Washington Federal (WAFD) 10-K 21 Nov 16 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2016	Nov. 17, 2016	Mar. 31, 2016
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
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		89,081,623
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 2,044,610,449

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
ASSETS
Cash and cash equivalents	$ 450,368	$ 284,049
Available-for-sale securities, at fair value	1,922,894	2,380,563
Held-to-maturity securities, at amortized cost	1,417,599	1,643,216
Loans receivable, net of allowance for loan losses of $113,494 and $106,829	9,910,920	9,170,634
Interest receivable	37,669	40,429
Premises and equipment, net	281,951	276,247
Real estate owned	29,027	61,098
FHLB & FRB stock	117,205	107,198
Bank owned life insurance	208,123	102,496
Intangible assets, including goodwill of $291,503	296,989	299,358
Federal and state income tax assets, net	16,047	14,513
Other assets	199,271	188,523
Total assets	14,888,063	14,568,324
Customer accounts
Transaction deposit accounts	6,005,592	5,820,878
Time deposit accounts	4,595,260	4,810,825
Customer accounts	10,600,852	10,631,703
FHLB advances	2,080,000	1,830,000
Advance payments by borrowers for taxes and insurance	42,898	50,224
Accrued expenses and other liabilities	188,582	100,718
Total liabilities	12,912,332	12,612,645
Stockholders’ equity
Common stock, $1.00 par value, 300,000,000 shares authorized; 134,307,818 and 133,695,803 shares issued; 89,680,847 and 92,936,395 shares outstanding	134,308	133,696
Paid-in capital	1,648,388	1,643,712
Accumulated other comprehensive income (loss), net of taxes	(11,156)	353
Treasury stock, at cost; 44,626,971 and 40,759,408 shares	(739,686)	(651,836)
Retained earnings	943,877	829,754
Total stockholders’ equity	1,975,731	1,955,679
Total liabilities and stockholders’ equity	$ 14,888,063	$ 14,568,324

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Statement of Financial Position [Abstract]
Allowance for probable losses	$ 113,494	$ 106,829
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)	134,307,818	133,695,803
Common stock, shares outstanding (in shares)	89,680,847	92,936,395
Treasury stock, shares (in shares)	44,626,971	40,759,408

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
INTEREST INCOME
Loans receivable	$ 454,085	$ 437,002	$ 430,850
Mortgage-backed securities	62,949	71,392	80,260
Investment securities and cash equivalents	19,759	22,159	22,587
Total Income	536,793	530,553	533,697
INTEREST EXPENSE
Customer accounts	52,485	51,054	58,524
FHLB advances and other borrowings	64,059	66,018	69,553
Interest expense	116,544	117,072	128,077
Net interest income	420,249	413,481	405,620
Provision (release) for loan losses	(6,250)	(11,162)	(15,401)
Net interest income after provision (release) for loan losses	426,499	424,643	421,021
OTHER INCOME
Gain on sale of investment securities	0	9,641	0
Prepayment penalty on long-term debt	0	(10,554)	0
Loan fee income	5,548	8,788	7,706
Deposit fee income	21,738	22,459	14,306
Other income	19,750	10,089	8,647
Noninterest income	47,036	40,423	30,659
OTHER EXPENSE
Compensation and benefits	112,884	119,939	109,730
Occupancy	33,568	33,956	30,452
FDIC insurance premiums	11,824	7,916	11,009
Product delivery	17,060	22,325	14,973
Information technology	30,982	15,976	14,303
Other expense	29,129	24,739	23,542
Noninterest expense	235,447	224,851	204,009
Gain (loss) on real estate owned, net	10,046	9,304	(2,743)
Income before income taxes	248,134	249,519	244,928
Income tax expense
Current	60,773	86,477	75,784
Deferred	23,312	2,726	11,780
Income taxes	84,085	89,203	87,564
NET INCOME	$ 164,049	$ 160,316	$ 157,364
PER SHARE DATA
Basic earnings (in dollars per share)	$ 1.79	$ 1.68	$ 1.56
Diluted earnings (in dollars per share)	1.78	1.67	1.55
Dividends paid on common stock per share (in dollars per share)	$ 0.55	$ 0.54	$ 0.41
Basic weighted average number of shares outstanding (in shares)	91,399,038	95,644,639	101,154,030
Diluted weighted average number of shares outstanding, including dilutive stock options (in shares)	91,912,918	96,053,959	101,590,351

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 164,049	$ 160,316	$ 157,364
Other comprehensive income (loss) net of tax:
Net unrealized gains (losses) on available-for-sale securities	(1,403)	(27,536)	22,924
Reclassification adjustment of net gains from sale of available-for-sale securities included in net income	0	9,641	0
Related tax benefit (expense)	516	6,577	(8,425)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent	(887)	(11,318)	14,499
Net unrealized gain (loss) on long-term borrowing hedges	(16,793)	(14,287)	(268)
Related tax benefit (expense)	6,171	5,250	99
Derivatives qualifying as hedges, net of tax, portion attributable to parent	(10,622)	(9,037)	(169)
Other comprehensive income (loss)	(11,509)	(20,355)	14,330
Comprehensive income	$ 152,540	$ 139,961	$ 171,694

