) - Repurchase to Maturity Transactions, Repurchase Financings, and Disclosures. Under this new accounting guidance, repurchase-to-maturity transactions will be accounted for as secured borrowings rather than sales of an asset, and transfers of financial assets with contemporaneous repurchase financings will no longer be evaluated to determine whether they should be accounted for on a combined basis as forward contracts. The new guidance also prescribes additional disclosures particularly on the nature of collateral pledged in repurchase financings accounted for as secured borrowings. The new guidance is effective for the first interim or annual period beginning after December 31, 2014. This guidance did not have a material impact on the Company's consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. These amendments require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. These amendments are effective for interim and annual periods beginning after December 15, 2015. Early adoption is permitted. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In August 2015, the FASB issued ASU 2015-14, to defer the effective date of ASU 2014-09 , Revenue from Contracts with Customers (Topic 606). This new accounting guidance clarifies the principles for recognizing revenue from contracts with customers. The new accounting guidance, which does not apply to financial instruments, is effective on a retrospective basis beginning on January 1, 2018. The Company does not expect the new guidance to have a material impact on its consolidated financial statements. In August 2015, the FASB issued ASU 2015-16, Business Combinations (Topic 805): Simplifying the Accounting Measurement -Period Adjustments. To simplify the accounting for adjustments made to provisional amounts recognized in a business combination, the amendments eliminate the requirement to retrospectively account for those adjustments. These amendments are effective for interim and annual periods beginning after December 15, 2015. The amendments should be applied prospectively. The Company does not expect this guidance to have a material impact on its consolidated financial statements.
Business segments	Business segments. As the Company manages its business and operations on a consolidated basis, management has determined that there is one reportable business segment.

Summary of Significant Accoun26

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Schedule of goodwill and intangible assets	The balance of the Company's intangible assets was as follows: Goodwill Core Deposit Intangible Total (In thousands) Balance at September 30, 2013 $ 260,277 $ 4,041 $ 264,318 Additions 31,226 11,040 42,266 Amortization — (3,675 ) (3,675 ) Balance at September 30, 2014 291,503 11,406 302,909 Additions — — — Amortization — (3,551 ) (3,551 ) Balance at September 30, 2015 $ 291,503 $ 7,855 $ 299,358
Schedule of future amortization expense	The table below presents the estimated core deposit intangible asset amortization expense for the next five years: Year End Expense (In thousands) 2016 $ 2,314 2017 1,607 2018 1,208 2019 1,254 2020 1,254

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Investments by contractual maturity date	September 30, 2015 Amortized Cost Gross Unrealized Fair Value Yield Gains Losses (In thousands) Available-for-sale securities U.S. government and agency securities due 1 to 5 years $ 105,065 $ 1,923 $ (274 ) $ 106,714 1.74 % 5 to 10 years 119,071 35 (1,247 ) 117,859 1.54 % Over 10 years 262,832 — (4,941 ) 257,891 1.23 % Equity Securities Within 1 year 500 17 — 517 1.80 % 1 to 5 years 99,922 1,513 — 101,435 1.90 % 5 to 10 years — — — — — % Corporate bonds due Within 1 year 24,787 191 — 24,978 0.53 % 1 to 5 years 311,435 1,190 (58 ) 312,567 0.88 % 5 to 10 years 100,000 876 (3,524 ) 97,352 1.47 % Over 10 years 69,950 953 — 70,903 3.00 % Municipal bonds due 1 to 5 years 2,285 8 — 2,293 1.23 % 5 to 10 years 1,303 7 — 1,310 2.05 % Over 10 years 20,382 3,138 — 23,520 6.45 % Mortgage-backed securities Agency pass-through certificates 1,144,787 18,222 (2,491 ) 1,160,518 2.48 % Other commercial MBS 103,131 85 (510 ) 102,706 1.51 % 2,365,450 28,158 (13,045 ) 2,380,563 1.97 % Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 1,643,216 10,516 (16,312 ) 1,637,420 3.19 % 1,643,216 10,516 (16,312 ) 1,637,420 3.19 % $ 4,008,666 $ 38,674 $ (29,357 ) $ 4,017,983 2.46 % September 30, 2014 Amortized Cost Gross Unrealized Fair Value Yield Gains Losses (In thousands) Available-for-sale securities U.S. government and agency securities due 1 to 5 years $ 171,154 $ 2,585 $ (748 ) $ 172,991 1.26 % 5 to 10 years 203,317 300 (102 ) 203,515 1.45 % Over 10 years 354,828 1,028 (419 ) 355,437 1.25 % Equity Securities Within 1 year 1 to 5 years 100,500 887 — 101,387 1.90 % 5 to 10 years — — — — % Corporate bonds due Within 1 year 15,000 75 — 15,075 1.00 % 1 to 5 years 302,540 2,372 — 304,912 0.71 % 5 to 10 years 138,201 1,789 (970 ) 139,020 1.43 % Over 10 years 50,000 — — 50,000 3.00 % Municipal bonds due 1 to 5 years — — — — — % 5 to 10 years — — — — — % Over 10 years 20,402 3,279 — 23,681 6.45 % Mortgage-backed securities Agency pass-through certificates 1,561,639 24,893 (2,024 ) 1,584,508 2.57 % Other commercial MBS 98,851 65 — 98,916 1.49 % 3,016,432 37,273 (4,263 ) 3,049,442 1.99 % Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 1,548,265 4,855 (53,902 ) 1,499,218 3.13 % 1,548,265 4,855 (53,902 ) 1,499,218 3.13 % $ 4,564,697 $ 42,128 $ (58,165 ) $ 4,548,660 2.38 %
Schedule of unrealized losses and fair value of securities	The following table shows the gross unrealized losses and fair value of securities at September 30, 2015 and September 30, 2014 , by length of time that individual securities in each category have been in a continuous loss position. The Bank had $1,297,408,000 securities in a continuous loss position for 12 or more months at September 30, 2015 , and $1,642,718,000 securities in a continuous loss position for 12 or more months at September 30, 2014 , which consisted of corporate bonds, U.S. government and agency securities, and mortgage-backed securities. Management believes that the declines in fair value of these investments are not an other than temporary impairment as these losses are due to a change in interest rates rather than any credit deterioration. The impairment is also deemed to be temporary because: 1) the Bank does not intend to sell the security, and 2) it is not more likely than not that it will be required to sell the security before recovery of the entire amortized cost basis of the security. As of September 30, 2015 Less than 12 months 12 months or more Total Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value (In thousands) Corporate Bonds $ (183 ) $ 72,862 $ (3,399 ) $ 46,601 $ (3,582 ) $ 119,463 U.S. agency securities (5,010 ) 336,243 (1,452 ) 57,344 (6,462 ) 393,587 Agency pass-through certificates (1,036 ) 169,541 (18,277 ) 1,193,463 (19,313 ) 1,363,004 $ (6,229 ) $ 578,646 $ (23,128 ) $ 1,297,408 $ (29,357 ) $ 1,876,054 As of September 30, 2014 Less than 12 months 12 months or more Total Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value (In thousands) Corporate Bonds $ (125 ) $ 24,875 $ (845 ) $ 24,155 $ (970 ) $ 49,030 U.S. agency securities (472 ) 316,578 (797 ) 109,354 (1,269 ) 425,932 Agency pass-through certificates (215 ) 19,212 (55,711 ) 1,509,209 (55,926 ) 1,528,421 $ (812 ) $ 360,665 $ (57,353 ) $ 1,642,718 $ (58,165 ) $ 2,003,383

Loans Receivable (including C28

Loans Receivable (including Covered Loans) (Tables)	12 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Schedule of loans receivable (excluding covered loans)	September 30, 2015 September 30, 2014 (In thousands) (In thousands) Non-Acquired loans Single-family residential $ 5,651,845 57.6 % $ 5,560,203 62.6 % Construction - speculative 200,509 2.0 140,060 1.6 Construction - custom 396,307 4.0 385,824 4.3 Land - acquisition & development 94,208 1.0 77,832 0.9 Land - consumer lot loans 103,989 1.1 108,623 1.2 Multi-family 1,125,722 11.6 917,286 10.3 Commercial real estate 986,270 10.0 591,336 6.7 Commercial & industrial 612,836 6.2 379,226 4.3 HELOC 127,646 1.3 116,042 1.3 Consumer 194,655 2.0 132,590 1.5 Total non-acquired loans 9,493,987 96.8 % 8,409,022 94.7 % Acquired loans 166,293 1.6 184,188 2.0 Credit impaired acquired loans 87,081 0.9 76,507 0.8 Covered loans 75,909 0.7 213,203 2.5 Total gross loans 9,823,270 100.0 % 8,882,920 100.0 % Less: Allowance for probable losses 106,829 114,591 Loans in process 476,796 346,172 Discount on acquired loans 30,095 59,874 Deferred net origination fees 38,916 37,485 Total loan contra accounts 652,636 558,122 Net Loans $ 9,170,634 $ 8,324,798
Schedule of fixed and adjustable rate loans	The Company originates fixed and adjustable interest rate loans, which at September 30, 2015 consisted of the following: Fixed-Rate Adjustable-Rate Term To Maturity Book Value Term To Rate Adjustment Book Value (In thousands) (In thousands) Within 1 year $ 343,801 Less than 1 year $ 1,778,466 1 to 3 years 160,832 1 to 3 years 799,633 3 to 5 years 97,837 3 to 5 years 733,061 5 to 10 years 155,708 5 to 10 years 92,796 10 to 20 years 938,938 10 to 20 years — Over 20 years 4,722,198 Over 20 years — $ 6,419,314 $ 3,403,956
Schedule of loans receivable by geographic area	Gross loans by geographic concentration were as follows: September 30, 2015 Single - Multi- Land - Land - Construction - custom Construction - speculative Commercial Commercial Consumer HELOC Total (In thousands) Washington $ 2,905,256 $ 388,151 $ 54,467 $ 62,916 $ 232,244 $ 84,462 $ 638,974 $ 350,485 $ 74,649 $ 89,011 $ 4,880,615 Oregon 734,368 328,103 8,493 18,212 37,781 34,952 223,625 130,743 3,327 14,539 1,534,143 Arizona 154,858 411 — — — — 5,594 42,437 117,982 — 321,282 Other 312,471 34,502 4,235 8,098 17,107 13,634 7,566 11,183 165 6,204 415,165 Utah 579,743 233,240 4,573 9,227 39,443 8,542 116,157 40,754 297 18,619 1,050,595 Idaho 492,297 55,562 2,187 3,566 33,292 6,856 37,109 33,869 24 7,544 672,306 New Mexico 193,387 72,729 12,348 2,714 20,744 15,666 132,974 10,880 935 12,697 475,074 Texas 189,355 15,446 11,979 261 8,882 36,396 21,755 19,114 33 — 303,221 Nevada 139,047 1,293 — 1,819 6,816 — 2,797 18,115 69 913 170,869 $ 5,700,782 $ 1,129,437 $ 98,282 $ 106,813 $ 396,309 $ 200,508 $ 1,186,551 $ 657,580 $ 197,481 $ 149,527 $ 9,823,270 Percentage by geographic area September 30, 2015 Single - Multi- Land - Land - Construction - custom Construction - speculative Commercial Commercial Consumer HELOC Total As % of total gross loans Washington 29.4 % 4.0 % 0.6 % 0.6 % 2.4 % 0.9 % 6.5 % 3.6 % 0.8 % 0.9 % 49.7 % Oregon 7.5 3.3 0.1 0.2 0.4 0.4 2.3 1.3 — 0.1 15.6 Arizona 1.6 — — — — — 0.1 0.4 1.2 — 3.3 Other 3.2 0.4 — 0.1 0.2 0.1 0.1 0.1 — 0.1 4.3 Utah 5.9 2.4 — 0.1 0.4 0.1 1.2 0.4 — 0.2 10.7 Idaho 5.0 0.6 — — 0.3 0.1 0.4 0.3 — 0.1 6.8 New Mexico 2.0 0.7 0.1 — 0.2 0.2 1.4 0.1 — 0.1 4.8 Texas 1.9 0.2 0.1 — 0.1 0.4 0.2 0.2 — — 3.1 Nevada 1.4 — — — 0.1 — — 0.2 — — 1.7 57.9 % 11.6 % 0.9 % 1.0 % 4.1 % 2.2 % 12.2 % 6.6 % 2.0 % 1.5 % 100.0 % Percentage by geographic area as a % of each loan type September 30, 2015 Single - Multi- Land - Land - Construction - custom Construction - speculative Commercial Commercial Consumer HELOC As % of total gross loans Washington 51.0 % 34.3 % 55.4 % 59.0 % 58.7 % 42.1 % 54.0 % 53.1 % 37.8 % 59.6 % Oregon 12.9 29.1 8.6 17.1 9.5 17.4 18.8 19.9 1.7 9.7 Arizona 2.7 — — — — — 0.5 6.5 59.7 — Other 5.5 3.1 4.3 7.6 4.3 6.8 0.6 1.7 0.1 4.1 Utah 10.2 20.7 4.7 8.6 10.0 4.3 9.8 6.2 0.2 12.5 Idaho 8.6 4.9 2.2 3.3 8.4 3.4 3.1 5.2 — 5.0 New Mexico 3.4 6.4 12.6 2.5 5.2 7.8 11.2 1.7 0.5 8.5 Texas 3.3 1.4 12.2 0.2 2.2 18.2 1.8 2.9 — — Nevada 2.4 0.1 — 1.7 1.7 — 0.2 2.8 — 0.6 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 %
Schedule of impaired loans, loan commitments and loans serviced	The following table provides additional information on impaired loans, loan commitments and loans serviced for others: September 30, 2015 September 30, 2014 (In thousands) Recorded investment in impaired loans $ 341,579 $ 435,185 Troubled Debt Restructuring included in impaired loans 302,713 374,743 Impaired loans with allocated reserves 2,323 196 Reserves on impaired loans 275 60 Average balance of impaired loans 333,815 403,138 Interest income from impaired loans 14,855 21,674 Outstanding fixed-rate origination commitments 230,869 198,504 Loans serviced for others 72,083 86,745
Non accrual loans held by the company	The following table sets forth information regarding non-accrual loans held by the Company: September 30, 2015 September 30, 2014 (In thousands) (In thousands) Non-accrual loans: Single-family residential $ 59,074 87.1 % $ 74,067 84.8 % Construction - speculative 754 1.1 1,477 1.7 Construction - custom 732 1.1 — — Land - acquisition & development — — 811 0.9 Land - consumer lot loans 1,273 1.9 2,637 3.0 Multi-family 2,558 3.8 1,742 2.0 Commercial real estate 2,176 3.2 5,106 5.8 Commercial & industrial — 7 — HELOC 563 0.8 795 0.9 Consumer 680 1.0 789 0.9 Total non-accrual loans $ 67,810 100 % $ 87,431 100 %
Aging of past due loans	The following tables provide an analysis of the age of loans in past due status: September 30, 2015 Amount of Loans Days Delinquent Based on $ Amount of Loans % based on $ Type of Loan Net of LIP & Chg.-Offs Current 30 60 90 Total (In thousands) Non-acquired loans Single-Family Residential $ 5,655,928 $ 5,590,673 $ 17,305 $ 7,757 $ 40,193 $ 65,255 1.15 % Construction - Speculative 130,121 130,121 — — — — — Construction - Custom 205,692 204,168 791 270 463 1,524 0.74 Land - Acquisition & Development 75,661 74,737 406 — 518 924 1.22 Land - Consumer Lot Loans 104,494 102,045 689 399 1,361 2,449 2.34 Multi-Family 1,068,038 1,065,667 259 454 1,658 2,371 0.22 Commercial Real Estate 893,072 892,180 131 — 761 892 0.10 Commercial & Industrial 617,545 616,602 93 27 823 943 0.15 HELOC 127,648 127,196 174 27 251 452 0.35 Consumer 194,977 194,259 493 170 55 718 0.37 9,073,176 8,997,648 20,341 9,104 46,083 75,528 0.83 Acquired loans 57,682 56,559 356 — 767 1,123 1.95 Credit impaired acquired loans 139,726 138,940 243 4 539 786 0.56 Covered loans 75,890 70,729 272 90 4,799 5,161 6.80 Total Loans $ 9,346,474 $ 9,263,876 $ 21,212 $ 9,198 $ 52,188 $ 82,598 0.88 % Delinquency % 99.12% 0.23% 0.10% 0.56% 0.88%
Schedule of loan modifications	The following tables provides information related troubled debt restructured: September 30, 2015 September 30, 2014 Pre-Modification Post-Modification Pre-Modification Post-Modification Outstanding Outstanding Outstanding Outstanding Number of Recorded Recorded Number of Recorded Recorded Troubled Debt Restructurings: Contracts Investment Investment Contracts Investment Investment (In thousands) (In thousands) Single-Family Residential 62 $ 13,378 $ 13,378 241 $ 52,900 $ 52,900 Construction - Speculative 2 701 701 — — — Construction - Custom — — — — — — Land - Acquisition & Development — — — 3 631 631 Land - Consumer Lot Loans 9 1,546 1,546 13 2,315 2,315 Multi-Family 3 — — 2 1,196 1,196 Commercial Real Estate 1 3,175 3,175 3 2,177 2,177 Commercial & Industrial 1 — — — — — HELOC — 50 50 2 549 549 Consumer — 80 80 3 35 35 78 $ 18,930 $ 18,930 267 $ 59,803 $ 59,803 September 30, 2015 September 30, 2014 Number of Recorded Number of Recorded Troubled Debt Restructurings That Subsequently Defaulted: Contracts Investment Contracts Investment (In thousands) (In thousands) Single-Family Residential 18 $ 2,917 38 $ 7,427 Construction - Speculative — — — — Construction - Custom — — — — Land - Acquisition & Development — — — — Land - Consumer Lot Loans 2 301 8 969 Multi-Family — — — — Commercial Real Estate — — — — Commercial & Industrial — — — — HELOC — — — — Consumer — — — — 20 $ 3,218 46 $ 8,396
Schedule of changes in the accretable yield for credit impaired acquired loans	The following table shows the changes in accretable yield for acquired impaired loans and acquired non-impaired loans including covered loans for the years ended September 30, 2015 and 2014 : September 30, 2015 September 30, 2014 Acquired Impaired Acquired Non-impaired Acquired Impaired Acquired Non-impaired Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans Accretable Yield Carrying Amount of Loans (In thousands) (In thousands) Beginning balance $ 97,125 $ 135,826 $ 14,513 $ 275,862 $ 115,513 $ 207,809 $ 22,240 $ 403,229 Additions — — — — — — — — Net reclassification from nonaccretable 6,307 — 346 — 17,486 (2,069 ) — — Accretion (30,727 ) 30,727 (7,655 ) 7,655 (35,874 ) 35,874 (7,727 ) 7,727 Transfers to REO — (2,975 ) — (150 ) — (10,131 ) — (4,710 ) Payments received, net — (52,278 ) — (96,287 ) — (95,657 ) — (130,384 ) Ending Balance $ 72,705 $ 111,300 $ 7,204 $ 187,080 $ 97,125 $ 135,826 $ 14,513 $ 275,862
Schedule of activity for FDIC indemnification asset	The following table shows the year to date activity for the FDIC indemnification asset: September 30, September 30, 2014 (In thousands) Balance at beginning of period $ 36,860 $ 64,615 Additions (1,795 ) 1,795 Payments received (720 ) (2,502 ) Amortization (18,588 ) (27,850 ) Accretion 518 802 Balance at end of period $ 16,275 $ 36,860