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, 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 (loss)	14,330				14,330
Dividends 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
Restricted stock expense	3,444	249	3,195
Treasury stock purchased	(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 (loss)	(20,355)				(20,355)
Dividends 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 expense	3,573	244	3,329
Treasury stock purchased	(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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	164,049			164,049
Other comprehensive income (loss)	(11,509)				(11,509)
Dividends on common stock	(49,926)			(49,926)
Compensation expense related to common stock options	90		90
Proceeds from exercise of common stock options	9,283	433	8,850
Restricted stock expense	3,659	179	3,480
Repurchase of stock warrants	(7,744)		(7,744)
Treasury stock purchased	(87,850)					(87,850)
Balance, End of period at Sep. 30, 2016	$ 1,975,731	$ 134,308	$ 1,648,388	$ 943,877	$ (11,156)	$ (739,686)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 164,049,000	$ 160,316,000	$ 157,364,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, accretion and restricted stock expense	22,988,000	21,217,000	17,347,000
Cash received from (paid to) FDIC under loss share	1,730,000	720,000	2,502,000
Stock option compensation expense	90,000	231,000	324,000
Provision (release) for loan losses	(6,250,000)	(11,162,000)	(15,401,000)
Loss (gain) on sale of investment securities and real estate owned, net	(16,476,000)	(28,527,000)	(2,510,000)
Loss on extinguishment of debt	0	10,554,000	0
Decrease (increase) in accrued interest receivable	2,760,000	11,608,000	(2,819,000)
Decrease (increase) in FDIC loss share receivable	0	1,795,000	(1,795,000)
Decrease (increase) in federal and state income tax receivable	5,153,000	13,829,000	18,890,000
Decrease (increase) in cash surrender value of bank owned life insurance	(5,627,000)	(2,496,000)	0
Gain (Loss) on Disposition of Property Plant Equipment	(3,563,000)	0	0
Decrease (increase) in other assets	(14,204,000)	(29,220,000)	(17,799,000)
Increase (decrease) in accrued expenses and other liabilities	71,071,000	(5,994,000)	17,612,000
Net cash provided (used) by operating activities	221,721,000	142,871,000	173,715,000
CASH FLOWS FROM INVESTING ACTIVITIES
Origination of loans and principal repayments, net	(622,884,000)	(554,350,000)	(261,401,000)
Loans purchased	(105,420,000)	(279,936,000)	(218,544,000)
FHLB & FRB stock purchase	(36,347,000)	(4,067,000)	0
FHLB & FRB stock redeemed	26,340,000	55,708,000	14,017,000
Available-for-sale securities purchased	(137,591,000)	(315,114,000)	(1,280,477,000)
Principal payments and maturities of available-for-sale securities	537,255,000	721,951,000	609,395,000
Proceeds from sales of available-for-sale investment securities	50,741,000	246,826,000	0
Held-to-maturity securities purchased	0	(259,489,000)	0
Principal payments and maturities of held-to-maturity securities	218,958,000	159,947,000	103,617,000
Net cash received from mergers and acquisitions	0	0	1,776,660,000
Proceeds from sales of real estate owned	61,132,000	74,895,000	89,549,000
Purchase of bank owned life insurance	(100,000,000)	(100,000,000)	0
Proceeds from Sale of Property, Plant, and Equipment	14,685,000	0	0
Premises and equipment purchased and REO improvements	(37,933,000)	(36,860,000)	(51,794,000)
Net cash provided (used) by investing activities	(131,064,000)	(290,489,000)	781,022,000
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase (decrease) in customer accounts	(30,775,000)	(85,073,000)	(226,914,000)
Proceeds from borrowings	1,118,000,000	100,000,000	0
Repayments of borrowings	(868,000,000)	(210,554,000)	0
Proceeds from exercise of common stock options and related tax benefit	9,283,000	2,070,000	10,252,000
Dividends paid on common stock	(49,926,000)	(51,111,000)	(42,065,000)
Repurchase of warrants	(7,744,000)	0	0
Treasury stock purchased	(87,850,000)	(126,728,000)	(104,291,000)
Increase (decrease) in advance payments by borrowers for taxes and insurance	(7,326,000)	21,220,000	(13,439,000)
Net cash provided (used) by financing activities	75,662,000	(350,176,000)	(376,457,000)
Increase (decrease) in cash and cash equivalents	166,319,000	(497,794,000)	578,280,000
Cash and cash equivalents at beginning of year	284,049,000	781,843,000	203,563,000
Cash and cash equivalents at end of year	450,368,000	284,049,000	781,843,000
Non-cash investing activities
Real estate acquired through foreclosure	16,535,000	31,916,000	46,469,000
Cash paid during the year for
Interest	114,506,000	116,226,000	128,733,000
Income taxes	68,507,000	65,720,000	64,372,000
Summary of non-cash activities related to acquisitions
Fair value of assets and intangibles acquired, including goodwill	0	0	80,242,000
Fair value of liabilities assumed	0	0	(1,856,902,000)
Net fair value of acquired assets (liabilities)	$ 0	$ 0	$ (1,776,660,000)

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Company and nature of operations. 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. The Bank conducts its activities through a network of 238 offices located in Washington, Oregon, Idaho, Utah, Arizona, Nevada, New Mexico, and Texas. Basis of presentation and use of estimates. The Company’s accounting and financial reporting policies conform to accounting principles generally accepted in the United States of America (U.S. GAAP). Inter-company balances and transactions have been eliminated in consolidation. In preparing the consolidated financial statements, the Company makes estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and revenues and expenses during the reporting periods and related disclosures. The areas that require application of significant management judgments often result in the need to make estimates about the effect of matters that are inherently uncertain and may change in future periods. Actual results could differ materially from those estimates. In certain instances, amounts in text are presented by rounding to the nearest thousand. The Company's fiscal year end is September 30th. All references to 2016 , 2015 and 2014 represent balances as of September 30, 2016 , September 30, 2015 and September 30, 2014 , or activity for the fiscal years then ended. 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. 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 South Valley Bank and Trust ("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. Covered loans are included within loans receivable on the statement of financial condition. Covered real estate owned are included within real estate owned on the statement of financial condition. FDIC indemnification asset. FDIC indemnification asset 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 loan fee income. Long term borrowing hedges. The Company has entered into 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 so gains and losses are recorded in Other Comprehensive Income to the extent the hedge is effective. Gains and losses on the interest rate swaps are reclassified from OCI to earnings in the period the hedged transaction affects earnings and are included in the same income statement line item that the hedged transaction is recorded. Commercial loan hedges. The Company has entered into interest rate swaps to hedge long term fixed rate commercial loans. These hedges qualify as fair value hedges under ASC 815 and provide for matching of the recognition of the gains and losses on the interest rate swap and the related hedged loan. 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 properties acquired through foreclosure of loans or through acquisitions are recorded initially at fair value less selling costs and are subsequent recorded at lower of cost or fair value. Any 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 during the fourth quarter. 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. The Bank amortizes the core deposit intangibles over their estimated lives using an accelerated method. The table below provides detail regarding the Company's intangible assets. Goodwill Core Deposit Intangible Total (In thousands) Balance at September 30, 2014 $ 291,503 $ 11,406 $ 302,909 Amortization — (3,551 ) (3,551 ) Balance at September 30, 2015 291,503 7,855 299,358 Amortization — (2,369 ) (2,369 ) Balance at September 30, 2016 $ 291,503 $ 5,486 $ 296,989 The table below presents the estimated core deposit intangible asset amortization expense for the next five years. Fiscal Year Expense (In thousands) 2017 $ 1,648 2018 1,204 2019 1,157 2020 1,157 2021 320 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. No stock options were granted in 2016 , 2015 or 2014 . Certain grants of restricted stock 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 awards are expected to vest. See Note N for additional information. 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 135th consecutive quarterly cash dividend totaling $12,421,733 on November 18, 2016 to common stockholders of record on November 4, 2016 .

New Accounting Pronouncements

New Accounting Pronouncements	12 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
New Accounting Pronouncements	NEW ACCOUNTING PRONOUNCEMENTS In August 2016, the FASB issued Accounting Standards Update ("ASU") 2016-15, Classification of Certain Cash Receipts and Cash Payments. The amendments in this ASU address eight specific cash flow issues with the objective of reducing diversity in practice. The specific issues identified include: debt prepayments or extinguishment costs; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. This ASU is effective for fiscal years beginning after December 15, 2017 including interim periods within that reporting period; however, early adoption is permitted. The Company is currently evaluating the guidance to determine its adoption method and does not expect this guidance to have a material impact on its consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses . The amendments in this ASU were issued to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments that are not accounted for at fair value through net income, including loans held for investment, held-to- maturity debt securities, trade and other receivables, net investments in leases and other commitments to extend credit held by a reporting entity at each reporting date. The amendments require that financial assets measured at amortized cost be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The ASU eliminates the current framework of recognizing probable incurred losses and instead requires an entity to use its current estimate of all expected credit losses over the contractual life. The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the financial assets. For purchased financial assets with a more-than-insignificant amount of credit deterioration since origination (“PCD assets”) that are measured at amortized cost, an allowance for expected credit losses is recorded as an adjustment to the cost basis of the asset. Subsequent changes in estimated cash flows would be recorded as an adjustment to the allowance and through the statement of income. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security's cost basis. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. For most debt securities, the transition approach requires a cumulative-effect adjustment to the statement of financial position as of the beginning of the first reporting period the guidance is effective. For other-than-temporarily impaired debt securities and PCD assets, the guidance will be applied prospectively. The Company is currently evaluating the provisions of this ASU to determine the impact the new standard will have on the Company's consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation-Stock Compensation- Improvements to Employee Share-Based Payment Accounting , which involves several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Under the guidance, income tax benefits and deficiencies are to be recognized as income tax expense or benefit in the income statement and the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. An entity should also recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period. Excess tax benefits should be classified along with other income tax cash flows as an operating activity. In regards to forfeitures, the entity may make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest or account for forfeitures when they occur. This ASU is effective for fiscal years beginning after December 15, 2016 including interim periods within that reporting period; however, early adoption is permitted. The Company is currently evaluating the guidance to determine its adoption method and does not expect this guidance to have a material impact on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases . The amendments require lessees to recognize a lease liability, which is a lessee's obligation to make lease payments arising from a lease, and a right-of-use asset, which is an asset that represents the lessee's right to use, or control the use of, a specified asset for the lease term. The guidance also simplifies the accounting for sale and leaseback transactions. The amendments are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted upon issuance. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is currently evaluating the provisions of this ASU to determine the impact the new standard will have on the Company's consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities , to require all equity investments to be measured at fair value with changes in the fair value recognized through net income (other than those accounted for under equity method of accounting or those that result in consolidation of the investee). The amendments in this ASU also require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. This ASU is effective for fiscal years beginning after December 15, 2017 including interim periods within that reporting period. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In September 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which will require that the acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amount is determined. The acquirer is required to also record, in the same period’s financial statements, the effect on earnings as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, an entity is required to present separately on the face of the income statement or disclose in the notes to the financial statements the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. The amendments in ASU 2015-16 are effective for years beginning after December 15, 2015. Early adoption is permitted for reporting periods for which financial statements have not been issued. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In April 2015, the FASB issued ASU 2015-05, Customer’s Accounting for Fees Paid in Cloud Computing Arrangement . The ASU was issued to clarify a customer's accounting for fees paid in a cloud computing arrangement. The amendments provide guidance to customers in determining whether a cloud computing arrangement includes a software license that should be accounted for as internal-use software. If the arrangement does not contain a software license, it would be accounted for as a service contract. The guidance in this ASU is effective for interim and annual periods beginning after December 15, 2015 and can be adopted either (1) prospectively to all arrangements entered into or materially modified after the effective date or (2) retrospectively. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) . The guidance in this update supersedes the revenue recognition requirements in ASC Topic 605, Revenue Recognition, and most industry-specific guidance throughout the industry topics of the codification. For public companies, this update was to be effective for interim and annual periods beginning after December 15, 2016. However, in August 2015, the FASB issued ASU 2015-14, which delayed the effective date of ASU 2014-09 by one year and permits companies to voluntarily adopt the new standard as of the original effective date. The Company does not expect this guidance to have a material impact on its consolidated financial statements.

Investment Securities

Investment Securities	12 Months Ended
	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES The tables below provide detail regarding the amortized cost and fair value of available-for-sale and held-to-maturity investment securities. September 30, 2016 Amortized Cost Gross Unrealized Fair Value Yield Gains Losses (In thousands) Available-for-sale securities U.S. government and agency securities due Within 1 year $ 21,284 $ — $ (59 ) $ 21,225 0.81 % 1 to 5 years 12,477 1,027 (11 ) 13,493 7.94 5 to 10 years 48,134 — (1,589 ) 46,545 1.14 Over 10 years 182,051 27 (3,990 ) 178,088 1.33 Equity Securities Within 1 year — — — — — 1 to 5 years 100,422 1,402 — 101,824 1.90 Corporate debt securities due Within 1 year 278,094 325 (53 ) 278,366 1.33 1 to 5 years 63,481 928 (113 ) 64,296 2.47 5 to 10 years 69,955 — (2,417 ) 67,538 1.96 Over 10 years 50,000 938 — 50,938 3.00 Municipal bonds due 1 to 5 years 2,315 2 — 2,317 1.23 5 to 10 years 1,335 38 — 1,373 2.05 Over 10 years 20,363 3,617 — 23,980 6.45 Mortgage-backed securities Agency pass-through certificates 978,955 17,118 (3,032 ) 993,041 2.58 Commercial MBS 80,318 — (448 ) 79,870 1.91 1,909,184 25,422 (11,712 ) 1,922,894 2.22 Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 1,417,599 24,171 (214 ) 1,441,556 3.18 1,417,599 24,171 (214 ) 1,441,556 3.18 $ 3,326,783 $ 49,593 $ (11,926 ) $ 3,364,450 2.62 % 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 Corporate debt securities 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 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 % The Company purchased $137,591,000 of available-for-sale investment securities and no held-to-maturity investment securities during 2016 . The Company sold $50,741,000 of available-for-sale securities and there were no sales of held-to-maturity investment securities in 2016 . 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, 2016 and September 30, 2015 , by length of time that individual securities in each category have been in a continuous loss position. 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. September 30, 2016 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 debt securities $ — $ — $ (2,582 ) $ 100,467 $ (2,582 ) $ 100,467 U.S. agency securities (11 ) 3,167 (5,638 ) 220,613 (5,649 ) 223,780 Agency pass-through certificates (1,278 ) 301,030 (2,417 ) 232,407 (3,695 ) 533,437 $ (1,289 ) $ 304,197 $ (10,637 ) $ 553,487 $ (11,926 ) $ 857,684 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 debt securities $ (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