Allowance for Losses on Loans (

Allowance for Losses on Loans (Tables)	12 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Summary of activity in allowance for loan losses	The following table summarizes the activity in the allowance for loan losses for the twelve months ended September 30, 2015 and 2014 : September 30, 2015 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 62,763 $ (5,524 ) $ 13,403 $ (23,295 ) $ 47,347 Construction - speculative 6,742 (388 ) 120 206 6,680 Construction - custom 1,695 — — (705 ) 990 Land - acquisition & development 5,592 (38 ) 207 20 5,781 Land - consumer lot loans 3,077 (459 ) 221 107 2,946 Multi-family 4,248 — 220 836 5,304 Commercial real estate 7,548 (1,711 ) 735 2,388 8,960 Commercial & industrial 16,527 (3,354 ) 1,374 10,433 24,980 HELOC 928 (66 ) 2 38 902 Consumer 3,227 (3,060 ) 3,688 (916 ) 2,939 Covered loans 2,244 — — (2,244 ) — $ 114,591 $ (14,600 ) $ 19,970 $ (13,132 ) $ 106,829 September 30, 2014 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 64,184 $ (8,529 ) $ 17,684 $ (10,576 ) $ 62,763 Construction - speculative 8,407 (949 ) 97 (813 ) 6,742 Construction - custom 882 — — 813 1,695 Land - acquisition & development 9,165 (541 ) 3,071 (6,103 ) 5,592 Land - consumer lot loans 3,552 (658 ) 22 161 3,077 Multi-family 3,816 — — 432 4,248 Commercial real estate 5,595 (105 ) 33 2,025 7,548 Commercial & industrial 16,614 (826 ) 5,043 (4,304 ) 16,527 HELOC 1,002 (48 ) — (26 ) 928 Consumer 3,524 (3,443 ) 3,513 (367 ) 3,227 Covered loans — — — 2,244 2,244 $ 116,741 $ (15,099 ) $ 29,463 $ (16,514 ) $ 114,591
Summary of loans collectively and individually evaluated for impairment and related allocation of reserves	The following tables show a summary of loans collectively and individually evaluated for impairment and the related allocation of general and specific reserves as of September 30, 2015 and 2014 : September 30, 2015 Loans Collectively Evaluated for Impairment Loans Individually Evaluated for Impairment General Reserve Allocation Gross Loans Subject to General Reserve (1) Ratio Specific Reserve Allocation Gross Loans Subject to Specific Reserve (1) Ratio (In thousands) (In thousands) Single-family residential $ 47,073 $ 5,595,752 0.8 % $ 275 $ 51,718 0.5 % Construction - speculative 6,680 124,679 5.4 — 5,441 — Construction - custom 990 205,692 0.5 — — — Land - acquisition & development 5,781 72,602 8.0 — 2,198 — Land - consumer lot loans 2,946 93,103 3.2 — 10,824 — Multi-family 5,304 1,062,194 0.5 — 5,348 — Commercial real estate 8,960 844,691 1.1 — 8,826 — Commercial & industrial 24,980 643,577 3.9 — — — HELOC 902 126,594 0.7 — 1,072 — Consumer 2,938 194,569 1.5 — 86 — $ 106,554 $ 8,963,453 1.2 % $ 275 $ 85,513 0.3 % ___________________ (1) Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans September 30, 2014 Loans Collectively Evaluated for Impairment Loans Individually Evaluated for Impairment General Reserve Allocation Gross Loans Subject to General Reserve (1) Ratio Specific Reserve Allocation Gross Loans Subject to Specific Reserve (1) Ratio (In thousands) (In thousands) Single-family residential $ 62,067 $ 5,487,331 1.1 % $ — $ 72,869 — % Construction - speculative 6,682 130,901 5.5 60 9,159 0.7 Construction - custom 1,695 385,464 0.5 — 360 — Land - acquisition & development 5,592 73,999 7.6 — 3,833 — Land - consumer lot loans 3,077 95,684 3.2 — 12,939 — Multi-family 4,248 911,162 0.5 — 6,124 — Commercial real estate 7,548 563,534 1.4 — 27,802 — Commercial & industrial 17,223 421,816 4.6 — — — HELOC 928 114,393 0.9 — 1,650 — Consumer 3,227 132,590 2.4 — — — $ 112,287 $ 8,316,874 1.4 % $ 60 $ 134,736 — % ___________________ (1) Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans
Summary of loans based on credit quality indicators	The following tables provide information on loans based on credit quality indicators (defined above) as of September 30, 2015 and 2014 : September 30, 2015 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,558,700 $ — $ 93,145 $ — $ — $ 5,651,845 Construction - speculative 197,935 — 2,574 — — 200,509 Construction - custom 396,307 — — — — 396,307 Land - acquisition & development 89,656 — 4,552 — — 94,208 Land - consumer lot loans 103,569 — 420 — — 103,989 Multi-family 1,118,673 865 6,184 — — 1,125,722 Commercial real estate 971,510 4,360 10,400 — — 986,270 Commercial & industrial 575,034 1,496 36,306 — — 612,836 HELOC 127,398 — 248 — — 127,646 Consumer 194,451 — 204 — — 194,655 Total Non-acquired loans 9,333,233 6,721 154,033 — — 9,493,987 Acquired loans $ 149,891 — 16,402 — — 166,293 Credit impaired acquired loans 61,019 — 26,062 — — 87,081 Covered loans $ 61,776 $ — $ 14,133 $ — $ — 75,909 Total gross loans $ 9,605,919 $ 6,721 $ 210,630 $ — $ — $ 9,823,270 Total grade as a % of total gross loans 97.8 % 0.1 % 2.1 % — % — % September 30, 2014 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,426,895 $ 2,793 $ 130,515 $ — $ — $ 5,560,203 Construction - speculative 134,950 — 5,110 — — 140,060 Construction - custom 385,824 — — — — 385,824 Land - acquisition & development 71,692 — 6,140 — — 77,832 Land - consumer lot loans 108,013 — 610 — — 108,623 Multi-family 912,728 — 4,558 — — 917,286 Commercial real estate 557,914 1,971 31,451 — — 591,336 Commercial & industrial 359,221 14,740 5,265 — — 379,226 HELOC 115,794 — 248 — — 116,042 Consumer 132,349 — 241 — — 132,590 Total Non-acquired loans 8,205,380 19,504 184,138 — — 8,409,022 Acquired loans 156,954 16,213 10,963 58 — 184,188 Credit impaired acquired loans 61,332 2,143 13,032 — — 76,507 Covered loans $ 135,134 $ 815 $ 76,729 $ 525 — 213,203 Total gross loans $ 8,558,800 $ 38,675 $ 284,862 $ 583 $ — $ 8,882,920 Total grade as a % of total gross loans 96.4 % 0.4 % 3.2 % — % — %
Schedule of Credit Risk Profile by Payment Activity	The following tables provide information on non-acquired loans based on payment activity as of September 30, 2015 and 2014 : September 30, 2015 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) (In thousands) Single-family residential $ 5,592,771 99.0 % $ 59,074 1.0 % Construction - speculative 199,755 99.6 754 0.4 Construction - custom 395,575 99.8 732 0.2 Land - acquisition & development 94,208 100.0 — — Land - consumer lot loans 102,716 98.8 1,273 1.2 Multi-family 1,123,165 99.8 2,558 0.2 Commercial real estate 984,093 99.8 2,176 0.2 Commercial & industrial 612,836 100.0 — — HELOC 127,083 99.6 563 0.4 Consumer 193,975 99.7 680 0.3 $ 9,426,177 99.3 % $ 67,810 0.7 % September 30, 2014 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) (In thousands) Single-family residential $ 5,486,136 98.7 % $ 74,067 1.3 % Construction - speculative 138,583 98.9 1,477 1.1 Construction - custom 385,824 100.0 — — Land - acquisition & development 77,021 99.0 811 1.0 Land - consumer lot loans 105,986 97.6 2,637 2.4 Multi-family 915,544 99.8 1,742 0.2 Commercial real estate 586,230 99.1 5,106 0.9 Commercial & industrial 379,219 100.0 7 — HELOC 115,247 99.3 795 0.7 Consumer 131,801 99.4 789 0.6 $ 8,321,591 99.0 % $ 87,431 1.0 %
Summary of impaired loans based on type	The following tables provide information on impaired loans based on loan types as of September 30, 2015 and 2014 : September 30, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) With no related allowance recorded: Single-family residential $ 17,250 $ 19,644 $ — $ 14,069 Construction - speculative 453 2,151 — 471 Construction - custom 554 554 — 182 Land - acquisition & development 2,570 9,426 — 926 Land - consumer lot loans 727 814 — 544 Multi-family 3,770 7,054 — 1,545 Commercial real estate 9,427 15,620 — 8,130 Commercial & industrial 2,955 13,066 — 2,681 HELOC 683 1,532 — 536 Consumer 477 703 — 390 38,866 70,564 — 29,474 With an allowance recorded: Single-family residential 259,461 263,268 6,678 260,028 Construction - speculative 4,988 5,778 — 5,432 Construction - custom — — — — Land - acquisition & development 2,486 3,426 — 3,478 Land - consumer lot loans 11,289 11,554 — 11,324 Multi-family 3,823 3,823 — 3,732 Commercial real estate 19,124 21,078 — 18,886 Commercial & industrial — — — — HELOC 1,443 1,443 — 1,359 Consumer 99 289 — 102 302,713 310,659 6,678 (1) 304,341 Total: Single-family residential 276,711 282,912 6,678 274,097 Construction - speculative 5,441 7,929 — 5,903 Construction - custom 554 554 — 182 Land - acquisition & development 5,056 12,852 — 4,404 Land - consumer lot loans 12,016 12,368 — 11,868 Multi-family 7,593 10,877 — 5,277 Commercial real estate 28,551 36,698 — 27,016 Commercial & industrial 2,955 13,066 — 2,681 HELOC 2,126 2,975 — 1,895 Consumer 576 992 — 492 $ 341,579 $ 381,223 $ 6,678 (1) $ 333,815 ____________________ (1) Includes $275,000 of specific reserves and $6,403,000 included in the general reserves. September 30, 2014 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) With no related allowance recorded: Single-family residential $ 24,044 $ 26,628 $ — $ 16,843 Construction - speculative 1,603 2,173 — 1,804 Construction - custom — — — — Land - acquisition & development 837 2,325 — 1,038 Land - consumer lot loans 974 1,072 — 713 Multi-family 1,111 1,111 — 327 Commercial real estate 13,234 20,085 — 11,720 Commercial & industrial 3,195 17,166 — 3,900 HELOC 1,019 1,730 — 612 Consumer 663 833 — 517 46,680 73,123 — 37,474 With an allowance recorded: Single-family residential 322,320 327,869 10,527 316,348 Construction - speculative 7,556 7,986 60 7,532 Construction - custom — — — — Land - acquisition & development 4,696 5,636 — 4,114 Land - consumer lot loans 13,002 13,385 — 12,858 Multi-family 5,243 5,463 — 4,957 Commercial real estate 34,159 35,028 — 18,572 Commercial & industrial — — — — HELOC 1,486 1,486 — 1,204 Consumer 43 214 — 79 388,505 397,067 10,587 (1) 365,664 Total: Single-family residential 346,364 354,497 10,527 333,191 Construction - speculative 9,159 10,159 60 9,336 Construction - custom — — — — Land - acquisition & development 5,533 7,961 — 5,152 Land - consumer lot loans 13,976 14,457 — 13,571 Multi-family 6,354 6,574 — 5,284 Commercial real estate 47,393 55,113 — 30,292 Commercial & industrial 3,195 17,166 — 3,900 HELOC 2,505 3,216 — 1,816 Consumer 706 1,047 — 596 $ 435,185 $ 470,190 $ 10,587 (1) $ 403,138 ____________________ (1) Includes $60,000 of specific reserves and $10,527,000 included in the general reserves.

Interest Receivable (Tables)

Interest Receivable (Tables)	12 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Schedule of interest receivable	September 30, 2015 2014 (In thousands) Loans receivable $ 30,930 $ 40,986 Mortgage-backed securities 6,695 7,427 Investment securities 2,804 3,624 $ 40,429 $ 52,037

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Sep. 30, 2015
Property, Plant and Equipment [Abstract]
Premises and Equipment	September 30, 2015 2014 Estimated Useful Life (In thousands) Land — $ 113,347 $ 113,353 Buildings 25 - 40 147,757 143,627 Leasehold improvements 7 - 15 10,193 8,547 Furniture, software and equipment 2 - 10 89,919 65,154 361,216 330,681 Less accumulated depreciation and amortization (84,969 ) (73,138 ) $ 276,247 $ 257,543

Customer Accounts (Tables)

Customer Accounts (Tables)	12 Months Ended
	Sep. 30, 2015
Banking and Thrift [Abstract]
Schedule of deposits	September 30, 2015 2014 (In thousands) Checking accounts, .15% and under $ 2,555,766 $ 2,331,170 Passbook and statement accounts, .10% and under 700,794 622,546 Insured money market accounts, .01% to .15% 2,564,318 2,536,971 Certificate accounts Less than 2.00% 4,303,475 4,524,158 2.00% to 2.99% 501,409 602,683 3.00% to 3.99% 5,156 98,610 4.00% to 4.99% 150 146 5.00% to 5.99% 635 644 Total certificates 4,810,825 5,226,241 $ 10,631,703 $ 10,716,928 Certificate maturities are as follows: September 30, 2015 2014 (In thousands) Within 1 year $ 2,862,313 $ 3,147,172 1 to 2 years 1,068,792 999,090 2 to 3 years 321,118 659,867 Over 3 years 558,602 420,112 $ 4,810,825 $ 5,226,241
Schedule of interest expense on customer deposits	Interest expense on customer accounts consisted of the following: Year ended September 30, 2015 2014 2013 (In thousands) Checking accounts $ 1,036 $ 1,259 $ 936 Passbook and statement accounts 660 607 566 Insured money market accounts 3,631 4,574 4,280 Certificate accounts 46,273 52,636 62,669 51,600 59,076 68,451 Less early withdrawal penalties (546 ) (552 ) (548 ) $ 51,054 $ 58,524 $ 67,903 Weighted average interest rate at end of year 0.48 % 0.51 % 0.69 % Weighted daily average interest rate during the year 0.48 % 0.57 % 0.75 %

FHLB Advances and Other Borro33

FHLB Advances and Other Borrowings (Tables)	12 Months Ended
	Sep. 30, 2015
Banking and Thrift [Abstract]
Advances	Maturity dates of FHLB advances were as follows: September 30, 2015 2014 (In thousands) FHLB advances Within 1 year $ 250,000 $ 100,000 1 to 3 years 750,000 700,000 4 to 5 years 430,000 730,000 More than 5 years 400,000 400,000 $ 1,830,000 $ 1,930,000
Weighted average cost and amount of advances	Financial data pertaining to the weighted-average cost and the amount of FHLB advances were as follows: September 30, 2015 2014 2013 (In thousands) Weighted average interest rate at end of year 3.35 % 3.52 % 3.52 % Weighted daily average interest rate during the year 3.57 % 3.56 % 3.57 % Daily average of FHLB advances $ 1,848,904 $ 1,955,205 $ 1,905,479 Maximum amount of FHLB advances at any month end $ 1,930,000 $ 2,205,000 $ 1,930,000 Interest expense during the year (excludes interest rate swap expense) $ 64,331 $ 68,307 $ 68,075

Derivative and Hedging Activiti

Derivative and Hedging Activities (Tables)	12 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair value of financial instruments by balance sheet grouping	The following table presents the fair value and balance sheet classification of derivatives at September 30, 2015 and September 30, 2014 : Asset Derivatives Liability Derivatives September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 (In thousands) Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Client derivatives Other assets $ 11,879 Other assets $ 2,611 Other liabilities $ 11,879 Other liabilities $ 2,611 Commercial loan hedge Other assets — Other assets — Other liabilities 966 Other liabilities — Long term borrowing hedge Other assets — Other assets — Other liabilities 14,555 Other liabilities 268 $ 11,879 $ 2,611 $ 27,400 $ 2,879 2015 2014 Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (In thousands) Financial assets Cash and cash equivalents 1 $ 284,049 $ 284,049 $ 781,843 $ 781,843 Available-for-sale securities: Equity securities 1 101,952 101,952 101,387 101,387 Obligations of U.S. government 2 482,464 482,464 731,943 731,943 Obligations of states and political subdivisions 2 27,123 27,123 23,681 23,681 Corporate debt securities 2 505,800 505,800 509,007 509,007 Mortgage-backed securities Agency pass-through certificates 2 1,160,518 1,160,518 1,584,508 1,584,508 Other commercial MBS 2 102,706 102,706 98,916 98,916 Total available-for-sale securities 2,380,563 2,380,563 3,049,442 3,049,442 Held-to-maturity securities: Mortgage-backed securities Agency pass-through certificates 2 1,643,216 1,637,420 1,548,265 1,499,218 Total held-to-maturity securities 1,643,216 1,637,420 1,548,265 1,499,218 Loans receivable 3 9,170,634 9,667,750 8,324,798 8,844,532 FDIC indemnification asset 3 16,275 15,522 36,860 35,976 FHLB and FRB stock 2 107,198 107,198 158,839 158,839 Other assets - interest rate contracts 2 11,879 11,879 2,611 2,611 Financial liabilities Customer accounts 2 10,631,703 10,004,290 10,716,928 9,946,586 FHLB advances and other borrowings 2 1,830,000 1,938,384 1,930,000 2,054,437 Other liabilities - interest rate contracts 2 11,879 11,879 2,611 2,611 Other liabilities - commercial loan hedge 2 966 966 — — Other liabilities - long term borrowing hedge 2 14,555 14,555 268 268

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Summary of major sources of temporary differences and deferred tax effects	The major sources of these temporary differences and their deferred tax effects were as follows: September 30, 2015 2014 (In thousands) Deferred tax assets Loan loss reserves $ 43,749 $ 48,505 REO reserves 11,213 13,680 Asset purchase tax basis difference (net) 5,973 8,812 Delinquent accrued interest 3,069 4,767 FDIC loss share guarantee receivable 7,803 1,800 Other, net 3,891 4,749 Total deferred tax assets 75,698 82,313 Deferred tax liabilities Federal Home Loan Bank stock dividends 24,135 32,810 Valuation adjustment on available-for-sale securities 205 12,032 Loan origination costs 13,875 13,002 Depreciation 25,934 22,021 Total deferred tax liabilities 64,149 79,865 Net deferred tax asset 11,549 2,448 Current tax asset 2,964 14,067 Net tax asset $ 14,513 $ 16,515
Schedule of effective income tax rate reconciliation	A reconciliation of the statutory federal income tax rate to the effective income tax rate follows: Year ended September 30, 2015 2014 2013 Statutory income tax rate 35 % 35 % 35 % State income tax 2 2 2 Other differences (1 ) (1 ) (2 ) Effective income tax rate 36 % 36 % 35 %
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Income taxes (benefit) are summarized as follows: 2015 2014 2013 (In thousands) Federal: Current $ 79,841 $ 70,797 $ 66,756 Deferred 3,244 10,591 10,355 83,085 81,388 77,111 State: Current $ 6,636 $ 4,987 $ 5,213 Deferred (518 ) 1,189 787 6,118 6,176 6,000 Total Current 86,477 75,784 71,969 Deferred 2,726 11,780 11,142 $ 89,203 $ 87,564 $ 83,111

Stock Award Plans (Tables)

Stock Award Plans (Tables)	12 Months Ended
	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of option activity	A summary of stock option activity under the Plan as of 2015 and changes during the year are as follows: Options Shares Weighted Weighted Aggregate Outstanding at September 30, 2014 1,249,009 $ 21.11 4 $1,859 Granted — — Exercised (128,394 ) 16.12 Forfeited (93,241 ) 22.18 Outstanding at September 30, 2015 1,027,374 $ 21.64 3 $ 1,867 Exercisable at September 30, 2015 958,087 $ 21.99 2 $ 1,459
Schedule of miscellaneous information related to stock options	Miscellaneous information related to stock options is presented below: 2015 2014 2013 (In thousands, except fair value of options granted) Compensation cost for stock options $ 232 $ 324 $ 473 Weighted avg. grant date FV 2.96 2.95 3.24 Total intrinsic value of options exercised 831 1,136 781 Grant date FV of options exercised 368 1,962 791 Cash received from option exercises 2,069 10,142 4,261 Tax benefit realized for option exercises — 159 53
Summary of nonvested activity	A summary of the Company's non-vested stock options is as follows: 2015 2014 2013 Non-vested Stock Options Options Outstanding Weighted Options Outstanding Weighted Options Outstanding Weighted Outstanding at beginning of period 145,795 $ 3.87 287,750 $ 3.44 614,272 $ 3.20 Granted — — — — — — Vested (61,018 ) 3.88 (119,520 ) 2.88 (283,407 ) 2.95 Forfeited (15,490 ) 3.90 (22,435 ) 3.63 (43,115 ) 3.25 Outstanding at end of period 69,287 $ 3.85 145,795 $ 3.87 287,750 $ 3.44
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of nonvested activity	The following table summarizes information about nonvested restricted share activity for the years ended September 30: 2015 2014 2013 Non-vested Restricted Stock Outstanding Weighted Outstanding Weighted Outstanding Weighted Outstanding at beginning of period 515,845 $ 14.10 480,904 $ 11.52 371,096 $ 11.88 Granted 301,750 14.26 300,500 $ 15.43 270,750 11.67 Vested (223,043 ) 13.24 (202,014 ) 11.68 (134,792 ) 11.87 Forfeited (73,250 ) 10.72 (63,545 ) 8.50 (26,150 ) 16.45 Outstanding at end of period 521,302 $ 15.03 515,845 $ 14.10 480,904 $ 11.52

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Sep. 30, 2015
Equity [Abstract]
Schedule of compliance with regulatory capital requirements	Actual Capital Adequacy Categorized as Well Capitalized Under Prompt Corrective Action Provisions Capital Ratio Capital Ratio Capital Ratio As of September 30, 2015 (In thousands) Common Equity Tier 1 risk-based capital ratio: The Company $ 1,658,985 18.81 % $637,788 4.50 % NA NA The Bank 1,652,569 18.73 637,810 4.50 $ 921,281 6.50 % Tier 1 risk-based capital ratio: The Company 1,658,985 18.81 529,051 6.00 NA NA The Bank 1,652,569 18.73 529,360 6.00 705,814 8.00 Total risk-based capital ratio: The Company 1,769,587 20.07 705,402 8.00 NA NA The Bank 1,763,171 19.98 705,814 8.00 882,267 10.00 Tier 1 leverage ratio: The Company 1,658,985 11.71 566,923 4.00 NA NA The Bank 1,652,569 11.66 566,942 4.00 708,678 5.00 As of September 30, 2014 Tier 1 risk-based capital ratio: The Company $ 1,648,199 22.71 % $290,335 4.00 % NA NA The Bank 1,658,704 22.85 290,386 4.00 $ 435,579 6.00 % Total risk-based capital ratio: The Company 1,739,658 23.97 580,671 8.00 NA NA The Bank 1,750,179 24.11 580,772 8.00 725,965 10.00 Tier 1 leverage ratio: The Company 1,648,199 11.39 578,804 4.00 NA NA The Bank 1,658,704 11.46 578,816 4.00 723,520 5.00
Schedule of weighted average number of shares	The following table sets forth information regarding earnings per share calculations: Year ended September 30, 2015 2014 2013 Weighted average shares outstanding 95,644,639 101,154,030 104,684,812 Weighted average dilutive warrants 340,016 352,171 100,211 Weighted average dilutive options 69,304 84,150 52,447 Weighted average diluted shares 96,053,959 101,590,351 104,837,470 Net income (In thousands) $ 160,316 $ 157,364 $ 151,505 Basic EPS $ 1.68 $ 1.56 $ 1.45 Diluted EPS 1.67 1.55 1.45

Fair Values of Financial Inst38

Fair Values of Financial Instruments (Tables)	12 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair value of financial instruments by balance sheet grouping	The following table presents the fair value and balance sheet classification of derivatives at September 30, 2015 and September 30, 2014 : Asset Derivatives Liability Derivatives September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 (In thousands) Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Client derivatives Other assets $ 11,879 Other assets $ 2,611 Other liabilities $ 11,879 Other liabilities $ 2,611 Commercial loan hedge Other assets — Other assets — Other liabilities 966 Other liabilities — Long term borrowing hedge Other assets — Other assets — Other liabilities 14,555 Other liabilities 268 $ 11,879 $ 2,611 $ 27,400 $ 2,879 2015 2014 Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (In thousands) Financial assets Cash and cash equivalents 1 $ 284,049 $ 284,049 $ 781,843 $ 781,843 Available-for-sale securities: Equity securities 1 101,952 101,952 101,387 101,387 Obligations of U.S. government 2 482,464 482,464 731,943 731,943 Obligations of states and political subdivisions 2 27,123 27,123 23,681 23,681 Corporate debt securities 2 505,800 505,800 509,007 509,007 Mortgage-backed securities Agency pass-through certificates 2 1,160,518 1,160,518 1,584,508 1,584,508 Other commercial MBS 2 102,706 102,706 98,916 98,916 Total available-for-sale securities 2,380,563 2,380,563 3,049,442 3,049,442 Held-to-maturity securities: Mortgage-backed securities Agency pass-through certificates 2 1,643,216 1,637,420 1,548,265 1,499,218 Total held-to-maturity securities 1,643,216 1,637,420 1,548,265 1,499,218 Loans receivable 3 9,170,634 9,667,750 8,324,798 8,844,532 FDIC indemnification asset 3 16,275 15,522 36,860 35,976 FHLB and FRB stock 2 107,198 107,198 158,839 158,839 Other assets - interest rate contracts 2 11,879 11,879 2,611 2,611 Financial liabilities Customer accounts 2 10,631,703 10,004,290 10,716,928 9,946,586 FHLB advances and other borrowings 2 1,830,000 1,938,384 1,930,000 2,054,437 Other liabilities - interest rate contracts 2 11,879 11,879 2,611 2,611 Other liabilities - commercial loan hedge 2 966 966 — — Other liabilities - long term borrowing hedge 2 14,555 14,555 268 268

Financial Information - Washi39

Financial Information - Washington Federal, INC. (Tables)	12 Months Ended
	Sep. 30, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of condensed financial information	The following Washington Federal, Inc. (parent company only) financial information should be read in conjunction with the other notes to the Consolidated Financial Statements. Condensed Statements of Financial Condition September 30, 2015 2014 (In thousands) Assets Cash $ 7,628 $ 3,895 Investment in subsidiary 1,949,262 1,983,788 Total assets $ 1,956,890 $ 1,987,683 Liabilities Dividend payable and other liabilities $ 1,211 $ 14,400 Total liabilities 1,211 14,400 Stockholders’ equity Total stockholders’ equity 1,955,679 1,973,283 Total liabilities and stockholders’ equity $ 1,956,890 $ 1,987,683 Condensed Statements of Operations Year ended September 30, 2015 2014 2013 (In thousands) Income Dividends from subsidiary $ 175,000 $ 70,000 $ 143,799 Total Income 175,000 70,000 143,799 Expense Miscellaneous 439 485 530 Total expense 439 485 530 Net income before equity in undistributed net income of subsidiary 174,561 69,515 143,269 Equity in undistributed net income of subsidiary (14,402 ) 87,675 8,045 Income before income taxes 160,159 157,190 151,314 Income tax benefit 157 174 191 Net income $ 160,316 $ 157,364 $ 151,505 Condensed Statements of Cash Flows Year ended September 30, 2015 2014 2013 (In thousands) Cash Flows From Operating Activities Net income $ 160,316 $ 157,364 $ 151,505 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiaries 32,375 (87,943 ) (4,893 ) Decrease (increase) in other assets — 1 1 Increase in other liabilities (13,189 ) 4,152 1,698 Net cash provided by operating activities 179,502 73,574 148,311 Cash Flows From Financing Activities Proceeds from exercise of common stock options and related tax benefit 2,070 10,252 4,261 Treasury stock purchased (126,728 ) (104,291 ) (110,238 ) Dividends paid on common stock (51,111 ) (42,065 ) (37,835 ) Net cash used in financing activities (175,769 ) (136,104 ) (143,812 ) Increase (decrease) in cash 3,733 (62,530 ) 4,499 Cash at beginning of year 3,895 66,425 61,926 Cash at end of year $ 7,628 $ 3,895 $ 66,425

Selected Quarterly Financial 40

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Sep. 30, 2015
Quarterly Financial Information Disclosure [Abstract]
Summary of unaudited interim results	The following is a summary of the unaudited interim results of operations by quarter for the years ended September 30, 2015 and 2014 : Year Ended September 30, 2015 First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) Interest income $ 133,284 $ 132,630 $ 129,300 $ 135,339 Interest expense 31,101 28,750 28,735 28,486 Net interest income 102,183 103,880 100,565 106,853 Provision (reversal) for loan losses (5,500 ) (3,949 ) (1,932 ) 219 Other operating income (REO expense) 5,695 12,314 14,999 16,719 Other operating expense 53,600 57,324 56,719 57,208 Income before income taxes 59,778 62,819 60,777 66,145 Income taxes 21,371 22,458 21,727 23,647 Net income $ 38,407 $ 40,361 $ 39,050 $ 42,498 Basic earnings per share $ 0.39 $ 0.42 $ 0.41 $ 0.46 Diluted earnings per share 0.39 0.42 0.41 0.45 Cash dividends paid per share 0.15 0.13 0.13 0.13 Return of average assets 1.05 % 1.11 % 1.08 % 1.17 % Year Ended September 30, 2014 First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) Interest income $ 131,258 $ 132,351 $ 135,011 $ 135,077 Interest expense 32,946 31,715 31,732 31,684 Net interest income 98,312 100,636 103,279 103,393 Provision (reversal) for loan losses (4,600 ) (4,336 ) (3,000 ) (3,465 ) Other operating income (REO expense) 3,837 7,255 6,016 10,808 Other operating expense 44,120 52,059 53,293 54,537 Income before income taxes 62,629 60,168 59,002 63,129 Income taxes 22,393 21,511 21,092 22,568 Net income $ 40,236 $ 38,657 $ 37,910 $ 40,561 Basic earnings per share $ 0.39 $ 0.38 $ 0.38 $ 0.41 Diluted earnings per share 0.39 0.38 0.37 0.41 Cash dividends paid per share 0.10 0.10 0.10 0.11 Return of average assets 1.19 % 1.07 % 1.04 % 1.10 %

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair value of assets measured on recurring basis	The following table presents the balance of assets measured at fair value on a recurring basis at September 30, 2015 and September 30, 2014 : Fair Value at September 30, 2015 Level 1 Level 2 Level 3 Total (In thousands) Available-for-sale securities Equity securities $ 101,952 $ — $ — $ 101,952 Obligations of U.S. government — 482,464 — 482,464 Obligations of states and political subdivisions — 27,123 — 27,123 Obligations of foreign governments — — — — Corporate debt securities — 505,800 — 505,800 Agency pass through mortgage-backed securities — 1,160,518 — 1,160,518 Other commercial MBS — 102,706 — 102,706 Other debt securities — — — — Total Available-for-sale securities 101,952 2,278,611 — 2,380,563 Interest rate contracts — 11,879 — 11,879 Total Financial Assets $ 101,952 $ 2,290,490 $ — $ 2,392,442 Financial Liabilities Interest rate contracts $ — $ 11,879 $ — $ 11,879 Commercial loan hedge — 966 — 966 Long term borrowing hedge — 14,555 — 14,555 Total Financial Liabilities $ — $ 27,400 $ — $ 27,400 There were no transfers between, into and/or out of Levels 1, 2 or 3 during the year ended September 30, 2015 . Fair Value at September 30, 2014 Level 1 Level 2 Level 3 Total (In thousands) Available-for-sale securities Equity securities $ 101,387 $ — $ — $ 101,387 Obligations of U.S. government — 731,943 — 731,943 Obligations of states and political subdivisions — 23,681 — 23,681 Obligations of foreign governments — — — — Corporate debt securities — 509,007 — 509,007 Agency pass through mortgage-backed securities — 1,584,508 — 1,584,508 Other commercial MBS — 98,916 — 98,916 Other debt securities — — — — Total Available-for-sale securities 101,387 2,948,055 — 3,049,442 Interest rate contracts — 2,611 — 2,611 Total Financial Assets $ 101,387 $ 2,950,666 $ — $ 3,052,053 Financial Liabilities Interest rate contracts $ — $ 2,611 $ — $ 2,611 Commercial loan hedge — — — — Long term borrowing hedge — 268 — 268 Total Financial Liabilities $ — $ 2,879 $ — $ 2,879 There were no transfers between, into and/or out of Level 1, 2 or 3 during the year ended September 30, 2014.
Aggregated balance of assets measured at estimated fair value on a nonrecurring basis and total losses resulting from those fair value adjustments	The following table presents the aggregated balance of assets that were measured at estimated fair value on a nonrecurring basis for the year ended September 30, 2015 and September 30, 2014 , and the total losses (gains) resulting from those fair value adjustments for the quarter and year ended September 30, 2015 and September 30, 2014 . These estimated fair values are shown gross of estimated selling costs: As of September 30, 2015 Quarter Year Ended September 30, 2015 Level 1 Level 2 Level 3 Total Total (Gains) Losses (In thousands) Impaired loans (1) $ — $ — $ 6,735 $ 6,735 $ 40 $ 4,241 Covered REO (2) — — 2,203 2,203 (7 ) 161 Real estate held for sale (2) — — 79,245 79,245 661 (7,910 ) Balance at end of period $ — $ — $ 88,183 $ 88,183 $ 694 $ (3,508 ) ___________________ (1) The losses represent remeasurements of collateral-dependent loans. (2) The (gains) losses represent aggregate writedowns and charge-offs on real estate held for sale. As of September 30, 2014 Quarter Year Ended September 30, 2014 Level 1 Level 2 Level 3 Total Total (Gains) Losses (In thousands) Impaired loans (1) $ — $ — 10,156 $ 10,156 — (1,311 ) Covered REO (2) — — 10,520 10,520 113 616 Real estate held for sale (2) — — 51,624 51,624 1,878 18,660 Balance at end of period $ — $ — $ 72,300 $ 72,300 $ 1,991 $ 17,965 ___________________ (1) The (gains) losses represent remeasurements of collateral-dependent loans. (2) The losses represent aggregate writedowns and charge-offs on real estate held for sale.