Loans Receivable

Loans Receivable	12 Months Ended
	Sep. 30, 2016
Receivables [Abstract]
Loans Receivable (including Covered Loans)	LOANS RECEIVABLE The following table is a summary of loans receivable. September 30, 2016 September 30, 2015 (In thousands) (In thousands) Non-Acquired loans Single-family residential $ 5,621,066 51.3 % $ 5,651,845 57.5 % Construction 1,110,411 10.1 200,509 2.0 Construction - custom 473,069 4.3 396,307 4.0 Land - acquisition & development 116,156 1.1 94,208 1.0 Land - consumer lot loans 101,853 0.9 103,989 1.1 Multi-family 1,118,801 10.2 1,125,722 11.5 Commercial real estate 956,164 8.7 986,270 10.0 Commercial & industrial 946,648 8.6 612,836 6.2 HELOC 134,785 1.2 127,646 1.3 Consumer 137,450 1.3 194,655 2.0 Total non-acquired loans 10,716,403 97.9 % 9,493,987 96.6 % Acquired loans 115,394 1.1 166,293 1.7 Credit impaired acquired loans 89,837 0.8 87,081 0.9 Covered loans 28,974 0.3 75,909 0.8 Total gross loans 10,950,608 100 % 9,823,270 100 % Less: Allowance for probable losses 113,494 106,829 Loans in process 879,484 476,796 Discount on acquired loans 11,306 30,095 Deferred net origination fees 35,404 38,916 Total loan contra accounts 1,039,688 652,636 Net Loans $ 9,910,920 $ 9,170,634 The following summary breaks down the Company's fixed rate and adjustable rate loans by time to maturity or to rate adjustment. September 30, 2016 Fixed-Rate Adjustable-Rate Term To Maturity Gross Loans Term To Rate Adjustment Gross Loans (In thousands) (In thousands) Within 1 year $ 29,428 Less than 1 year $ 1,362,480 1 to 3 years 326,859 1 to 3 years 1,457,584 3 to 5 years 192,202 3 to 5 years 552,402 5 to 10 years 693,099 5 to 10 years 625,852 10 to 20 years 1,020,654 10 to 20 years — Over 20 years 4,690,048 Over 20 years — $ 6,952,290 $ 3,998,318 The following tables provide information regarding loans receivable by loan category and geography. September 30, 2016 Single - Multi- Land - Land - Construction - custom Construction Commercial Commercial Consumer HELOC Total (In thousands) Washington $ 2,926,555 $ 287,999 $ 74,017 $ 59,371 $ 277,877 $ 470,720 $ 482,802 $ 500,540 $ 41,212 $ 88,681 $ 5,209,774 Oregon 664,932 332,311 10,953 12,403 52,709 122,958 171,093 203,377 3,152 13,711 1,587,599 Arizona 546,080 292,830 4,142 9,014 45,536 43,300 38,302 47,584 309 15,838 1,042,935 Other 216,902 2,448 443 11,157 11,228 110,843 277,438 94,215 91,874 1,030 817,578 Utah 474,390 47,374 958 3,448 33,036 143,246 11,499 46,497 39 7,573 768,060 Idaho 284,212 33,043 4,761 3,910 17,120 64,510 34,075 16,627 141 6,973 465,372 New Mexico 186,061 97,699 12,417 1,274 18,128 47,763 68,385 10,860 1,110 13,790 457,487 Texas 202,541 29,458 10,806 979 10,610 107,071 6,151 42,594 1,085 305 411,600 Nevada 157,154 1,127 — 3,012 6,825 — 3,894 16,295 80 1,816 190,203 $ 5,658,827 $ 1,124,289 $ 118,497 $ 104,568 $ 473,069 $ 1,110,411 $ 1,093,639 $ 978,589 $ 139,002 $ 149,717 $ 10,950,608 Percentage by geographic area September 30, 2016 Single - Multi- Land - Land - Construction - custom Construction Commercial Commercial Consumer HELOC Total As % of total gross loans Washington 26.8 % 2.6 % 0.7 % 0.5 % 2.5 % 4.3 % 4.4 % 4.6 % 0.4 % 0.8 % 47.6 % Oregon 6.1 3.0 0.1 0.1 0.5 1.1 1.6 1.9 — 0.1 14.5 Arizona 5.0 2.7 — 0.1 0.4 0.4 0.3 0.4 — 0.2 9.5 Other 2.0 — — 0.2 0.1 1.0 2.5 0.9 0.8 — 7.5 Utah 4.3 0.5 — — 0.3 1.3 0.1 0.4 — 0.1 7.0 Idaho 2.5 0.3 — — 0.2 0.6 0.3 0.2 — 0.1 4.2 New Mexico 1.8 0.9 0.1 — 0.2 0.4 0.6 0.1 — 0.1 4.2 Texas 1.8 0.3 0.1 — 0.1 1.0 0.1 0.4 — — 3.8 Nevada 1.4 — 0.1 — 0.1 — — 0.1 — — 1.7 51.7 % 10.3 % 1.1 % 0.9 % 4.4 % 10.1 % 9.9 % 9.0 % 1.2 % 1.4 % 100 % Percentage by geographic area as a % of each loan type September 30, 2016 Single - Multi- Land - Land - Construction - custom Construction Commercial Commercial Consumer HELOC As % of total gross loans Washington 51.6 % 25.7 % 62.5 % 56.8 % 58.9 % 42.4 % 44.0 % 51.0 % 29.6 % 59.1 % Oregon 11.8 29.6 9.2 11.9 11.1 11.1 15.6 20.8 2.3 9.2 Arizona 9.7 26.0 3.5 8.6 9.6 3.9 3.5 4.9 0.2 10.6 Other 3.8 0.2 0.4 10.7 2.4 10.0 25.4 9.6 66.1 0.7 Utah 8.4 4.2 0.8 3.3 7.0 12.9 1.1 4.8 — 5.1 Idaho 5.0 2.9 4.0 3.7 3.6 5.8 3.1 1.7 0.1 4.7 New Mexico 3.3 8.7 10.5 1.2 3.8 4.3 6.3 1.1 0.8 9.2 Texas 3.6 2.6 9.1 0.9 2.2 9.6 0.6 4.4 0.8 0.2 Nevada 2.8 0.1 — 2.9 1.4 — 0.4 1.7 0.1 1.2 100.0 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 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 unfunded commitments to lend, was $57,153,000 and $55,965,000 at September 30, 2016 and 2015 , respectively. The following table provides additional information on impaired loans, loan commitments and loans serviced for others. September 30, 2016 September 30, 2015 (In thousands) Recorded investment in impaired loans $ 285,243 $ 341,579 TDRs included in impaired loans 261,531 302,713 Allocated reserves on impaired loans 1,980 2,323 Specific reserves on impaired loans 366 275 Average balance of impaired loans for year ended 265,771 333,815 Interest income from impaired loans for year ended 11,314 14,855 Outstanding fixed-rate