Summary of Significant Accoun42

Summary of Significant Accounting Policies - Other Narrative (Details)	Nov. 20, 2015USD ($)	Sep. 30, 2015USD ($)paymentofficesegmentpartshares	Sep. 30, 2014USD ($)shares	Sep. 30, 2013USD ($)shares
Summary of Significant Accounting Policies [Line Items]
Number of offices (in offices) | office		247
Days past grace period to initiate contact to cure deficiency		30 days
Minimum days past due to begin foreclosure proceedings		90 days
Approximate rate reduction concession, minimum		1.00%
Approximate rate reduction concession, maximum		2.00%
Minimum days past due to stop accrual of interest		90 days
Loans returned to full accrual status		90 days
Minimum performance period before move to accrual status		6 months
Number of payments required | payment		6
Number of parts in loss percentage factor | part		2
Options outstanding that are not dilutive | shares		94,054	90,846	435,825
Number of reportable business segments | segment		1
FDIC loss share receivable		$ 16,275,000	$ 36,860,000	$ 64,615,000
Payments of dividends		51,111,000	$ 42,065,000	$ 37,835,000
Subsequent Event
Summary of Significant Accounting Policies [Line Items]
Payments of dividends	$ 12,035,000
Interest rate swap agreements
Summary of Significant Accounting Policies [Line Items]
Impact to the statement of operations		$ 0
Minimum
Summary of Significant Accounting Policies [Line Items]
Term for payment and rate reduction		6 months
Maximum
Summary of Significant Accounting Policies [Line Items]
Term for payment and rate reduction		12 months

Summary of Significant Accoun43

Summary of Significant Accounting Policies - Business Combinations (Details) $ in Thousands	Nov. 01, 2012USD ($)branch	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)branch	May. 03, 2014branch	May. 02, 2014branch	Dec. 07, 2013branch	Dec. 06, 2013branch	Nov. 01, 2013branch	Oct. 31, 2013branch	Sep. 30, 2013USD ($)
Business Acquisition [Line Items]
Intangible assets, goodwill		$ 291,503	$ 291,503							$ 260,277
Bank of America, National Association
Business Acquisition [Line Items]
Number of branches acquired (in branches) | branch			74
Deposit accounts			$ 1,900,000
Net loans			13,000
Branch properties			$ 25,000
Premium on deposits			1.99%
Cash and equivalents			$ 1,800,000
Intangibles			11,000
Intangible assets, goodwill			$ 31,000
Bank of America, National Association | New Mexico
Business Acquisition [Line Items]
Number of branches acquired (in branches) | branch								11	11
Bank of America, National Association | Washington, Oregon, and Idaho
Business Acquisition [Line Items]
Number of branches acquired (in branches) | branch						40	40
Bank of America, National Association | Arizona and Nevada
Business Acquisition [Line Items]
Number of branches acquired (in branches) | branch				23	23
South Valley Bancorp, Inc.
Business Acquisition [Line Items]
Deposit accounts	$ 736,000
Net loans	361,000
Net covered loans	108,000
Transaction deposit accounts	533,000
Consideration transferred	44,000
Consideration paid in stock	34,000
Cash resulting from the collection of certain earn-out assets	$ 10,000
South Valley Bancorp, Inc. | Central and Southern Oregon
Business Acquisition [Line Items]
Number of branches acquired (in branches) | branch	24

Summary of Significant Accoun44

Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Goodwill and Intangible Assets [Roll Forward]
Goodwill, beginning of period	$ 291,503	$ 260,277
Goodwill, additions	0	31,226
Goodwill, end of period	291,503	291,503
Intangible assets. amortization	(3,551)	(3,675)
Goodwill and intangible assets, beginning of period	302,909	264,318
Goodwill and intangible assets, additions	0	42,266
Goodwill and intangible assets, end of period	299,358	302,909
Core Deposit [Member]
Goodwill and Intangible Assets [Roll Forward]
Intangible assets, beginning of period	11,406	4,041
Intangible assets, additions	0	11,040
Intangible assets. amortization	(3,551)	(3,675)
Intangible assets, end of period	7,855	$ 11,406
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,016	2,314
2,017	1,607
2,018	1,208
2,019	1,254
2,020	$ 1,254

Investment Securities - Investm

Investment Securities - Investments by Contractual Maturity Date (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Amortized Cost, Available-for-sale securities
Amortized Cost	$ 2,365,450	$ 3,016,432
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains	28,158	37,273
Gross unrealized loss	(13,045)	(4,263)
Fair Value, Available-for-sale securities
Available-for-sale securities	$ 2,380,563	$ 3,049,442
Yield, Available-for-sale securities
Yield	1.97%	1.99%
Amortized Cost, Held-to-maturity securities
Amortized Cost	$ 1,643,216	$ 1,548,265
Gross Unrealized Gains / Losses, Held-to-maturity securities
Gross unrealized gains	10,516	4,855
Gross unrealized losses	(16,312)	(53,902)
Fair Value, Held-to-maturity securities
Fair Value	$ 1,637,420	$ 1,499,218
Yield, Held-to-maturity securities
Without a single maturity date	3.19%
Yield		3.13%
Investments	$ 4,008,666	$ 4,564,697
Gross unrealized gains on investments	38,674	42,128
Gross unrealized losses on investments	(29,357)	(58,165)
Fair value of investments	$ 4,017,983	$ 4,548,660
Yield on investments	2.46%	2.38%
Proceeds from available-for-sale securities	$ 246,826
Gain (loss) on sale of securities	$ 9,641
Term of contractual due dates of substantially all mortgage-backed securities	25 years
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	$ 1,297,408	$ 1,642,718
Obligations of U.S. government
Amortized Cost, Available-for-sale securities
1 to 5 years	105,065	171,154
5 to 10 years	119,071	203,317
Over 10 years	262,832	354,828
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, 1 to 5 years	1,923	2,585
Gross unrealized gains, 5 to 10 years	35	300
Gross unrealized gains, over 10 years	0	1,028
Gross unrealized losses, 1 to 5 years	(274)	(748)
Gross unrealized losses, 5 to 10 years	(1,247)	(102)
Gross unrealized losses, over 10 years	(4,941)	(419)
Fair Value, Available-for-sale securities
1 to 5 years	106,714	172,991
5 to 10 years	117,859	203,515
Over 10 years	$ 257,891	$ 355,437
Yield, Available-for-sale securities
1 to 5 years	1.74%	1.26%
5 to 10 years	1.54%	1.45%
Over 10 years	1.23%	1.25%
Equity Securities
Amortized Cost, Available-for-sale securities
Within 1 year	$ 500
1 to 5 years	99,922	$ 100,500
5 to 10 years	0	0
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, within 1 year	17
Gross unrealized gains, 1 to 5 years	1,513	887
Gross unrealized gains, 5 to 10 years	0
Gross unrealized losses, within 1 year	0
Gross unrealized losses, 1 to 5 years	0	0
Gross unrealized losses, 5 to 10 years	0	0
Fair Value, Available-for-sale securities
Within 1 year	517
1 to 5 years	101,435	101,387
5 to 10 years	$ 0	$ 0
Yield, Available-for-sale securities
Within 1 year	1.80%
1 to 5 years	1.90%	1.90%
5 to 10 years	0.00%	0.00%
Corporate debt securities
Amortized Cost, Available-for-sale securities
Within 1 year	$ 24,787	$ 15,000
1 to 5 years	311,435	302,540
5 to 10 years	100,000	138,201
Over 10 years	69,950	50,000
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, within 1 year	191	75
Gross unrealized gains, 1 to 5 years	1,190	2,372
Gross unrealized gains, 5 to 10 years	876	1,789
Gross unrealized gains, over 10 years	953	0
Gross unrealized losses, within 1 year	0	0
Gross unrealized losses, 1 to 5 years	(58)	0
Gross unrealized losses, 5 to 10 years	(3,524)	(970)
Gross unrealized losses, over 10 years	0	0
Fair Value, Available-for-sale securities
Within 1 year	24,978	15,075
1 to 5 years	312,567	304,912
5 to 10 years	97,352	139,020
Over 10 years	$ 70,903	$ 50,000
Yield, Available-for-sale securities
Within 1 year	0.53%	1.00%
1 to 5 years	0.88%	0.71%
5 to 10 years	1.47%	1.43%
Over 10 years	3.00%	3.00%
Yield, Held-to-maturity securities
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	$ 46,601	$ 24,155
Municipal Bonds
Amortized Cost, Available-for-sale securities
1 to 5 years	2,285	0
5 to 10 years	1,303	0
Over 10 years	20,382	20,402
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, 1 to 5 years	8	0
Gross unrealized gains, 5 to 10 years	7	0
Gross unrealized gains, over 10 years	3,138	3,279
Gross unrealized losses, 1 to 5 years	0	0
Gross unrealized losses, 5 to 10 years	0	0
Gross unrealized losses, over 10 years	0	0
Fair Value, Available-for-sale securities
1 to 5 years	2,293	0
5 to 10 years	1,310	0
Over 10 years	$ 23,520	$ 23,681
Yield, Available-for-sale securities
1 to 5 years	1.23%	0.00%
5 to 10 years	2.05%	0.00%
Over 10 years	6.45%	6.45%
Agency pass through mortgage-backed securities
Amortized Cost, Available-for-sale securities
Without single maturity date	$ 1,144,787	$ 1,561,639
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, without single maturity date	18,222	24,893
Gross unrealized losses, without single maturity date	(2,491)	(2,024)
Fair Value, Available-for-sale securities
Without single maturity date	$ 1,160,518	$ 1,584,508
Yield, Available-for-sale securities
Without single maturity date	2.48%	2.57%
Amortized Cost, Held-to-maturity securities
Without single maturity date	$ 1,643,216	$ 1,548,265
Gross Unrealized Gains / Losses, Held-to-maturity securities
Gross unrealized gains, without single maturity date	10,516	4,855
Gross unrealized losses, without single maturity date	(16,312)	(53,902)
Fair Value, Held-to-maturity securities
Without single maturity date	$ 1,637,420	$ 1,499,218
Yield, Held-to-maturity securities
Without a single maturity date	3.19%	3.13%
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	$ 1,193,463	$ 1,509,209
Commercial Mortgage Backed Securities [Member]
Amortized Cost, Available-for-sale securities
Without single maturity date	103,131	98,851
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, without single maturity date	85	65
Gross unrealized losses, without single maturity date	(510)	0
Fair Value, Available-for-sale securities
Without single maturity date	$ 102,706	$ 98,916
Yield, Available-for-sale securities
Without single maturity date	1.51%	1.49%

Investment Securities - Securit

Investment Securities - Securities in Continuous Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Unrealized gross losses of AFS securities, continuous unrealized loss position, less than 12 months	$ (6,229)	$ (812)
Fair value of AFS securities, continuous unrealized loss position, less than 12 months	578,646	360,665
Unrealized gross losses of AFS securities, continuous unrealized loss position, 12 months or longer	(23,128)	(57,353)
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	1,297,408	1,642,718
Unrealized gross losses of AFS securities, continuous unrealized loss position	(29,357)	(58,165)
Fair value of AFS securities, continuous unrealized loss position	1,876,054	2,003,383
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized gross losses of AFS securities, continuous unrealized loss position, less than 12 months	(183)	(125)
Fair value of AFS securities, continuous unrealized loss position, less than 12 months	72,862	24,875
Unrealized gross losses of AFS securities, continuous unrealized loss position, 12 months or longer	(3,399)	(845)
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	46,601	24,155
Unrealized gross losses of AFS securities, continuous unrealized loss position	(3,582)	(970)
Fair value of AFS securities, continuous unrealized loss position	119,463	49,030
U.S. agency securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized gross losses of AFS securities, continuous unrealized loss position, less than 12 months	(5,010)	(472)
Fair value of AFS securities, continuous unrealized loss position, less than 12 months	336,243	316,578
Unrealized gross losses of AFS securities, continuous unrealized loss position, 12 months or longer	(1,452)	(797)
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	57,344	109,354
Unrealized gross losses of AFS securities, continuous unrealized loss position	(6,462)	(1,269)
Fair value of AFS securities, continuous unrealized loss position	393,587	425,932
Agency pass through mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized gross losses of AFS securities, continuous unrealized loss position, less than 12 months	(1,036)	(215)
Fair value of AFS securities, continuous unrealized loss position, less than 12 months	169,541	19,212
Unrealized gross losses of AFS securities, continuous unrealized loss position, 12 months or longer	(18,277)	(55,711)
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	1,193,463	1,509,209
Unrealized gross losses of AFS securities, continuous unrealized loss position	(19,313)	(55,926)
Fair value of AFS securities, continuous unrealized loss position	$ 1,363,004	$ 1,528,421

Loans Receivable (including C47

Loans Receivable (including Covered Loans) - Schedule of Loans Receivable (including Covered Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 9,823,270	$ 8,882,920
Ratio of type of loan to total loans receivable	100.00%	100.00%
Allowance for probable losses	$ 106,829	$ 114,591	$ 116,741
Loans in process	476,796	346,172
Discount on acquired loans	30,095	59,874
Deferred net origination fees	38,916	37,485
Total loan contra accounts	652,636	558,122
Net Loans	9,170,634	8,324,798
Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	5,700,782
Allowance for probable losses	47,347	62,763	64,184
Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	200,508
Allowance for probable losses	6,680	6,742	8,407
Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	396,309
Allowance for probable losses	990	1,695	882
Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	98,282
Allowance for probable losses	5,781	5,592	9,165
Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	106,813
Allowance for probable losses	2,946	3,077	3,552
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	1,129,437
Allowance for probable losses	5,304	4,248	3,816
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	1,186,551
Allowance for probable losses	8,960	7,548	5,595
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	657,580
Allowance for probable losses	24,980	16,527	16,614
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	149,527
Allowance for probable losses	902	928	1,002
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	197,481
Allowance for probable losses	2,939	3,227	$ 3,524
Non-acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 9,493,987	$ 8,409,022
Ratio of type of loan to total loans receivable	96.80%	94.70%
Non-acquired loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 5,651,845	$ 5,560,203
Ratio of type of loan to total loans receivable	57.60%	62.60%
Non-acquired loans | Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 200,509	$ 140,060
Ratio of type of loan to total loans receivable	2.00%	1.60%
Non-acquired loans | Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 396,307	$ 385,824
Ratio of type of loan to total loans receivable	4.00%	4.30%
Non-acquired loans | Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 94,208	$ 77,832
Ratio of type of loan to total loans receivable	1.00%	0.90%
Non-acquired loans | Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 103,989	$ 108,623
Ratio of type of loan to total loans receivable	1.10%	1.20%
Non-acquired loans | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,125,722	$ 917,286
Ratio of type of loan to total loans receivable	11.60%	10.30%
Non-acquired loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 986,270	$ 591,336
Ratio of type of loan to total loans receivable	10.00%	6.70%
Non-acquired loans | Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 612,836	$ 379,226
Ratio of type of loan to total loans receivable	6.20%	4.30%
Non-acquired loans | HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 127,646	$ 116,042
Ratio of type of loan to total loans receivable	1.30%	1.30%
Non-acquired loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 194,655	$ 132,590
Ratio of type of loan to total loans receivable	2.00%	1.50%
Acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 166,293	$ 184,188
Ratio of type of loan to total loans receivable	1.60%	2.00%
Credit-impaired acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 87,081	$ 76,507
Ratio of type of loan to total loans receivable	0.90%	0.80%
Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 75,909	$ 213,203
Ratio of type of loan to total loans receivable	0.70%	2.50%

Loans Receivable (including C48

Loans Receivable (including Covered Loans) - Interest Rate Terms (Details) $ in Thousands	Sep. 30, 2015USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	$ 6,419,314
Loans at adjustable-rate	3,403,956
Within 1 year
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	343,801
Loans at adjustable-rate	1,778,466
1 to 3 years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	160,832
Loans at adjustable-rate	799,633
3 to 5 years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	97,837
Loans at adjustable-rate	733,061
5 to 10 years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	155,708
Loans at adjustable-rate	92,796
10 to 20 years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	938,938
Loans at adjustable-rate	0
Over 20 years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	4,722,198
Loans at adjustable-rate	$ 0

Loans Receivable (including C49

Loans Receivable (including Covered Loans) - Loans Receivable by Geographic Location (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 9,823,270	$ 8,882,920
Ratio of loans by geographic location to total loans	100.00%
Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 4,880,615
Ratio of loans by geographic location to total loans	49.70%
Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,534,143
Ratio of loans by geographic location to total loans	15.60%
Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 321,282
Ratio of loans by geographic location to total loans	3.30%
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 415,165
Ratio of loans by geographic location to total loans	4.30%
Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,050,595
Ratio of loans by geographic location to total loans	10.70%
Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 672,306
Ratio of loans by geographic location to total loans	6.80%
New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 475,074
Ratio of loans by geographic location to total loans	4.80%
Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 303,221
Ratio of loans by geographic location to total loans	3.10%
Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 170,869
Ratio of loans by geographic location to total loans	1.70%
Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 5,700,782
Ratio of loans by geographic location to total loans	57.90%
Percentage of loans by geographic area as a percentage of loan type	100.00%
Single-family residential | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 2,905,256
Ratio of loans by geographic location to total loans	29.40%
Percentage of loans by geographic area as a percentage of loan type	51.00%
Single-family residential | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 734,368
Ratio of loans by geographic location to total loans	7.50%
Percentage of loans by geographic area as a percentage of loan type	12.90%
Single-family residential | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 154,858
Ratio of loans by geographic location to total loans	1.60%
Percentage of loans by geographic area as a percentage of loan type	2.70%
Single-family residential | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 312,471
Ratio of loans by geographic location to total loans	3.20%
Percentage of loans by geographic area as a percentage of loan type	5.50%
Single-family residential | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 579,743
Ratio of loans by geographic location to total loans	5.90%
Percentage of loans by geographic area as a percentage of loan type	10.20%
Single-family residential | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 492,297
Ratio of loans by geographic location to total loans	5.00%
Percentage of loans by geographic area as a percentage of loan type	8.60%
Single-family residential | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 193,387
Ratio of loans by geographic location to total loans	2.00%
Percentage of loans by geographic area as a percentage of loan type	3.40%
Single-family residential | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 189,355
Ratio of loans by geographic location to total loans	1.90%
Percentage of loans by geographic area as a percentage of loan type	3.30%
Single-family residential | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 139,047
Ratio of loans by geographic location to total loans	1.40%
Percentage of loans by geographic area as a percentage of loan type	2.40%
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,129,437
Ratio of loans by geographic location to total loans	11.60%
Percentage of loans by geographic area as a percentage of loan type	100.00%
Multi-family | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 388,151
Ratio of loans by geographic location to total loans	4.00%
Percentage of loans by geographic area as a percentage of loan type	34.30%
Multi-family | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 328,103
Ratio of loans by geographic location to total loans	3.30%
Percentage of loans by geographic area as a percentage of loan type	29.10%
Multi-family | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 411
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
Multi-family | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 34,502
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	3.10%
Multi-family | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 233,240
Ratio of loans by geographic location to total loans	2.40%
Percentage of loans by geographic area as a percentage of loan type	20.70%
Multi-family | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 55,562
Ratio of loans by geographic location to total loans	0.60%
Percentage of loans by geographic area as a percentage of loan type	4.90%
Multi-family | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 72,729
Ratio of loans by geographic location to total loans	0.70%
Percentage of loans by geographic area as a percentage of loan type	6.40%
Multi-family | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 15,446
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	1.40%
Multi-family | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,293
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.10%
Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 98,282
Ratio of loans by geographic location to total loans	0.90%
Percentage of loans by geographic area as a percentage of loan type	100.00%
Land - acquisition & development | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 54,467
Ratio of loans by geographic location to total loans	0.60%
Percentage of loans by geographic area as a percentage of loan type	55.40%
Land - acquisition & development | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 8,493
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	8.60%
Land - acquisition & development | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
Land - acquisition & development | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 4,235
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	4.30%
Land - acquisition & development | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 4,573
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	4.70%
Land - acquisition & development | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 2,187
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	2.20%
Land - acquisition & development | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 12,348
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	12.60%
Land - acquisition & development | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 11,979
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	12.20%
Land - acquisition & development | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 106,813
Ratio of loans by geographic location to total loans	1.00%
Percentage of loans by geographic area as a percentage of loan type	100.00%
Land - consumer lot loans | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 62,916
Ratio of loans by geographic location to total loans	0.60%
Percentage of loans by geographic area as a percentage of loan type	59.00%
Land - consumer lot loans | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 18,212
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	17.10%
Land - consumer lot loans | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
Land - consumer lot loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 8,098
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	7.60%
Land - consumer lot loans | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 9,227
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	8.60%
Land - consumer lot loans | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 3,566
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	3.30%
Land - consumer lot loans | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 2,714
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	2.50%
Land - consumer lot loans | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 261
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.20%
Land - consumer lot loans | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,819
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	1.70%
Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 396,309
Ratio of loans by geographic location to total loans	4.10%
Percentage of loans by geographic area as a percentage of loan type	100.00%
Construction - custom | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 232,244
Ratio of loans by geographic location to total loans	2.40%
Percentage of loans by geographic area as a percentage of loan type	58.70%
Construction - custom | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 37,781
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	9.50%
Construction - custom | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
Construction - custom | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 17,107
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	4.30%
Construction - custom | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 39,443
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	10.00%
Construction - custom | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 33,292
Ratio of loans by geographic location to total loans	0.30%
Percentage of loans by geographic area as a percentage of loan type	8.40%
Construction - custom | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 20,744
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	5.20%
Construction - custom | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 8,882
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	2.20%
Construction - custom | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 6,816
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	1.70%
Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 200,508
Ratio of loans by geographic location to total loans	2.20%
Percentage of loans by geographic area as a percentage of loan type	100.00%
Construction - speculative | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 84,462
Ratio of loans by geographic location to total loans	0.90%
Percentage of loans by geographic area as a percentage of loan type	42.10%
Construction - speculative | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 34,952
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	17.40%
Construction - speculative | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
Construction - speculative | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 13,634
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	6.80%
Construction - speculative | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 8,542
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	4.30%
Construction - speculative | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 6,856
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	3.40%
Construction - speculative | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 15,666
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	7.80%
Construction - speculative | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 36,396
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	18.20%
Construction - speculative | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,186,551
Ratio of loans by geographic location to total loans	12.20%
Percentage of loans by geographic area as a percentage of loan type	100.00%
Commercial real estate | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 638,974
Ratio of loans by geographic location to total loans	6.50%
Percentage of loans by geographic area as a percentage of loan type	54.00%
Commercial real estate | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 223,625
Ratio of loans by geographic location to total loans	2.30%
Percentage of loans by geographic area as a percentage of loan type	18.80%
Commercial real estate | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 5,594
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	0.50%
Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 7,566
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	0.60%
Commercial real estate | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 116,157
Ratio of loans by geographic location to total loans	1.20%
Percentage of loans by geographic area as a percentage of loan type	9.80%
Commercial real estate | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 37,109
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	3.10%
Commercial real estate | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 132,974
Ratio of loans by geographic location to total loans	1.40%
Percentage of loans by geographic area as a percentage of loan type	11.20%
Commercial real estate | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 21,755
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	1.80%
Commercial real estate | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 2,797
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.20%
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 657,580
Ratio of loans by geographic location to total loans	6.60%
Percentage of loans by geographic area as a percentage of loan type	100.00%
Commercial & industrial | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 350,485
Ratio of loans by geographic location to total loans	3.60%
Percentage of loans by geographic area as a percentage of loan type	53.10%
Commercial & industrial | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 130,743
Ratio of loans by geographic location to total loans	1.30%
Percentage of loans by geographic area as a percentage of loan type	19.90%
Commercial & industrial | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 42,437
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	6.50%
Commercial & industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 11,183
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	1.70%
Commercial & industrial | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 40,754
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	6.20%
Commercial & industrial | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 33,869
Ratio of loans by geographic location to total loans	0.30%
Percentage of loans by geographic area as a percentage of loan type	5.20%
Commercial & industrial | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 10,880
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	1.70%
Commercial & industrial | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 19,114
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	2.90%
Commercial & industrial | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 18,115
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	2.80%
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 197,481
Ratio of loans by geographic location to total loans	2.00%
Percentage of loans by geographic area as a percentage of loan type	100.00%
Consumer | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 74,649
Ratio of loans by geographic location to total loans	0.80%
Percentage of loans by geographic area as a percentage of loan type	37.80%
Consumer | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 3,327
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	1.70%
Consumer | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 117,982
Ratio of loans by geographic location to total loans	1.20%
Percentage of loans by geographic area as a percentage of loan type	59.70%
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 165
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.10%
Consumer | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 297
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.20%
Consumer | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 24
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
Consumer | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 935
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.50%
Consumer | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 33
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
Consumer | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 69
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 149,527
Ratio of loans by geographic location to total loans	1.50%
Percentage of loans by geographic area as a percentage of loan type	100.00%
HELOC | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 89,011
Ratio of loans by geographic location to total loans	0.90%
Percentage of loans by geographic area as a percentage of loan type	59.60%
HELOC | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 14,539
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	9.70%
HELOC | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
HELOC | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 6,204
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	4.10%
HELOC | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 18,619
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	12.50%
HELOC | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 7,544
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	5.00%
HELOC | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 12,697
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	8.50%
HELOC | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.00%
HELOC | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 913
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.60%

Loans Receivable (including C50

Loans Receivable (including Covered Loans) - Loans Impaired, Loan Commitments and Loans Serviced (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Receivables [Abstract]
Loans and leases receivable, related parties	$ 55,965	$ 60,278
Loans and leases receivable, related parties, additions	8,750
Loans and leases receivable, related parties, collections	13,063
Recorded investment in impaired loans	341,579	435,185
Troubled Debt Restructuring included in impaired loans	302,713	374,743
Impaired loans with allocated reserves	2,323	196
Reserves on impaired loans	275	60
Average balance of impaired loans	333,815	403,138
Interest income from impaired loans	14,855	21,674
Outstanding fixed-rate origination commitments	230,869	198,504
Loans serviced for others	$ 72,083	$ 86,745

Loans Receivable (including C51

Loans Receivable (including Covered Loans) - Loans on Non-accrual Status (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 67,810	$ 87,431
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	100.00%	100.00%
Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 59,074	$ 74,067
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	87.10%	84.80%
Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 754	$ 1,477
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.10%	1.70%
Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 732	$ 0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.10%	0.00%
Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 0	$ 811
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.00%	0.90%
Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 1,273	$ 2,637
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.90%	3.00%
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 2,558	$ 1,742
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	3.80%	2.00%
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 2,176	$ 5,106
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	3.20%	5.80%
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment		$ 7
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.00%	0.00%
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 563	$ 795
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.80%	0.90%
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 680	$ 789
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.00%	0.90%

Loans Receivable (including C52

Loans Receivable (including Covered Loans) - Loans Receivable, Analysis of Age of Loans in Past Due Status (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 9,346,474
Financing receivable, recorded investment, current	9,263,876
Financing receivable, recorded investment, past due	$ 82,598
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.88%	1.44%
Ratio of past due to total loans, net of charge-offs and LIPs, current	99.12%
Ratio of past due to total loans, net of charge-offs and LIPs, past due	0.88%
Financing Receivables, 1 to 29 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 21,212
Ratio of past due to total loans, net of charge-offs and LIPs, past due	0.23%
Financing Receivables, 30 to 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 9,198
Ratio of past due to total loans, net of charge-offs and LIPs, past due	0.10%
Financing Receivables, 60 to 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 52,188
Ratio of past due to total loans, net of charge-offs and LIPs, past due	0.56%
Non-acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 9,073,176
Financing receivable, recorded investment, current	8,997,648
Financing receivable, recorded investment, past due	$ 75,528
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.83%
Non-acquired loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 5,655,928
Financing receivable, recorded investment, current	5,590,673
Financing receivable, recorded investment, past due	$ 65,255
Ratio of past due loans to total loans, net of charge-offs and LIPs	1.15%
Non-acquired loans | Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 130,121
Financing receivable, recorded investment, current	130,121
Financing receivable, recorded investment, past due	$ 0
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.00%
Non-acquired loans | Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 205,692
Financing receivable, recorded investment, current	204,168
Financing receivable, recorded investment, past due	$ 1,524
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.74%
Non-acquired loans | Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 75,661
Financing receivable, recorded investment, current	74,737
Financing receivable, recorded investment, past due	$ 924
Ratio of past due loans to total loans, net of charge-offs and LIPs	1.22%
Non-acquired loans | Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 104,494
Financing receivable, recorded investment, current	102,045
Financing receivable, recorded investment, past due	$ 2,449
Ratio of past due loans to total loans, net of charge-offs and LIPs	2.34%
Non-acquired loans | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 1,068,038
Financing receivable, recorded investment, current	1,065,667
Financing receivable, recorded investment, past due	$ 2,371
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.22%
Non-acquired loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 893,072
Financing receivable, recorded investment, current	892,180
Financing receivable, recorded investment, past due	$ 892
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.10%
Non-acquired loans | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 617,545
Financing receivable, recorded investment, current	616,602
Financing receivable, recorded investment, past due	$ 943
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.15%
Non-acquired loans | HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 127,648
Financing receivable, recorded investment, current	127,196
Financing receivable, recorded investment, past due	$ 452
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.35%
Non-acquired loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 194,977
Financing receivable, recorded investment, current	194,259
Financing receivable, recorded investment, past due	$ 718
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.37%
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 20,341
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	17,305
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	0
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	791
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	406
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	689
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	259
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	131
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	93
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	174
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	493
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	9,104
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	7,757
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	0
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	270
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	0
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	399
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	454
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	0
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	27
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	27
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	170
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	46,083
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	40,193
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	0
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	463
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	518
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	1,361
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	1,658
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	761
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	823
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	251
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	55
Acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	57,682
Financing receivable, recorded investment, current	56,559
Financing receivable, recorded investment, past due	$ 1,123
Ratio of past due loans to total loans, net of charge-offs and LIPs	1.95%
Acquired loans | Financing Receivables, 1 to 29 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 356
Acquired loans | Financing Receivables, 30 to 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	0
Acquired loans | Financing Receivables, 60 to 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	767
Credit-impaired acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	139,726
Financing receivable, recorded investment, current	138,940
Financing receivable, recorded investment, past due	$ 786
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.56%
Credit-impaired acquired loans | Financing Receivables, 1 to 29 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 243
Credit-impaired acquired loans | Financing Receivables, 30 to 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	4
Credit-impaired acquired loans | Financing Receivables, 60 to 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	539
Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	75,890
Financing receivable, recorded investment, current	70,729
Financing receivable, recorded investment, past due	$ 5,161
Ratio of past due loans to total loans, net of charge-offs and LIPs	6.80%
Covered Loans | Financing Receivables, 1 to 29 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 272
Covered Loans | Financing Receivables, 30 to 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	90
Covered Loans | Financing Receivables, 60 to 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 4,799

Loans Receivable (including C53

Loans Receivable (including Covered Loans) - Troubled Debt Restructurings and Loan Modifications (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2015USD ($)contract	Sep. 30, 2014USD ($)contract
Financing Receivable, Modifications [Line Items]
Approximate rate reduction concession, minimum	1.00%
Approximate rate reduction concession, maximum	2.00%
Troubled Debt Restructuring included in impaired loans	$ 302,713	$ 374,743
Single family residential loans as percentage of restructured loans	86.00%
Number of contracts | contract	78	267
Pre-modification, outstanding recorded investment	$ 18,930	$ 59,803
Post-modification, outstanding recorded investment	$ 18,930	$ 59,803
Subsequent default, number of contracts | contract	20	46
Subsequent default, recorded investment	$ 3,218	$ 8,396
Single-family residential
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	62	241
Pre-modification, outstanding recorded investment	$ 13,378	$ 52,900
Post-modification, outstanding recorded investment	$ 13,378	$ 52,900
Subsequent default, number of contracts | contract	18	38
Subsequent default, recorded investment	$ 2,917	$ 7,427
Construction - speculative
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	2	0
Pre-modification, outstanding recorded investment	$ 701	$ 0
Post-modification, outstanding recorded investment	$ 701	$ 0
Subsequent default, number of contracts | contract	0	0
Subsequent default, recorded investment	$ 0	$ 0
Construction - custom
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	0
Pre-modification, outstanding recorded investment	$ 0	$ 0
Post-modification, outstanding recorded investment	$ 0	$ 0
Subsequent default, number of contracts | contract	0	0
Subsequent default, recorded investment	$ 0	$ 0
Land - acquisition & development
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	3
Pre-modification, outstanding recorded investment	$ 0	$ 631
Post-modification, outstanding recorded investment	$ 0	$ 631
Subsequent default, number of contracts | contract	0	0
Subsequent default, recorded investment	$ 0	$ 0
Land - consumer lot loans
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	9	13
Pre-modification, outstanding recorded investment	$ 1,546	$ 2,315
Post-modification, outstanding recorded investment	$ 1,546	$ 2,315
Subsequent default, number of contracts | contract	2	8
Subsequent default, recorded investment	$ 301	$ 969
Multi-family
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	3	2
Pre-modification, outstanding recorded investment	$ 0	$ 1,196
Post-modification, outstanding recorded investment	$ 0	$ 1,196
Subsequent default, number of contracts | contract	0	0
Subsequent default, recorded investment	$ 0	$ 0
Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1	3
Pre-modification, outstanding recorded investment	$ 3,175	$ 2,177
Post-modification, outstanding recorded investment	$ 3,175	$ 2,177
Subsequent default, number of contracts | contract	0	0
Subsequent default, recorded investment	$ 0	$ 0
Commercial & industrial
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1	0
Pre-modification, outstanding recorded investment	$ 0	$ 0
Post-modification, outstanding recorded investment	$ 0	$ 0
Subsequent default, number of contracts | contract	0	0
Subsequent default, recorded investment	$ 0	$ 0
HELOC
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	2
Pre-modification, outstanding recorded investment	$ 50	$ 549
Post-modification, outstanding recorded investment	$ 50	$ 549
Subsequent default, number of contracts | contract	0	0
Subsequent default, recorded investment	$ 0	$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	3
Pre-modification, outstanding recorded investment	$ 80	$ 35
Post-modification, outstanding recorded investment	$ 80	$ 35
Subsequent default, number of contracts | contract	0	0
Subsequent default, recorded investment	$ 0	$ 0
Minimum
Financing Receivable, Modifications [Line Items]
Term for payment and rate reduction	6 months
Maximum
Financing Receivable, Modifications [Line Items]
Term for payment and rate reduction	12 months

Loans Receivable (including C54

Loans Receivable (including Covered Loans) - Changes in Accretable Yield for Acquired Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretion	$ 518	$ 802
Credit-impaired acquired loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretable yield, balance at beginning of period	97,125	115,513
Carrying amount, balance at beginning of period	135,826	207,809
Accretable yield, additions	0	0
Carrying Amount, additions	0	0
Accretable yield, reclassifications from nonaccretable balance, net	6,307	17,486
Carrying amount, reclassifications from nonaccretable balance, net	0	(2,069)
Accretable yield, accretion	(30,727)	(35,874)
Accretion	30,727	35,874
Accretable yield, transfers to real estate owned	0	0
Carrying amount, transfers to real estate owned	(2,975)	(10,131)
Accretable yield, payments received, net	0	0
Carrying amount, payments received, net	(52,278)	(95,657)
Accretable yield, balance at end of period	72,705	97,125
Carrying amount, balance at end of period	111,300	135,826
Acquired non-impaired loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretable yield, balance at beginning of period	14,513	22,240
Carrying amount, balance at beginning of period	275,862	403,229
Accretable yield, additions	0	0
Carrying Amount, additions	0	0
Accretable yield, reclassifications from nonaccretable balance, net	346	0
Carrying amount, reclassifications from nonaccretable balance, net	0	0
Accretable yield, accretion	(7,655)	(7,727)
Accretion	7,655	7,727
Accretable yield, transfers to real estate owned	0	0
Carrying amount, transfers to real estate owned	(150)	(4,710)
Accretable yield, payments received, net	0	0
Carrying amount, payments received, net	(96,287)	(130,384)
Accretable yield, balance at end of period	7,204	14,513
Carrying amount, balance at end of period	$ 187,080	$ 275,862

Loans Receivable (including C55

Loans Receivable (including Covered Loans) - Schedule of Covered Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 9,823,270	$ 8,882,920
Discount balance related to acquired loans	(2,738)	(34,483)
FDIC Indemnification Asset Movement Analysis
Balance at beginning of period	36,860	64,615
Additions	(1,795)	1,795
FDIC Indemnification Asset, Payments Made (Received)	(720)	(2,502)
Amortization	(18,588)	(27,850)
Accretion	518	802
Balance at end of period	16,275	36,860
South Valley Bancorp, Inc.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired receivables, estimated uncollectible			$ 9,900
Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 75,909	$ 213,203