origination commitments 331,947 230,869 Gross loans serviced for others 80,896 72,083 The following table sets forth information regarding non-accrual loans. September 30, 2016 September 30, 2015 (In thousands) (In thousands) Non-accrual loans: Single-family residential $ 33,148 78.2 % $ 59,074 87.1 % Construction — — 754 1.1 Construction - custom — — 732 1.1 Land - acquisition & development 58 0.1 — — Land - consumer lot loans 510 1.2 1,273 1.9 Multi-family 776 1.8 2,558 3.8 Commercial real estate 7,100 16.7 2,176 3.2 Commercial & industrial 583 1.4 — — HELOC 239 0.6 563 0.8 Consumer — — 680 1.0 Total non-accrual loans $ 42,414 100 % $ 67,810 100 % The following table breaks down delinquent loans by loan category and delinquency bucket. September 30, 2016 Amount of Loans Days Delinquent Based on $ Amount of Loans % based on $ Type of Loan Net of Loans in Process Current 30 60 90 Total (In thousands) Non-acquired loans Single-family residential $ 5,624,783 $ 5,574,384 $ 20,917 $ 5,173 $ 24,309 $ 50,399 0.90 % Construction 497,393 497,393 — — — — — Construction - custom 229,957 229,419 538 — — 538 0.23 Land - acquisition & development 88,662 88,662 — — — — — Land - consumer lot loans 102,386 100,373 816 687 510 2,013 1.97 Multi-family 1,119,042 1,117,453 1,190 399 — 1,589 0.14 Commercial real estate 955,944 955,604 — 183 157 340 0.04 Commercial & industrial 947,703 947,661 — 42 — 42 — HELOC 134,214 133,683 490 — 41 531 0.40 Consumer 136,835 135,926 705 124 80 909 0.66 9,836,919 9,780,558 24,656 6,608 25,097 56,361 0.57 Acquired loans 115,394 114,770 124 2 498 624 0.54 Credit impaired acquired loans 89,837 84,625 227 142 4,843 5,212 5.80 Covered loans 28,974 22,891 — 262 5,821 6,083 20.99 Total Loans $ 10,071,124 $ 10,002,844 $ 25,007 $ 7,014 $ 36,259 $ 68,280 0.68 % Delinquency % 99.32% 0.25% 0.07% 0.36% 0.68% The percentage of total delinquent loans was 0.68% as of September 30, 2016 , as compared 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 Company 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, 2016 , the outstanding balance of TDR's was $261,531,000 as compared to $302,713,000 as of September 30, 2015 . As of September 30, 2016 , 96.2% of the restructured loans were performing. Single-family residential loans comprised 87.2% of TDR loans as of September 30, 2016 . The Company 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 table provides information related to loans that were modified in a TDR during the periods presented. Twelve Months Ended September 30, 2016 Twelve Months Ended September 30, 2015 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 120 $ 23,541 $ 23,541 62 $ 13,378 $ 13,378 Construction — — — 2 701 701 Land - consumer lot loans 10 970 970 9 1,546 1,546 Commercial real estate 7 2,523 2,523 3 3,175 3,175 HELOC 1 126 126 1 50 50 Consumer 1 24 24 1 80 80 139 $ 27,184 $ 27,184 78 $ 18,930 $ 18,930 The following table provides information on payment defaults occurring during the periods presented where the loan had been modified in a TDR within 12 months of the payment default. Twelve Months Ended September 30, 2016 Twelve Months Ended September 30, 2015 Number of Recorded Number of Recorded TDRs That Subsequently Defaulted: Contracts Investment Contracts Investment (In thousands) (In thousands) Single-family residential 17 $ 4,875 18 $ 2,917 Construction 1 279 — — Land - consumer lot loans 5 606 2 301 Commercial real estate 2 326 — — 25 $ 6,086 20 $ 3,218 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, 2016 and 2015 . Twelve Months Ended September 30, 2016 Twelve Months Ended September 30, 2015 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 $ 72,705 $ 111,300 $ 7,204 $ 187,080 $ 97,125 $ 135,826 $ 14,513 $ 275,862 Net reclassification from non-accretable 4,867 — — — 6,307 — 346 — Accretion (18,730 ) 18,730 (2,982 ) 2,982 (30,727 ) 30,727 (7,655 ) 7,655 Transfers to REO — (175 ) — — — (2,975 ) — (150 ) Payments received, net — (38,094 ) — (58,930 ) — (52,278 ) — (96,287 ) Ending Balance $ 58,842 $ 91,761 $ 4,222 $ 131,132 $ 72,705 $ 111,300 $ 7,204 $ 187,080 At September 30, 2016 and September 30, 2015 , 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 loans receivable. The FDIC loss share coverage for the acquired commercial loans from the former Home Valley Bank expired after 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 for another four years. The outstanding principal balance of covered loans was $28,974,000 as of September 30, 2016 , as compared to $75,909,000 as of September 30, 2015 . The discount balance related to the covered loans was $2,738,000 as of September 30, 2016 . The following table shows the year to date activity for the FDIC indemnification asset. Twelve Months Ended September 30, 2016 Twelve Months Ended September 30, 2015 (In thousands) Balance at beginning of year $ 16,275 $ 36,860 Additions and impairment — (1,795 ) Payments received (1,730 ) (720 ) Amortization (2,012 ) (18,588 ) Accretion 236 518 Balance at end of year $ 12,769 $ 16,275

Allowance for Losses on Loans

Allowance for Losses on Loans	12 Months Ended
	Sep. 30, 2016
Receivables [Abstract]
Allowance for Losses on Loans	ALLOWANCE FOR LOSSES ON LOANS The following tables summarize the activity in the allowance for loan losses. Twelve Months Ended September 30, 2016 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 47,347 $ (3,106 ) $ 3,251 $ (9,696 ) $ 37,796 Construction 6,680 — 745 12,413 19,838 Construction - custom 990 (60 ) 60 90 1,080 Land - acquisition & development 5,781 (42 ) 8,220 (7,936 ) 6,023 Land - consumer lot loans 2,946 (732 ) 5 316 2,535 Multi-family 5,304 — — 1,621 6,925 Commercial real estate 8,960 (103 ) 1,812 (2,081 ) 8,588 Commercial & industrial 24,980 (941 ) 2,933 1,036 28,008 HELOC 902 (54 ) 21 (56 ) 813 Consumer 2,939 (962 ) 2,018 (2,107 ) 1,888 $ 106,829 $ (6,000 ) $ 19,065 $ (6,400 ) $ 113,494 Twelve Months Ended 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 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 The Company recorded a release of allowance for loan losses of $6,400,000 during the year ended September 30, 2016 , as compared to a release of $11,162,000 for the year ended September 30, 2015 . The credit quality of the portfolio has been improving significantly and economic conditions are more stable. The Company had recoveries, net of charge-offs, of $13,065,000 for the year ended September 30, 2016 , compared with net recoveries of $5,370,000 for the year ended September 30, 2015 . 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. Non-accrual loans decreased to $42,414,000 as of September 30, 2016 from $67,810,000 as of September 30, 2015 . Non-performing assets (“NPAs”) totaled $71,441,000 , or 0.48% of total assets, at September 30, 2016 , compared to $128,908,000 , or 0.88% of total assets, as of September 30, 2015 . Acquired loans, including covered loans, are not classified as non-performing loans because they are recorded at fair value at acquisition and reflect lifetime estimated losses at that time. As of September 30, 2016 , $20,175,000 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, 2016 or September 30, 2015 . At September 30, 2016 , $113,128,000 of the allowance was calculated under the formulas contained in our general allowance methodology and the remaining $366,000 represents specific reserves on loans that were deemed to be impaired. The following tables show a summary of loans collectively and individually evaluated for impairment and the related allocation of general and specific reserves. September 30, 2016 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 $ 37,536 $ 5,585,912 0.7 % $ 260 $ 19,629 1.3 % Construction 19,838 498,450 4.0 — — — Construction - custom 1,080 229,298 0.5 — 330 — Land - acquisition & development 6,022 90,850 6.6 2 850 0.2 Land - consumer lot loans 2,535 92,828 2.7 — 558 — Multi-family 6,911 1,091,974 0.6 13 1,505 0.9 Commercial real estate 8,497 957,380 0.9 91 11,157 0.8 Commercial & industrial 28,008 966,930 2.9 — — — HELOC 813 133,203 0.6 — 239 — Consumer 1,888 137,315 1.4 — 3 — $ 113,128 $ 9,784,140 1.2 % $ 366 $ 34,271 1.1 % ___________________ (1) Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans 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 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 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). September 30, 2016 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,570,634 $ — $ 50,432 $ — $ — $ 5,621,066 Construction 1,098,549 8,595 3,267 — — 1,110,411 Construction - custom 473,069 — — — — 473,069 Land - acquisition & development 110,125 — 6,031 — — 116,156 Land - consumer lot loans 100,862 — 991 — — 101,853 Multi-family 1,112,342 3,237 3,222 — — 1,118,801 Commercial real estate 928,032 13,446 14,686 — — 956,164 Commercial & industrial 900,571 7,160 38,917 — — 946,648 HELOC 134,298 — 487 — — 134,785 Consumer 137,367 — 83 — — 137,450 Total non-acquired loans 10,565,849 32,438 118,116 — — 10,716,403 Acquired loans 108,616 47 6,731 — — 115,394 Credit impaired acquired loans 60,985 — 28,852 — — 89,837 Covered loans 28,647 — 327 — — 28,974 Total gross loans $ 10,764,097 $ 32,485 $ 154,026 $ — $ — $ 10,950,608 Total grade as a % of total gross loans 98.3 % 0.3 % 1.4 % — % — % 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 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 % — % — % The following tables provide information on loans based on payment activity. September 30, 2016 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) (In thousands) Single-family residential $ 5,587,919 99.4 % $ 33,148 0.6 % Construction 1,110,411 100.0 — — Construction - custom 473,069 100.0 — — Land - acquisition & development 116,097 99.9 58 0.1 Land - consumer lot loans 101,343 99.5 510 0.5 Multi-family 1,118,025 99.9 776 0.1 Commercial real estate 949,064 99.3 7,100 0.7 Commercial & industrial 946,065 99.9 583 0.1 HELOC 134,546 99.8 239 0.2 Consumer 137,450 100.0 — — $ 10,673,989 99.6 % $ 42,414 0.4 % 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 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 % The following tables provide information on impaired loans by loan category. September 30, 2016 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) Impaired loans with no related allowance recorded: Single-family residential $ 9,627 $ 11,366 $ — $ 6,511 Construction — — — — Construction - custom — — — — Land - acquisition & development 138 9,001 — 614 Land - consumer lot loans 499 609 — 317 Multi-family 394 3,972 — 638 Commercial real estate 11,741 21,301 — 6,260 Commercial & industrial 1,030 3,082 — 863 HELOC 209 315 — 165 Consumer 74 550 — 111 23,712 50,196 — 15,479 Impaired loans with an allowance recorded: Single-family residential 228,186 232,595 3,809 216,632 Construction — — — — Construction - custom — — — — Land - acquisition & development 1,154 2,094 1 1,766 Land - consumer lot loans 9,630 10,678 1 9,548 Multi-family 1,505 1,505 13 1,522 Commercial real estate 19,434 22,848 91 19,311 Commercial & industrial — — — — HELOC 1,506 1,521 — 1,413 Consumer 116 306 — 100 261,531 271,547 3,915 (1) 250,292 Total: Single-family residential 237,813 243,961 3,809 223,143 Construction — — — — Construction - custom — — — — Land - acquisition & development 1,292 11,095 1 2,380 Land - consumer lot loans 10,129 11,287 1 9,865 Multi-family 1,899 5,477 13 2,160 Commercial real estate 31,175 44,149 91 25,571 Commercial & industrial 1,030 3,082 — 863 HELOC 1,715 1,836 — 1,578 Consumer 190 856 — 211 $ 285,243 $ 321,743 $ 3,915 (1) $ 265,771 ____________________ (1) Includes $366,000 of specific reserves and $3,549,000 included in the general reserves. September 30, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) Impaired loans with no related allowance recorded: Single-family residential $ 17,250 $ 19,644 $ — $ 14,069 Construction 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 Impaired loans with an allowance recorded: Single-family residential 259,461 263,268 6,678 260,028 Construction 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 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.