Allowance for Losses on Loans -

Allowance for Losses on Loans - Allowance for Losses on Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	$ 114,591	$ 116,741
Charge-offs	(14,600)	(15,099)
Recoveries	19,970	29,463
Provision & Transfers	(13,132)	(16,514)
Ending Allowance	106,829	114,591
Single-family residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	62,763	64,184
Charge-offs	(5,524)	(8,529)
Recoveries	13,403	17,684
Provision & Transfers	(23,295)	(10,576)
Ending Allowance	47,347	62,763
Construction - speculative
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	6,742	8,407
Charge-offs	(388)	(949)
Recoveries	120	97
Provision & Transfers	206	(813)
Ending Allowance	6,680	6,742
Construction - custom
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	1,695	882
Charge-offs	0	0
Recoveries	0	0
Provision & Transfers	(705)	813
Ending Allowance	990	1,695
Land - acquisition & development
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	5,592	9,165
Charge-offs	(38)	(541)
Recoveries	207	3,071
Provision & Transfers	20	(6,103)
Ending Allowance	5,781	5,592
Land - consumer lot loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	3,077	3,552
Charge-offs	(459)	(658)
Recoveries	221	22
Provision & Transfers	107	161
Ending Allowance	2,946	3,077
Multi-family
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	4,248	3,816
Charge-offs	0	0
Recoveries	220	0
Provision & Transfers	836	432
Ending Allowance	5,304	4,248
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	7,548	5,595
Charge-offs	(1,711)	(105)
Recoveries	735	33
Provision & Transfers	2,388	2,025
Ending Allowance	8,960	7,548
Commercial & industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	16,527	16,614
Charge-offs	(3,354)	(826)
Recoveries	1,374	5,043
Provision & Transfers	10,433	(4,304)
Ending Allowance	24,980	16,527
HELOC
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	928	1,002
Charge-offs	(66)	(48)
Recoveries	2	0
Provision & Transfers	38	(26)
Ending Allowance	902	928
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	3,227	3,524
Charge-offs	(3,060)	(3,443)
Recoveries	3,688	3,513
Provision & Transfers	(916)	(367)
Ending Allowance	2,939	3,227
Covered Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	2,244	0
Charge-offs	0	0
Recoveries	0	0
Provision & Transfers	(2,244)	2,244
Ending Allowance	$ 0	$ 2,244

Allowance for Losses on Loans57

Allowance for Losses on Loans - Narrative (Details) - USD ($)	3 Months Ended										12 Months Ended
	Sep. 30, 2015		Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2015		Sep. 30, 2014		Sep. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision (reversal) for loan losses	$ 219,000		$ (1,932,000)	$ (3,949,000)	$ (5,500,000)	$ (3,465,000)		$ (3,000,000)	$ (4,336,000)	$ (4,600,000)	$ (11,162,000)		$ (15,401,000)		$ 1,350,000
Loans receivable, gross	9,823,270,000					8,882,920,000					9,823,270,000		8,882,920,000
Covered loans, allowance for losses	0					2,244,000					0		2,244,000
Nonaccrual loans by portfolio segment	67,810,000					87,431,000					67,810,000		87,431,000
Allowance for credit losses, charge-offs, net of recoveries											(5,370,000)		(14,365,000)
Allowance for probable losses	106,829,000					114,591,000					106,829,000		114,591,000		$ 116,741,000
Loans Collectively Evaluated for Impairment
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, gross	8,963,453,000	[1]				8,316,874,000	[2]				8,963,453,000	[1]	8,316,874,000	[2]
Allowance for probable losses	106,554,000					112,287,000					106,554,000		112,287,000
Loans Individually Evaluated for Impairment
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, gross	85,513,000	[1]				134,736,000	[2]				85,513,000	[1]	134,736,000	[2]
Allowance for probable losses	275,000					60,000					275,000		60,000
Covered Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for probable losses						2,244,000							2,244,000
Non-Performing Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, gross	$ 128,577,000					$ 147,311,000					$ 128,577,000		$ 147,311,000
Ratio of non-performing assets to total assets	0.88%					1.00%					0.88%		1.00%
Acquired loans subject to general allowance	$ 30,778,000										$ 30,778,000
Nonaccrual loans by portfolio segment	$ 67,810,000					$ 87,431,000					$ 67,810,000		$ 87,431,000
[1]	Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans
[2]	Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans

Allowance for Losses on Loans58

Allowance for Losses on Loans - Loans Collectively and Individually Evaluated for Impairment (Details) - USD ($) $ in Thousands	Sep. 30, 2015		Sep. 30, 2014		Sep. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 106,829		$ 114,591		$ 116,741
Gross loans subject to general/specific reserve	9,823,270		8,882,920
Single-family residential
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	47,347		62,763		64,184
Gross loans subject to general/specific reserve	5,700,782
Construction - speculative
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	6,680		6,742		8,407
Gross loans subject to general/specific reserve	200,508
Construction - custom
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	990		1,695		882
Gross loans subject to general/specific reserve	396,309
Land - acquisition & development
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	5,781		5,592		9,165
Gross loans subject to general/specific reserve	98,282
Land - consumer lot loans
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	2,946		3,077		3,552
Gross loans subject to general/specific reserve	106,813
Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	5,304		4,248		3,816
Gross loans subject to general/specific reserve	1,129,437
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	8,960		7,548		5,595
Gross loans subject to general/specific reserve	1,186,551
Commercial & industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	24,980		16,527		16,614
Gross loans subject to general/specific reserve	657,580
HELOC
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	902		928		1,002
Gross loans subject to general/specific reserve	149,527
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	2,939		3,227		$ 3,524
Gross loans subject to general/specific reserve	197,481
Loans Collectively Evaluated for Impairment
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	106,554		112,287
Gross loans subject to general/specific reserve	$ 8,963,453	[1]	$ 8,316,874	[2]
Ratio	1.20%		1.40%
Loans Collectively Evaluated for Impairment | Single-family residential
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 47,073		$ 62,067
Gross loans subject to general/specific reserve	$ 5,595,752	[1]	$ 5,487,331	[2]
Ratio	0.80%		1.10%
Loans Collectively Evaluated for Impairment | Construction - speculative
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 6,680		$ 6,682
Gross loans subject to general/specific reserve	$ 124,679	[1]	$ 130,901	[2]
Ratio	5.40%		5.50%
Loans Collectively Evaluated for Impairment | Construction - custom
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 990		$ 1,695
Gross loans subject to general/specific reserve	$ 205,692	[1]	$ 385,464	[2]
Ratio	0.50%		0.50%
Loans Collectively Evaluated for Impairment | Land - acquisition & development
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 5,781		$ 5,592
Gross loans subject to general/specific reserve	$ 72,602	[1]	$ 73,999	[2]
Ratio	8.00%		7.60%
Loans Collectively Evaluated for Impairment | Land - consumer lot loans
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 2,946		$ 3,077
Gross loans subject to general/specific reserve	$ 93,103	[1]	$ 95,684	[2]
Ratio	3.20%		3.20%
Loans Collectively Evaluated for Impairment | Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 5,304		$ 4,248
Gross loans subject to general/specific reserve	$ 1,062,194	[1]	$ 911,162	[2]
Ratio	0.50%		0.50%
Loans Collectively Evaluated for Impairment | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 8,960		$ 7,548
Gross loans subject to general/specific reserve	$ 844,691	[1]	$ 563,534	[2]
Ratio	1.10%		1.40%
Loans Collectively Evaluated for Impairment | Commercial & industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 24,980		$ 17,223
Gross loans subject to general/specific reserve	$ 643,577	[1]	$ 421,816	[2]
Ratio	3.90%		4.60%
Loans Collectively Evaluated for Impairment | HELOC
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 902		$ 928
Gross loans subject to general/specific reserve	$ 126,594	[1]	$ 114,393	[2]
Ratio	0.70%		0.90%
Loans Collectively Evaluated for Impairment | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 2,938		$ 3,227
Gross loans subject to general/specific reserve	$ 194,569	[1]	$ 132,590	[2]
Ratio	1.50%		2.40%
Loans Individually Evaluated for Impairment
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 275		$ 60
Gross loans subject to general/specific reserve	$ 85,513	[1]	$ 134,736	[2]
Ratio	0.30%		0.00%
Loans Individually Evaluated for Impairment | Single-family residential
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 275		$ 0
Gross loans subject to general/specific reserve	$ 51,718	[1]	$ 72,869	[2]
Ratio	0.50%		0.00%
Loans Individually Evaluated for Impairment | Construction - speculative
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 0		$ 60
Gross loans subject to general/specific reserve	$ 5,441	[1]	$ 9,159	[2]
Ratio	0.00%		0.70%
Loans Individually Evaluated for Impairment | Construction - custom
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 0		$ 0
Gross loans subject to general/specific reserve	$ 0	[1]	$ 360	[2]
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment | Land - acquisition & development
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 0		$ 0
Gross loans subject to general/specific reserve	$ 2,198	[1]	$ 3,833	[2]
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment | Land - consumer lot loans
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 0		$ 0
Gross loans subject to general/specific reserve	$ 10,824	[1]	$ 12,939	[2]
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment | Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 0		$ 0
Gross loans subject to general/specific reserve	$ 5,348	[1]	$ 6,124	[2]
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 0		$ 0
Gross loans subject to general/specific reserve	$ 8,826	[1]	$ 27,802	[2]
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment | Commercial & industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 0		$ 0
Gross loans subject to general/specific reserve	$ 0	[1]	$ 0	[2]
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment | HELOC
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 0		$ 0
Gross loans subject to general/specific reserve	$ 1,072	[1]	$ 1,650	[2]
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 0		$ 0
Gross loans subject to general/specific reserve	$ 86	[1]	$ 0	[2]
Ratio	0.00%		0.00%
[1]	Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans
[2]	Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans

Allowance for Losses on Loans59

Allowance for Losses on Loans - Internally Assigned Grade (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 9,823,270	$ 8,882,920
Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	9,493,987	8,409,022
Acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	166,293	184,188
Credit-impaired acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	87,081	76,507
Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	75,909	213,203
Single-family residential
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	5,700,782
Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	5,651,845	5,560,203
Construction - speculative
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	200,508
Construction - speculative | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	200,509	140,060
Construction - custom
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	396,309
Construction - custom | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	396,307	385,824
Land - acquisition & development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	98,282
Land - acquisition & development | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	94,208	77,832
Land - consumer lot loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	106,813
Land - consumer lot loans | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	103,989	108,623
Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,129,437
Multi-family | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,125,722	917,286
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,186,551
Commercial real estate | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	986,270	591,336
Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	657,580
Commercial & industrial | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	612,836	379,226
HELOC
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	149,527
HELOC | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	127,646	116,042
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	197,481
Consumer | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	194,655	132,590
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 9,605,919	$ 8,558,800
Grade as percentage of total gross assets	97.80%	96.40%
Pass | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 9,333,233	$ 8,205,380
Pass | Acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	149,891	156,954
Pass | Credit-impaired acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	61,019	61,332
Pass | Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	61,776	135,134
Pass | Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	5,558,700	5,426,895
Pass | Construction - speculative | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	197,935	134,950
Pass | Construction - custom | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	396,307	385,824
Pass | Land - acquisition & development | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	89,656	71,692
Pass | Land - consumer lot loans | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	103,569	108,013
Pass | Multi-family | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,118,673	912,728
Pass | Commercial real estate | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	971,510	557,914
Pass | Commercial & industrial | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	575,034	359,221
Pass | HELOC | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	127,398	115,794
Pass | Consumer | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	194,451	132,349
Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 6,721	$ 38,675
Grade as percentage of total gross assets	0.10%	0.40%
Special mention | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 6,721	$ 19,504
Special mention | Acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	16,213
Special mention | Credit-impaired acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	2,143
Special mention | Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	815
Special mention | Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	2,793
Special mention | Construction - speculative | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Special mention | Construction - custom | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Special mention | Land - acquisition & development | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Special mention | Land - consumer lot loans | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Special mention | Multi-family | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	865	0
Special mention | Commercial real estate | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	4,360	1,971
Special mention | Commercial & industrial | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,496	14,740
Special mention | HELOC | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Special mention | Consumer | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 210,630	$ 284,862
Grade as percentage of total gross assets	2.10%	3.20%
Substandard | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 154,033	$ 184,138
Substandard | Acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	16,402	10,963
Substandard | Credit-impaired acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	26,062	13,032
Substandard | Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	14,133	76,729
Substandard | Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	93,145	130,515
Substandard | Construction - speculative | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	2,574	5,110
Substandard | Construction - custom | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Substandard | Land - acquisition & development | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	4,552	6,140
Substandard | Land - consumer lot loans | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	420	610
Substandard | Multi-family | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	6,184	4,558
Substandard | Commercial real estate | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	10,400	31,451
Substandard | Commercial & industrial | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	36,306	5,265
Substandard | HELOC | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	248	248
Substandard | Consumer | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	204	241
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 0	$ 583
Grade as percentage of total gross assets	0.00%	0.00%
Doubtful | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 0	$ 0
Doubtful | Acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	58
Doubtful | Credit-impaired acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	525
Doubtful | Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | Construction - speculative | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | Construction - custom | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | Land - acquisition & development | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | Land - consumer lot loans | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | Multi-family | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | Commercial real estate | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | Commercial & industrial | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | HELOC | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | Consumer | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 0	$ 0
Grade as percentage of total gross assets	0.00%	0.00%
Loss | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 0	$ 0
Loss | Acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Credit-impaired acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Construction - speculative | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Construction - custom | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Land - acquisition & development | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Land - consumer lot loans | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Multi-family | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Commercial real estate | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Commercial & industrial | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | HELOC | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Loss | Consumer | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 0	$ 0

Allowance for Losses on Loans60

Allowance for Losses on Loans - Credit Risk Profile Based on Payment Activity (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 9,823,270	$ 8,882,920
Nonaccrual loans by portfolio segment	67,810	87,431
Single-family residential
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	5,700,782
Nonaccrual loans by portfolio segment	59,074	74,067
Construction - speculative
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	200,508
Nonaccrual loans by portfolio segment	754	1,477
Construction - custom
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	396,309
Nonaccrual loans by portfolio segment	732	0
Land - acquisition & development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	98,282
Nonaccrual loans by portfolio segment	0	811
Land - consumer lot loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	106,813
Nonaccrual loans by portfolio segment	1,273	2,637
Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,129,437
Nonaccrual loans by portfolio segment	2,558	1,742
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,186,551
Nonaccrual loans by portfolio segment	2,176	5,106
Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 657,580
Nonaccrual loans by portfolio segment		7
HELOC
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 149,527
Nonaccrual loans by portfolio segment	563	795
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	197,481
Nonaccrual loans by portfolio segment	680	789
Performing Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 9,426,177	$ 8,321,591
Grade as percentage of total gross assets	99.30%	99.00%
Performing Loans | Single-family residential
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 5,592,771	$ 5,486,136
Grade as percentage of total gross assets	99.00%	98.70%
Performing Loans | Construction - speculative
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 199,755	$ 138,583
Grade as percentage of total gross assets	99.60%	98.90%
Performing Loans | Construction - custom
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 395,575	$ 385,824
Grade as percentage of total gross assets	99.80%	100.00%
Performing Loans | Land - acquisition & development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 94,208	$ 77,021
Grade as percentage of total gross assets	100.00%	99.00%
Performing Loans | Land - consumer lot loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 102,716	$ 105,986
Grade as percentage of total gross assets	98.80%	97.60%
Performing Loans | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 1,123,165	$ 915,544
Grade as percentage of total gross assets	99.80%	99.80%
Performing Loans | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 984,093	$ 586,230
Grade as percentage of total gross assets	99.80%	99.10%
Performing Loans | Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 612,836	$ 379,219
Grade as percentage of total gross assets	100.00%	100.00%
Performing Loans | HELOC
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 127,083	$ 115,247
Grade as percentage of total gross assets	99.60%	99.30%
Performing Loans | Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 193,975	$ 131,801
Grade as percentage of total gross assets	99.70%	99.40%
Non-Performing Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 128,577	$ 147,311
Nonaccrual loans by portfolio segment	$ 67,810	$ 87,431
Percentage of total gross loans	0.70%	1.00%
Non-Performing Loans | Single-family residential
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 59,074	$ 74,067
Percentage of total gross loans	1.00%	1.30%
Non-Performing Loans | Construction - speculative
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 754	$ 1,477
Percentage of total gross loans	0.40%	1.10%
Non-Performing Loans | Construction - custom
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 732	$ 0
Percentage of total gross loans	0.20%	0.00%
Non-Performing Loans | Land - acquisition & development
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 0	$ 811
Percentage of total gross loans	0.00%	1.00%
Non-Performing Loans | Land - consumer lot loans
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 1,273	$ 2,637
Percentage of total gross loans	1.20%	2.40%
Non-Performing Loans | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 2,558	$ 1,742
Percentage of total gross loans	0.20%	0.20%
Non-Performing Loans | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 2,176	$ 5,106
Percentage of total gross loans	0.20%	0.90%
Non-Performing Loans | Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 0	$ 7
Percentage of total gross loans	0.00%	0.00%
Non-Performing Loans | HELOC
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 563	$ 795
Percentage of total gross loans	0.40%	0.70%
Non-Performing Loans | Consumer
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 680	$ 789
Percentage of total gross loans	0.30%	0.60%