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS ASC 820 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. ASC 820 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 the Company's 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 Available-for-sale investment securities and derivative contracts Securities available for sale are recorded at fair value on a recurring basis. The fair value of debt securities are priced using model pricing based on the securities' relationship to other benchmark quoted prices as provided by an independent third party, and under GAAP are considered a Level 2 input method. Securities that are traded on active exchanges, including the Company's equity securities, are measured using the closing price in an active market and are considered a Level 1 input method. The Company offers interest rate swaps to its variable rate borrowers who want to manage their interest rate risk. At the same time, the Company enters into the opposite trade with a counter party to offset its interest rate risk. The Company has also entered into a commercial loan hedge as well as long term borrowing hedges using 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 and ASC 825 level of assets measured at fair value on a recurring basis. September 30, 2016 Level 1 Level 2 Level 3 Total (In thousands) Available-for-sale securities Equity securities $ 101,824 $ — $ — $ 101,824 U.S. government and agency securities — 259,351 — 259,351 Municipal bonds — 27,670 — 27,670 Corporate debt securities — 461,138 — 461,138 Mortgage-backed securities Agency pass-through certificates — 993,041 — 993,041 Commercial MBS — 79,870 — 79,870 Other debt securities — — — — Total Available-for-sale securities 101,824 1,821,070 — 1,922,894 Interest rate contracts — 20,895 — 20,895 Total Financial Assets $ 101,824 $ 1,841,965 $ — $ 1,943,789 Financial Liabilities Interest rate contracts $ — $ 20,895 $ — $ 20,895 Commercial loan hedges — 3,312 — 3,312 Long term borrowing hedges — 31,347 — 31,347 Total Financial Liabilities $ — $ 55,554 $ — $ 55,554 There were no transfers between, into and/or out of Levels 1, 2 or 3 during the year ended September 30, 2016 . September 30, 2015 Level 1 Level 2 Level 3 Total (In thousands) Available-for-sale securities Equity securities $ 101,952 $ — $ — $ 101,952 U.S. government and agency securities — 482,464 — 482,464 Municipal bonds — 27,123 — 27,123 Corporate debt securities — 505,800 — 505,800 Mortgage-backed securities Agency pass-through certificates — Commercial MBS — 1,160,518 — 1,160,518 Other debt securities — 102,706 — 102,706 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 hedges — 966 — 966 Long term borrowing hedges — 14,555 — 14,555 Total Financial Liabilities $ — $ 27,400 $ — $ 27,400 There were no transfers between, into and/or out of Level 1, 2 or 3 during the year ended September 30, 2015 . Measured on a Nonrecurring Basis Impaired Loans & Real Estate Owned Real estate owned ("REO") consists principally of properties acquired through foreclosure. From time to time, and on a nonrecurring basis, adjustments using fair value measurements are recorded to reflect increases or decreases 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 owned requires additional adjustments, either as a result of an updated appraised value or when there is no observable market price, the Company classifies the impaired loan or real estate owned as Level 3. Level 3 assets recorded at fair value on a nonrecurring basis represent impaired loans for which a specific reserve is recorded or a partial charge-off was recorded based on the fair value of collateral, as well as real estate owned where the fair value of the property was less than the cost basis. The following table presents the recorded balance of assets that were measured at estimated fair value on a nonrecurring basis for the periods presented, and the total gains (losses) resulting from those fair value adjustments for the periods presented. These estimated fair values are shown gross of estimated selling costs: September 30, 2016 Three Months Ended September 30, 2016 Twelve Months Ended September 30, 2016 Level 1 Level 2 Level 3 Total Total Gains (Losses) (In thousands) Impaired loans (1) $ — $ — $ 17,476 $ 17,476 $ (474 ) $ (4,236 ) Real estate owned (2) — — 25,190 25,190 (1,003 ) (3,947 ) Balance at end of period $ — $ — $ 42,666 $ 42,666 $ (1,477 ) $ (8,183 ) ___________________ (1) The gains (losses) represent remeasurements of collateral-dependent impaired loans. (2) The gains (losses) represent aggregate writedowns and charge-offs on real estate owned. September 30, 2015 Three Months Ended September 30, 2015 Twelve Months 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 ) Real estate owned (2) — — 81,448 81,448 (654 ) 7,749 Balance at end of period $ — $ — $ 88,183 $ 88,183 $ (694 ) $ 3,508 ___________________ (1) The gains (losses) represent remeasurements of collateral-dependent impaired loans. (2) The gains (losses) represent aggregate writedowns and charge-offs on real estate owned. 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 that were 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 loans is used for measurement of non collateral-dependent loans to test for impairment. The Company estimates the future cash flows and then discounts those using the contractual interest rate. Real estate owned - When a loan is reclassified from loan status to real estate owned 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. 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 below, such amounts have not been comprehensively revalued for purposes of these financial statements since the dates shown, and therefore, estimates of fair value subsequent to those dates may differ significantly from the amounts presented below. September 30, 2016 September 30, 2015 Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (In thousands) Financial assets Cash and cash equivalents 1 $ 450,368 $ 450,368 $ 284,049 $ 284,049 Available-for-sale securities: Equity securities 1 101,824 101,824 101,952 101,952 U.S. government and agency securities 2 259,351 259,351 482,464 482,464 Municipal bonds 2 27,670 27,670 27,123 27,123 Corporate debt securities 2 461,138 461,138 505,800 505,800 Mortgage-backed securities Agency pass-through certificates 2 993,041 993,041 1,160,518 1,160,518 Commercial MBS 2 79,870 79,870 102,706 102,706 Total available-for-sale securities 1,922,894 1,922,894 2,380,563 2,380,563 Held-to-maturity securities: Mortgage-backed securities Agency pass-through certificates 2 1,417,599 1,441,556 1,643,216 1,637,420 Total held-to-maturity securities 1,417,599 1,441,556 1,643,216 1,637,420 Loans receivable 3 9,910,920 10,414,794 9,170,634 9,667,750 FDIC indemnification asset 3 12,769 12,095 16,275 15,522 FHLB and FRB stock 2 117,205 117,205 107,198 107,198 Other assets - interest rate contracts 2 20,895 20,895 11,879 11,879 Financial liabilities Customer accounts 2 10,600,852 10,184,321 10,631,703 10,004,290 FHLB advances and other borrowings 2 2,080,000 2,184,671 1,830,000 1,938,384 Other liabilities - interest rate contracts 2 20,895 20,895 11,879 11,879 Other liabilities - commercial loan hedges 2 3,312 3,312 966 966 Other liabilities - long term borrowing hedges 2 31,347 31,347 14,555 14,555 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 primarily priced using model pricing based on the securities' relationship to other benchmark quoted prices as provided by an independent third party, and are considered a Level 2 input method. Equity securities which are exchange traded 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 par 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 – 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. 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. Long Term Borrowing Hedges – The fair value of the interest rate swaps are estimated by a third party pricing service using a discounted cash flow technique.