Allowance for Losses on Loans61

Allowance for Losses on Loans - Impaired Loans Based on Loan Types (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015		Sep. 30, 2014
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 341,579		$ 435,185
Unpaid principal balance	381,223		470,190
Related allowance	6,678	[1]	10,587	[2]
Average recorded investment	333,815		403,138
Amount of related allowance included in specific reserves	275		60
Amount of related allowance included in general reserves	6,403		10,527
Single-family residential
Financing Receivable, Impaired [Line Items]
Recorded investment	276,711		346,364
Unpaid principal balance	282,912		354,497
Related allowance	6,678		10,527
Average recorded investment	274,097		333,191
Construction - speculative
Financing Receivable, Impaired [Line Items]
Recorded investment	5,441		9,159
Unpaid principal balance	7,929		10,159
Related allowance	0		60
Average recorded investment	5,903		9,336
Construction - custom
Financing Receivable, Impaired [Line Items]
Recorded investment	554		0
Unpaid principal balance	554		0
Related allowance	0		0
Average recorded investment	182		0
Land - acquisition & development
Financing Receivable, Impaired [Line Items]
Recorded investment	5,056		5,533
Unpaid principal balance	12,852		7,961
Related allowance	0		0
Average recorded investment	4,404		5,152
Land - consumer lot loans
Financing Receivable, Impaired [Line Items]
Recorded investment	12,016		13,976
Unpaid principal balance	12,368		14,457
Related allowance	0		0
Average recorded investment	11,868		13,571
Multi-family
Financing Receivable, Impaired [Line Items]
Recorded investment	7,593		6,354
Unpaid principal balance	10,877		6,574
Related allowance	0		0
Average recorded investment	5,277		5,284
Commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded investment	28,551		47,393
Unpaid principal balance	36,698		55,113
Related allowance	0		0
Average recorded investment	27,016		30,292
Commercial & industrial
Financing Receivable, Impaired [Line Items]
Recorded investment	2,955		3,195
Unpaid principal balance	13,066		17,166
Related allowance	0		0
Average recorded investment	2,681		3,900
HELOC
Financing Receivable, Impaired [Line Items]
Recorded investment	2,126		2,505
Unpaid principal balance	2,975		3,216
Related allowance	0		0
Average recorded investment	1,895		1,816
Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	576		706
Unpaid principal balance	992		1,047
Related allowance	0		0
Average recorded investment	492		596
No Allowance Recorded
Financing Receivable, Impaired [Line Items]
Recorded investment	38,866		46,680
Unpaid principal balance	70,564		73,123
Related allowance	0		0
Average recorded investment	29,474		37,474
No Allowance Recorded | Single-family residential
Financing Receivable, Impaired [Line Items]
Recorded investment	17,250		24,044
Unpaid principal balance	19,644		26,628
Related allowance	0		0
Average recorded investment	14,069		16,843
No Allowance Recorded | Construction - speculative
Financing Receivable, Impaired [Line Items]
Recorded investment	453		1,603
Unpaid principal balance	2,151		2,173
Related allowance	0		0
Average recorded investment	471		1,804
No Allowance Recorded | Construction - custom
Financing Receivable, Impaired [Line Items]
Recorded investment	554		0
Unpaid principal balance	554		0
Related allowance	0		0
Average recorded investment	182		0
No Allowance Recorded | Land - acquisition & development
Financing Receivable, Impaired [Line Items]
Recorded investment	2,570		837
Unpaid principal balance	9,426		2,325
Related allowance	0		0
Average recorded investment	926		1,038
No Allowance Recorded | Land - consumer lot loans
Financing Receivable, Impaired [Line Items]
Recorded investment	727		974
Unpaid principal balance	814		1,072
Related allowance	0		0
Average recorded investment	544		713
No Allowance Recorded | Multi-family
Financing Receivable, Impaired [Line Items]
Recorded investment	3,770		1,111
Unpaid principal balance	7,054		1,111
Related allowance	0		0
Average recorded investment	1,545		327
No Allowance Recorded | Commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded investment	9,427		13,234
Unpaid principal balance	15,620		20,085
Related allowance	0		0
Average recorded investment	8,130		11,720
No Allowance Recorded | Commercial & industrial
Financing Receivable, Impaired [Line Items]
Recorded investment	2,955		3,195
Unpaid principal balance	13,066		17,166
Related allowance	0		0
Average recorded investment	2,681		3,900
No Allowance Recorded | HELOC
Financing Receivable, Impaired [Line Items]
Recorded investment	683		1,019
Unpaid principal balance	1,532		1,730
Related allowance	0		0
Average recorded investment	536		612
No Allowance Recorded | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	477		663
Unpaid principal balance	703		833
Related allowance	0		0
Average recorded investment	390		517
Allowance Recorded
Financing Receivable, Impaired [Line Items]
Recorded investment	302,713		388,505
Unpaid principal balance	310,659		397,067
Related allowance	6,678	[1]	10,587	[2]
Average recorded investment	304,341		365,664
Allowance Recorded | Single-family residential
Financing Receivable, Impaired [Line Items]
Recorded investment	259,461		322,320
Unpaid principal balance	263,268		327,869
Related allowance	6,678		10,527
Average recorded investment	260,028		316,348
Allowance Recorded | Construction - speculative
Financing Receivable, Impaired [Line Items]
Recorded investment	4,988		7,556
Unpaid principal balance	5,778		7,986
Related allowance	0		60
Average recorded investment	5,432		7,532
Allowance Recorded | Construction - custom
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		0
Allowance Recorded | Land - acquisition & development
Financing Receivable, Impaired [Line Items]
Recorded investment	2,486		4,696
Unpaid principal balance	3,426		5,636
Related allowance	0		0
Average recorded investment	3,478		4,114
Allowance Recorded | Land - consumer lot loans
Financing Receivable, Impaired [Line Items]
Recorded investment	11,289		13,002
Unpaid principal balance	11,554		13,385
Related allowance	0		0
Average recorded investment	11,324		12,858
Allowance Recorded | Multi-family
Financing Receivable, Impaired [Line Items]
Recorded investment	3,823		5,243
Unpaid principal balance	3,823		5,463
Related allowance	0		0
Average recorded investment	3,732		4,957
Allowance Recorded | Commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded investment	19,124		34,159
Unpaid principal balance	21,078		35,028
Related allowance	0		0
Average recorded investment	18,886		18,572
Allowance Recorded | Commercial & industrial
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0
Unpaid principal balance	0		0
Related allowance	0		0
Average recorded investment	0		0
Allowance Recorded | HELOC
Financing Receivable, Impaired [Line Items]
Recorded investment	1,443		1,486
Unpaid principal balance	1,443		1,486
Related allowance	0		0
Average recorded investment	1,359		1,204
Allowance Recorded | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	99		43
Unpaid principal balance	289		214
Related allowance	0		0
Average recorded investment	$ 102		$ 79
[1]	Includes $275,000 of specific reserves and $6,403,000 included in the general reserves.
[2]	Includes $60,000 of specific reserves and $10,527,000 included in the general reserves.

Interest Receivable (Details)

Interest Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest receivable	$ (40,429)	$ (52,037)
Decrease in accrued interest receivable, net	11,608	(2,819)	$ (330)
Correction for Over-accrual of Interest Income | Restatement Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest receivable	8,872
Loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest receivable	(30,930)	(40,986)
Mortgage-backed securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest receivable	(6,695)	(7,427)
Investment securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest receivable	$ (2,804)	$ (3,624)

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 361,216	$ 330,681
Less accumulated depreciation and amortization	(84,969)	(73,138)
Premises and equipment, net	276,247	257,543
Future minimum payments due, current	5,272,281
Future minimum payments due, two years	3,992,307
Future minimum payments due, three years	3,279,576
Future minimum payments due, four years	2,608,795
Future minimum payments due, five years	2,245,791
Future minimum payments due, thereafter	8,941,391
Rental expense	6,600	6,600	$ 4,680
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	113,347	113,353
Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	147,757	143,627
Leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	10,193	8,547
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 89,919	$ 65,154
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Estimated useful life	25 years	25 years
Minimum | Leasehold improvements
Property, Plant and Equipment [Line Items]
Estimated useful life	7 years	7 years
Minimum | Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Estimated useful life	2 years	2 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years	40 years
Maximum | Leasehold improvements
Property, Plant and Equipment [Line Items]
Estimated useful life	15 years	15 years
Maximum | Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years	10 years

Customer Accounts - Schedule o

Customer Accounts - Schedule of Deposits (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Deposit Liabilities [Line Items]
Checking accounts, .15% and under	$ 2,555,766	$ 2,331,170
Passbook and statement accounts, .10% and under	700,794	622,546
Insured money market accounts, .01% to .15%	2,564,318	2,536,971
Certificate accounts
Less than 2.00%	4,303,475	4,524,158
2.00% to 2.99%	501,409	602,683
3.00% to 3.99%	5,156	98,610
4.00% to 4.99%	150	146
5.00% to 5.99%	635	644
Total certificates	4,810,825	5,226,241
Customer accounts	10,631,703	10,716,928
Within 1 year	2,862,313	3,147,172
1 to 2 years	1,068,792	999,090
2 to 3 years	321,118	659,867
Over 3 years	558,602	420,112
Customer accounts greater than $250,000	$ 2,096,690	$ 1,887,216
Minimum
Deposit Liabilities [Line Items]
Money market rate	0.01%	0.01%
Maximum
Deposit Liabilities [Line Items]
Checking rate	0.15%	0.15%
Passbook and statement rate	0.10%	0.10%
Money market rate	0.15%	0.15%

Customer Accounts - Interest E

Customer Accounts - Interest Expense on Customer Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Banking and Thrift [Abstract]
Checking accounts	$ 1,036	$ 1,259	$ 936
Passbook and statement accounts	660	607	566
Insured money market accounts	3,631	4,574	4,280
Certificate accounts	46,273	52,636	62,669
Interest expense on customer accounts, gross	51,600	59,076	68,451
Less early withdrawal penalties	(546)	(552)	(548)
Interest expense on customer accounts	$ 51,054	$ 58,524	$ 67,903
Weighted average interest rate at end of year	0.48%	0.51%	0.69%
Weighted daily average interest rate during the year	0.48%	0.57%	0.75%

FHLB Advances and Other Borro66

FHLB Advances and Other Borrowings - FHLB Advances (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Banking and Thrift [Abstract]
Within 1 year	$ 250,000	$ 100,000
1 to 3 years	750,000	700,000
4 to 5 years	430,000	730,000
More than 5 years	400,000	400,000
FHLB advances	$ 1,830,000	$ 1,930,000

FHLB Advances and Other Borro67

FHLB Advances and Other Borrowings - Weighted Average Cost and Amount of Advances (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Federal Home Loan Banks [Abstract]
Weighted average interest rate at end of year	3.35%	3.52%	3.52%
Weighted daily average interest rate during the year	3.57%	3.56%	3.57%
Daily average of FHLB advances	$ 1,848,904	$ 1,955,205	$ 1,905,479
Maximum amount of FHLB advances at any month end	1,930,000	2,205,000	1,930,000
Interest expense during the year (excludes interest rate swap expense)	$ 64,331	$ 68,307	$ 68,075

FHLB Advances and Other Borro68

FHLB Advances and Other Borrowings - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Repurchase agreements with customers	$ 0	$ 0	$ 0
Other borrowings	$ 0	$ 0	$ 0
Federal Home Loan Bank of Des Moines
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal home loan bank, percent of assets	49.00%

Derivatives and Hedging Activ69

Derivatives and Hedging Activities (Details) - USD ($)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Derivative [Line Items]
Collateral, obligation to return securities	$ 59,000,000
Asset derivatives, fair value	11,879,000	$ 2,611,000
Liability derivatives, fair value	27,400,000	2,879,000
Interest rate swap agreements
Derivative [Line Items]
Notional amount	894,231,000
Customer derivatives program	439,416,000
Impact to the statement of operations	0
Fee income	1,939,598	920,705
Loss recognized in other comprehensive income	9,205,790
Interest rate swap agreements | Forward contracts
Derivative [Line Items]
Notional amount	400,000,000
Client derivatives | Other assets
Derivative [Line Items]
Asset derivatives, fair value	11,879,000	2,611,000
Client derivatives | Other liabilities
Derivative [Line Items]
Liability derivatives, fair value	11,879,000	2,611,000
Commercial loan hedge
Derivative [Line Items]
Notional amount	54,815,000
Commercial loan hedge | Other liabilities
Derivative [Line Items]
Liability derivatives, fair value	966,000	0
Long term borrowing hedge | Other assets
Derivative [Line Items]
Asset derivatives, fair value	0	0
Long term borrowing hedge | Other liabilities
Derivative [Line Items]
Liability derivatives, fair value	$ 14,555,000	$ 268,000

Income Taxes - Net Deferred Tax

Income Taxes - Net Deferred Tax Asset (Liability) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Deferred tax assets
Loan loss reserves	$ 43,749	$ 48,505
REO reserves	11,213	13,680
Asset purchase tax basis difference (net)	5,973	8,812
Delinquent accrued interest	3,069	4,767
FDIC loss share guarantee receivable	7,803	1,800
Other, net	3,891	4,749
Total deferred tax assets	75,698	82,313
Deferred tax liabilities
Federal Home Loan Bank stock dividends	24,135	32,810
Valuation adjustment on available-for-sale securities	205	12,032
Loan origination costs	13,875	13,002
Depreciation	25,934	22,021
Total deferred tax liabilities	64,149	79,865
Net deferred tax asset	11,549	2,448
Current tax asset	2,964	14,067
Net tax asset	$ 14,513	$ 16,515

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Effective Income Tax Rate (Details)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]
Statutory income tax rate	35.00%	35.00%	35.00%
State income tax	2.00%	2.00%	2.00%
Other differences	(1.00%)	(1.00%)	(2.00%)
Effective income tax rate	36.00%	36.00%	35.00%

Income Taxes - Components of In

Income Taxes - Components of Income Taxes (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Federal:
Current									$ 79,841	$ 70,797	$ 66,756
Deferred									3,244	10,591	10,355
Federal									83,085	81,388	77,111
State:
Current									6,636	4,987	5,213
Deferred									(518)	1,189	787
State									6,118	6,176	6,000
Total
Current									86,477	75,784	71,969
Deferred									2,726	11,780	11,142
Income taxes	$ 23,647	$ 21,727	$ 22,458	$ 21,371	$ 22,568	$ 21,092	$ 21,511	$ 22,393	$ 89,203	$ 87,564	$ 83,111

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Net deferred tax asset (liability)	$ 11,549	$ 2,448
Liability for uncertain tax positions	100	100
Unrecognized tax benefits that would impact effective tax rate	100
Interest on income taxes accrued	$ 10	$ 12
Returns open to examination, minimum (years)	3 years
Returns open to examination, maximum (years)	5 years
Returns open to examination, state impact of federal changes, maximum (years)	2 years

401(k) and Employee Stock Own74

401(k) and Employee Stock Ownership Plan (Details) - USD ($)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]
Employee contribution, percentage of annual salary	100.00%
Employee contribution, maximum allowable contribution	$ 53,000
Term for employees to become fully vested	6 years
Employer matching contribution percent	100.00%
Percent of employees' gross pay	4.00%
Profit sharing contribution, percent	7.00%
Company contributions to plan	$ 8,700,000	$ 7,314,000	$ 5,870,000

Stock Award Plans - Additional

Stock Award Plans - Additional Information (Details)	12 Months Ended
	Sep. 30, 2015USD ($)planshares	Sep. 30, 2014USD ($)shares	Sep. 30, 2013USD ($)shares	Sep. 30, 2012shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of compensation plans | plan	1
Shares authorized to be reserved | shares	5,000,000
Shares available for issuance | shares	4,201,230
Award vesting period (in years)	5 years
Contractual term of award (in years)	10 years
Unrecognized compensation cost for stock options, net of forfeitures	$ 95,182
Weighted average remaining period (years)	6 months
Compensation cost for stock options	$ 232,000	$ 324,000	$ 473,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, nonvested, number | shares	521,302	515,845	480,904	371,096
Fair market value at date of grant at restricted stock	$ 7,800,000	$ 7,300,000
Compensation cost for stock options	$ 3,271,564	$ 3,085,081	$ 2,815,049
Minimum | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	1 year
Maximum | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	7 years

Stock Award Plans - Option Acti

Stock Award Plans - Option Activity (Details) - Employee Stock Option [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at September 30, 2014	1,249,009
Granted	0
Exercised	(128,394)
Forfeited	(93,241)
Outstanding at September 30, 2015	1,027,374	1,249,009
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Options outstanding, weighted average exercise price at beginning of period (USD per share)	$ 21.11
Options granted, weighted average exercise price (USD per share)	0
Options exercised, weighted average exercise price (USD per share)	16.12
Options forfeited, weighted average exercise price (USD per share)	22.18
Options outstanding, weighted average exercise price at end of period (USD per share)	$ 21.64	$ 21.11
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable	958,087
Options exercisable, weighted average exercise price (USD per share)	$ 21.99
Options outstanding, weighted average remaining contractual term (in years)	3 years	4 years
Options exercisable, weighted average remaining contractual term (in years)	2 years
Options outstanding, aggregate intrinsic value	$ 1,867	$ 1,859
Options exercisable, aggregate intrinsic value	$ 1,459

Stock Award Plans - Other Stock

Stock Award Plans - Other Stock Option Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Compensation cost for stock options	$ 232	$ 324	$ 473
Weighted avg. grant date FV (USD per share)	$ 2.96	$ 2.95	$ 3.24
Total intrinsic value of options exercised	$ 831	$ 1,136	$ 781
Grant date FV of options exercised	368	1,962	791
Cash received from option exercises	2,069	10,142	4,261
Tax benefit realized for option exercises	$ 0	$ 159	$ 53

Stock Award Plans - Nonvested S

Stock Award Plans - Nonvested Stock Options (Details) - $ / shares	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Weighted Average Grant Date Fair Value
Granted (USD per share)	$ 2.96	$ 2.95	$ 3.24
Non-Vested Options
Options Outstanding
Outstanding at beginning of period	145,795	287,750	614,272
Granted	0	0	0
Vested	(61,018)	(119,520)	(283,407)
Forfeited	(15,490)	(22,435)	(43,115)
Outstanding at end of period	69,287	145,795	287,750
Weighted Average Grant Date Fair Value
Outstanding at beginning of period (USD per share)	$ 3.87	$ 3.44	$ 3.20
Granted (USD per share)	0	0	0
Vested (USD per share)	3.88	2.88	2.95
Forfeited (USD per share)	3.90	3.63	3.25
Outstanding at end of period (USD per share)	$ 3.85	$ 3.87	$ 3.44

Stock Award Plans - Nonvested R

Stock Award Plans - Nonvested Restricted Stock (Details) - Restricted Stock - $ / shares	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of period	515,845	480,904	371,096
Granted	301,750	300,500	270,750
Vested	(223,043)	(202,014)	(134,792)
Forfeited	(73,250)	(63,545)	(26,150)
Outstanding at end of period	521,302	515,845	480,904
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding, weighted average grant date fair value, beginning of period (USD per share)	$ 15.03	$ 14.10	$ 11.52	$ 11.88
Granted, weighted average grant date fair value (USD per share)	14.26	15.43	11.67
Vested, weighted average grant date fair value (USD per share)	13.24	11.68	11.87
Forfeited, weighted average grant date fair value (USD per share)	10.72	8.50	16.45
Outstanding, weighted average grant date fair value, end of period (USD per share)	$ 15.03	$ 14.10	$ 11.52	$ 11.88

Stockholders' Equity - Regulato

Stockholders' Equity - Regulatory Capital Requirements (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
The Company
Common Equity Tier 1 risk-based capital ratio:
Tier one common equity capital	$ 1,658,985
Tier one common equity capital to risk weighted assets	18.81%
Tier one common equity capital required for capital adequacy	$ 637,788
Tier one common equity capital required for capital adequacy to risk weighted assets	4.50%
Tier 1 risk-based capital ratio:
Tier one risk based capital	$ 1,658,985	$ 1,648,199
Tier one risk based capital to risk weighted assets	18.81%	22.71%
Tier one risk based capital required for capital adequacy	$ 529,051	$ 290,335
Tier one risk based capital required for capital adequacy to risk weighted assets	6.00%	4.00%
Total risk-based capital ratio:
Capital	$ 1,769,587	$ 1,739,658
Capital to risk weighted assets	20.07%	23.97%
Capital required for capital adequacy	$ 705,402	$ 580,671
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Tier 1 leverage ratio:
Tier one leverage capital	$ 1,658,985	$ 1,648,199
Tier one leverage capital to average assets	11.71%	11.39%
Tier one leverage capital required for capital adequacy	$ 566,923	$ 578,804
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%
The Bank
Common Equity Tier 1 risk-based capital ratio:
Tier one common equity capital	$ 1,652,569
Tier one common equity capital to risk weighted assets	18.73%
Tier one common equity capital required for capital adequacy	$ 637,810
Tier one common equity capital required for capital adequacy to risk weighted assets	4.50%
Tier one common equity capital required to be well capitalized	$ 921,281
Tier one common equity capital required to be well capitalized to risk weighted assets	6.50%
Tier 1 risk-based capital ratio:
Tier one risk based capital	$ 1,652,569	$ 1,658,704
Tier one risk based capital to risk weighted assets	18.73%	22.85%
Tier one risk based capital required for capital adequacy	$ 529,360	$ 290,386
Tier one risk based capital required for capital adequacy to risk weighted assets	6.00%	4.00%
Tier one risk based capital required to be well capitalized	$ 705,814	$ 435,579
Tier one risk based capital required to be well capitalized to risk weighted assets	8.00%	6.00%
Total risk-based capital ratio:
Capital	$ 1,763,171	$ 1,750,179
Capital to risk weighted assets	19.98%	24.11%
Capital required for capital adequacy	$ 705,814	$ 580,772
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Capital required to be well capitalized	$ 882,267	$ 725,965
Capital required to be well capitalized to risk weighted assets	10.00%	10.00%
Tier 1 leverage ratio:
Tier one leverage capital	$ 1,652,569	$ 1,658,704
Tier one leverage capital to average assets	11.66%	11.46%
Tier one leverage capital required for capital adequacy	$ 566,942	$ 578,816
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%
Tier one leverage capital required to be well capitalized	$ 708,678	$ 723,520
Tier one leverage capital required to be well capitalized to average assets	5.00%	5.00%

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details) - $ / shares	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Class of Stock [Line Items]
Tier one capital required for capital adequacy to risk weighted assets, conservation buffer	2.50%
Stock repurchased	5,841,204	4,830,400
Additional shares authorized to be repurchased	4,201,230
Warrants issued (in shares)	1,707,456
Warrant exercise price (in dollars per share)	$ 17.57
Warrants outstanding	1,700,856,000
Weighted Average
Class of Stock [Line Items]
Weighted average cost of repurchased stock (in dollars per share)	$ 21.70	$ 21.59

Stockholders' Equity - Earnings

Stockholders' Equity - Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Basic weighted average number of shares outstanding (in shares)									95,644,639	101,154,030	104,684,812
Diluted weighted average number of shares outstanding, including dilutive stock options (in shares)									96,053,959	101,590,351	104,837,470
Net income	$ 42,498	$ 39,050	$ 40,361	$ 38,407	$ 40,561	$ 37,910	$ 38,657	$ 40,236	$ 160,316	$ 157,364	$ 151,505
Basic earnings per share (in dollars per share)	$ 0.46	$ 0.41	$ 0.42	$ 0.39	$ 0.41	$ 0.38	$ 0.38	$ 0.39	$ 1.68	$ 1.56	$ 1.45
Diluted earnings per share (in dollars per share)	$ 0.45	$ 0.41	$ 0.42	$ 0.39	$ 0.41	$ 0.37	$ 0.38	$ 0.39	$ 1.67	$ 1.55	$ 1.45
Warrant
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average call options and warrants (in shares)									340,016	352,171	100,211
Equity Option
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average call options and warrants (in shares)									69,304	84,150	52,447

Fair Values of Financial Inst83

Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	$ 2,380,563	$ 3,049,442
Held-to-maturity securities	1,637,420	1,499,218
Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	2,380,563	3,049,442
Held-to-maturity securities	1,643,216	1,548,265
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	284,049	781,843
Level 1 | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	284,049	781,843
Level 1 | Equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	101,952	101,387
Level 1 | Equity securities | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	101,952	101,387
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
FHLB and FRB stock	107,198	158,839
Customer accounts	10,004,290	9,946,586
FHLB advances and other borrowings	1,938,384	2,054,437
Level 2 | Interest rate contract
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	11,879	2,611
Other liabilities	11,879	2,611
Level 2 | Commercial loan hedge
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other liabilities	966	0
Level 2 | Long term borrowing hedge
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other liabilities	14,555	268
Level 2 | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
FHLB and FRB stock	107,198	158,839
Customer accounts	10,631,703	10,716,928
FHLB advances and other borrowings	1,830,000	1,930,000
Level 2 | Carrying amount | Interest rate contract
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	11,879	2,611
Other liabilities	11,879	2,611
Level 2 | Carrying amount | Commercial loan hedge
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other liabilities	966	0
Level 2 | Carrying amount | Long term borrowing hedge
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other liabilities	14,555	268
Level 2 | U.S. agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	482,464	731,943
Level 2 | U.S. agency securities | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	482,464	731,943
Level 2 | Obligations of states and political subdivisions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	27,123	23,681
Level 2 | Obligations of states and political subdivisions | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	27,123	23,681
Level 2 | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	505,800	509,007
Level 2 | Corporate debt securities | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	505,800	509,007
Level 2 | Agency pass through mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	1,160,518	1,584,508
Held-to-maturity securities	1,637,420	1,499,218
Level 2 | Agency pass through mortgage-backed securities | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	1,160,518	1,584,508
Held-to-maturity securities	1,643,216	1,548,265
Level 2 | Other commercial mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	102,706	98,916
Level 2 | Other commercial mortgage-backed securities | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	102,706	98,916
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable	9,667,750	8,844,532
FDIC indemnification asset	15,522	35,976
Level 3 | Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable	9,170,634	8,324,798
FDIC indemnification asset	$ 16,275	$ 36,860

Financial Information - Washi84

Financial Information - Washington Federal, INC. - Statement of Financial Condition (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Assets
Total assets	$ 14,568,324	$ 14,756,041
Liabilities
Total liabilities	12,612,645	12,782,758
Stockholders’ equity
Total stockholders’ equity	1,955,679	1,973,283	$ 1,937,635	$ 1,899,752
Total liabilities and stockholders’ equity	14,568,324	14,756,041
Parent Company
Assets
Cash	7,628	3,895
Investment in subsidiary	1,949,262	1,983,788
Total assets	1,956,890	1,987,683
Liabilities
Dividend payable and other liabilities	1,211	14,400
Total liabilities	1,211	14,400
Stockholders’ equity
Total stockholders’ equity	1,955,679	1,973,283
Total liabilities and stockholders’ equity	$ 1,956,890	$ 1,987,683

Financial Information - Washi85

Financial Information - Washington Federal, INC. - Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Income
Total Income	$ 135,339	$ 129,300	$ 132,630	$ 133,284	$ 135,077	$ 135,011	$ 132,351	$ 131,258	$ 530,553	$ 533,697	$ 516,291
Expense
Income before income taxes	66,145	60,777	62,819	59,778	63,129	59,002	60,168	62,629	249,519	244,928	234,616
Income tax benefit	(23,647)	(21,727)	(22,458)	(21,371)	(22,568)	(21,092)	(21,511)	(22,393)	(89,203)	(87,564)	(83,111)
NET INCOME	$ 42,498	$ 39,050	$ 40,361	$ 38,407	$ 40,561	$ 37,910	$ 38,657	$ 40,236	160,316	157,364	151,505
Parent Company
Income
Dividends from subsidiary									175,000	70,000	143,799
Total Income									175,000	70,000	143,799
Expense
Miscellaneous									439	485	530
Total expense									439	485	530
Net income before equity in undistributed net income of subsidiary									174,561	69,515	143,269
Equity in undistributed net income of subsidiary									(14,402)	87,675	8,045
Income before income taxes									160,159	157,190	151,314
Income tax benefit									157	174	191
NET INCOME									$ 160,316	$ 157,364	$ 151,505

Financial Information - Washi86

Financial Information - Washington Federal, INC. - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Cash Flows From Operating Activities
Net income	$ 42,498	$ 39,050	$ 40,361	$ 38,407	$ 40,561	$ 37,910	$ 38,657	$ 40,236	$ 160,316	$ 157,364	$ 151,505
Adjustments to reconcile net income to net cash provided by operating activities:
Decrease (increase) in other assets									(29,220)	(17,799)	36,350
Net cash provided by operating activities									142,871	173,715	181,422
Cash Flows From Financing Activities
Proceeds from exercise of common stock options and related tax benefit									2,070	10,252	4,261
Treasury stock purchased									(126,728)	(104,291)	(110,238)
Dividends paid on common stock									(51,111)	(42,065)	(37,835)
Net cash (used) by financing activities									(350,176)	(376,457)	(337,395)
Increase (decrease) in cash and cash equivalents									(497,794)	578,280	(547,867)
Cash and cash equivalents at beginning of period				781,843				203,563	781,843	203,563	751,430
Cash and cash equivalents at end of period	284,049				781,843				284,049	781,843	203,563
Parent Company
Cash Flows From Operating Activities
Net income									160,316	157,364	151,505
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income of subsidiaries									32,375	(87,943)	(4,893)
Decrease (increase) in other assets									0	1	1
Increase in other liabilities									(13,189)	4,152	1,698
Net cash provided by operating activities									179,502	73,574	148,311
Cash Flows From Financing Activities
Proceeds from exercise of common stock options and related tax benefit									2,070	10,252	4,261
Treasury stock purchased									(126,728)	(104,291)	(110,238)
Dividends paid on common stock									(51,111)	(42,065)	(37,835)
Net cash (used) by financing activities									(175,769)	(136,104)	(143,812)
Increase (decrease) in cash and cash equivalents									3,733	(62,530)	4,499
Cash and cash equivalents at beginning of period				$ 3,895				$ 66,425	3,895	66,425	61,926
Cash and cash equivalents at end of period	$ 7,628				$ 3,895				$ 7,628	$ 3,895	$ 66,425

Selected Quarterly Financial 87

Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Quarterly Financial Information Disclosure [Abstract]
Total Income	$ 135,339	$ 129,300	$ 132,630	$ 133,284	$ 135,077	$ 135,011	$ 132,351	$ 131,258	$ 530,553	$ 533,697	$ 516,291
Interest expense	28,486	28,735	28,750	31,101	31,684	31,732	31,715	32,946	117,072	128,077	136,159
Net interest income	106,853	100,565	103,880	102,183	103,393	103,279	100,636	98,312	413,481	405,620	380,132
Provision (reversal) for loan losses	219	(1,932)	(3,949)	(5,500)	(3,465)	(3,000)	(4,336)	(4,600)	(11,162)	(15,401)	1,350
Other operating income (REO expense)	16,719	14,999	12,314	5,695	10,808	6,016	7,255	3,837
Other operating expense	57,208	56,719	57,324	53,600	54,537	53,293	52,059	44,120	224,851	204,009	164,240
Income before income taxes	66,145	60,777	62,819	59,778	63,129	59,002	60,168	62,629	249,519	244,928	234,616
Income taxes	23,647	21,727	22,458	21,371	22,568	21,092	21,511	22,393	89,203	87,564	83,111
NET INCOME	$ 42,498	$ 39,050	$ 40,361	$ 38,407	$ 40,561	$ 37,910	$ 38,657	$ 40,236	$ 160,316	$ 157,364	$ 151,505
Basic earnings per share (in dollars per share)	$ 0.46	$ 0.41	$ 0.42	$ 0.39	$ 0.41	$ 0.38	$ 0.38	$ 0.39	$ 1.68	$ 1.56	$ 1.45
Diluted earnings per share (in dollars per share)	0.45	0.41	0.42	0.39	0.41	0.37	0.38	0.39	$ 1.67	$ 1.55	$ 1.45
Cash dividends per share (in dollars per share)	$ 0.13	$ 0.13	$ 0.13	$ 0.15	$ 0.11	$ 0.10	$ 0.10	$ 0.10
Return of average assets	1.17%	1.08%	1.11%	1.05%	1.10%	1.04%	1.07%	1.19%

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Measured on Recurring Basis (Details) - USD ($)	Sep. 30, 2015	Sep. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	$ 2,380,563,000	$ 3,049,442,000
Bank owned life insurance	102,496,000	0
Total Financial Assets	4,017,983,000	4,548,660,000
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	2,380,563,000	3,049,442,000
Interest rate contracts	11,879,000	2,611,000
Total Financial Assets	2,392,442,000	3,052,053,000
Total Financial Liabilities	27,400,000	2,879,000
Level 1 to level 2 transfers	0	0
Level 2 to level 1 transfers	0	0
Level 1 to level 3 transfers	0	0
Level 3 to level 1 transfers	0	0
Level 2 to level 3 transfers	0	0
Level 3 to level 2 transfers	0	0
Fair Value, Measurements, Recurring | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	11,879,000	2,611,000
Fair Value, Measurements, Recurring | Commercial loan hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	966,000	0
Fair Value, Measurements, Recurring | Long term borrowing hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	14,555,000	268,000
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	101,952,000	101,387,000
Total Financial Assets	101,952,000	101,387,000
Total Financial Liabilities	0	0
Fair Value, Measurements, Recurring | Level 1 | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	0	0
Fair Value, Measurements, Recurring | Level 1 | Commercial loan hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	0	0
Fair Value, Measurements, Recurring | Level 1 | Long term borrowing hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	2,278,611,000	2,948,055,000
Interest rate contracts	11,879,000	2,611,000
Total Financial Assets	2,290,490,000	2,950,666,000
Total Financial Liabilities	27,400,000	2,879,000
Fair Value, Measurements, Recurring | Level 2 | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	11,879,000	2,611,000
Fair Value, Measurements, Recurring | Level 2 | Commercial loan hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	966,000	0
Fair Value, Measurements, Recurring | Level 2 | Long term borrowing hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	14,555,000	268,000
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Total Financial Assets	0	0
Total Financial Liabilities	0	0
Fair Value, Measurements, Recurring | Level 3 | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities		0
Equity securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	101,952,000	101,387,000
Equity securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	101,952,000	101,387,000
Equity securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	101,952,000	101,387,000
Equity securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Equity securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Obligations of U.S. government | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	482,464,000	731,943,000
Obligations of U.S. government | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Obligations of U.S. government | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	482,464,000	731,943,000
Obligations of U.S. government | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Obligations of states and political subdivisions | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	27,123,000	23,681,000
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	27,123,000	23,681,000
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	27,123,000	23,681,000
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Obligations of foreign governments | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Obligations of foreign governments | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Obligations of foreign governments | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Obligations of foreign governments | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Corporate debt securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	505,800,000	509,007,000
Corporate debt securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	505,800,000	509,007,000
Corporate debt securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Corporate debt securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	505,800,000	509,007,000
Corporate debt securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Agency pass through mortgage-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,160,518,000	1,584,508,000
Agency pass through mortgage-backed securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,160,518,000	1,584,508,000
Agency pass through mortgage-backed securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Agency pass through mortgage-backed securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,160,518,000	1,584,508,000
Agency pass through mortgage-backed securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Other commercial mortgage-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	102,706,000	98,916,000
Other commercial mortgage-backed securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	102,706,000	98,916,000
Other commercial mortgage-backed securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Other commercial mortgage-backed securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	102,706,000	98,916,000
Other commercial mortgage-backed securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Other debt securites | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Other debt securites | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Other debt securites | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Other debt securites | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	$ 0	$ 0

Fair Value Measurements - Fai89

Fair Value Measurements - Fair Value Measured on Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Sep. 30, 2015		Sep. 30, 2014		Sep. 30, 2015		Sep. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	$ 88,183		$ 72,300		$ 88,183		$ 72,300
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	0		0		0		0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	0		0		0		0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	88,183		72,300		88,183		72,300
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	6,735	[1]	10,156	[2]	6,735	[1]	10,156	[2]
Impaired loans | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	0	[1]	0	[2]	0	[1]	0	[2]
Impaired loans | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	0	[1]	0	[2]	0	[1]	0	[2]
Impaired loans | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	6,735	[1]	10,156	[2]	6,735	[1]	10,156	[2]
Covered REO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	2,203	[3]	10,520	[4]	2,203	[3]	10,520	[4]
Covered REO | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	0	[3]	0	[4]	0	[3]	0	[4]
Covered REO | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	0	[3]	0	[4]	0	[3]	0	[4]
Covered REO | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	2,203	[3]	10,520	[4]	2,203	[3]	10,520	[4]
Real estate held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	79,245	[3]	51,624	[4]	79,245	[3]	51,624	[4]
Real estate held for sale | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	0	[3]	0	[4]	0	[3]	0	[4]
Real estate held for sale | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	0	[3]	0	[4]	0	[3]	0	[4]
Real estate held for sale | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	79,245	[3]	51,624	[4]	79,245	[3]	51,624	[4]
Changes Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses related to impaired loans and real estate held for sale	694		1,991		(3,508)		17,965
Changes Measurement | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses related to impaired loans and real estate held for sale	40	[1]	0	[2]	4,241	[1]	(1,311)	[2]
Changes Measurement | Covered REO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses related to impaired loans and real estate held for sale	(7)	[3]	113	[4]	161	[3]	616	[4]
Changes Measurement | Real estate held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses related to impaired loans and real estate held for sale	$ 661	[3]	$ 1,878	[4]	$ (7,910)	[3]	$ 18,660	[4]
[1]	The losses represent remeasurements of collateral-dependent loans.
[2]	The (gains) losses represent remeasurements of collateral-dependent loans.
[3]	The (gains) losses represent aggregate writedowns and charge-offs on real estate held for sale.
[4]	The losses represent aggregate writedowns and charge-offs on real estate held for sale.