Derivatives and Hedging Activit

Derivatives and Hedging Activities Derivatives and Hedging Activities	12 Months Ended
	Sep. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	DERIVATIVES AND HEDGING ACTIVITIES The Company periodically enters into certain interest rate swap agreements in order to provide commercial loan customers the ability to convert from variable to fixed interest rate payments, while the Company retains a variable rate loan. Under these agreements, the Company enters into a variable rate loan agreement and a swap agreement with the client. The swap agreement effectively converts the client’s variable rate loan into a fixed rate. The Company enters into a corresponding swap agreement with a third party in order to offset its exposure on the variable and fixed components of the client's swap agreement. The Company had $840,935,000 and $439,416,000 notional in interest rate swaps to hedge this exposure as of September 30, 2016 and September 30, 2015 , respectively. As of September 30, 2016 , $34,432,000 of the outstanding notional balance related to a related party loan. The interest rate swaps are derivatives under FASB ASC 815, Derivatives and Hedging, with changes in fair value recorded in earnings. There was no net impact to the statement of operations for the year ended September 30, 2016 as the changes in value for the asset and liability side of the swaps offset each other. The Company has also entered into interest rate swaps, some of which are forward-starting, to convert certain existing and future short-term borrowings to fixed rate payments. The primary purpose of these hedges is to mitigate the risk of rising interest rates, specifically LIBOR rates, which are a benchmark for the short term borrowings. The hedging program qualifies as a cash flow hedge under ASC 815, which provides for offsetting 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 existing or future short-term fixed rate borrowings over the term of the interest rate swap. The change in the fair value of the interest rate swaps is recorded in other comprehensive income. The Company had $700,000,000 and $400,000,000 notional in interest rate swaps to hedge existing and anticipated future borrowings as of September 30, 2016 and September 30, 2015 , respectively. The unrealized loss, gross of the related tax benefit, on these interest rate swaps as of September 30, 2016 was $31,347,000 . The Company has also entered into an interest rate swap to hedge the interest rate risk of an individual fixed rate commercial loan and this relationship qualifies as a fair value hedge under ASC 815, which provides for offsetting of the recognition of gains and losses of the interest rate swap and the hedged item. The Company hedges this loan using an interest rate swap with a notional amount of $54,155,000 and $54,815,000 as of September 30, 2016 and September 30, 2015 , respectively. The following table presents the fair value and balance sheet classification of derivatives outstanding. Asset Derivatives Liability Derivatives September 30, 2016 September 30, 2015 September 30, 2016 September 30, 2015 (In thousands) Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Interest rate contracts Other assets $ 20,895 Other assets $ 11,879 Other liabilities $ 20,895 Other liabilities $ 11,879 Commercial loan hedges Other assets — Other assets — Other liabilities 3,312 Other liabilities 966 Long term borrowing hedges Other assets — Other assets — Other liabilities 31,347 Other liabilities 14,555 $ 20,895 $ 11,879 $ 55,554 $ 27,400

Interest Receivable

Interest Receivable	12 Months Ended
	Sep. 30, 2016
Receivables [Abstract]
Interest Receivable	INTEREST RECEIVABLE The following table provides a summary of interest receivable by interest earning asset type. September 30, 2016 September 30, 2015 (In thousands) Loans receivable $ 29,858 $ 30,930 Mortgage-backed securities 5,670 6,695 Investment securities 2,141 2,804 $ 37,669 $ 40,429 Interest receivable was $37,669,000 at September 30, 2016 as compared to $40,429,000 as of September 30, 2015 . The decrease is primarily due to lower rates as the average period rate for earning assets was 3.58% as of September 30, 2016 compared to 3.63% as of September 30, 2015 .

Premises and Equipment

Premises and Equipment	12 Months Ended
	Sep. 30, 2016
Property, Plant and Equipment [Abstract]
Premises and Equipment	PREMISES AND EQUIPMENT The following table provides a summary of premises and equipment by asset type. September 30, 2016 September 30, 2015 Estimated Useful Life (In thousands) Land — $ 109,414 $ 113,347 Buildings 25 - 40 143,841 147,757 Leasehold improvements 7 - 15 18,365 10,193 Furniture, software and equipment 2 - 10 115,199 89,919 386,819 361,216 Less accumulated depreciation and amortization (104,868 ) (84,969 ) $ 281,951 $ 276,247 The Company has non-cancelable operating leases for certain branch offices. Future minimum net rental commitments for all non-cancelable leases, including maintenance and associated costs, are as follows: $4,902,000 for 2017, $3,942,000 for 2018, $3,422,000 for 2019, $3,228,000 for 2020, $2,538,000 for 2021 and $13,159,000 thereafter. Rental expense, including amounts paid under month-to-month cancelable leases, amounted to $5,300,000 , $6,600,000 and $6,600,000 in 2016 , 2015 , and 2014 , respectively.

Customer Accounts

Customer Accounts	12 Months Ended
	Sep. 30, 2016
Banking and Thrift [Abstract]
Customer Accounts	CUSTOMER ACCOUNTS The following table provides the composition of the Company's customer accounts, including interest rate buckets and maturity buckets for time deposits. September 30, 2016 September 30, 2015 (In thousands) Checking accounts, .15% and under $ 2,721,721 $ 2,555,766 Passbook and statement accounts, .10% and under 820,980 700,794 Insured money market accounts, .01% to .15% 2,462,891 2,564,318 Time deposit accounts Less than 1.00% 3,268,272 3,126,119 1.00% to 1.99% 1,292,612 1,177,356 2.00% to 2.99% 34,376 501,409 3.00% to 3.99% — 5,156 4.00% and higher — 785 Total time deposits 4,595,260 4,810,825 $ 10,600,852 $ 10,631,703 Time deposit maturities are as follows: September 30, 2016 September 30, 2015 (In thousands) Within 1 year $ 2,894,900 $ 2,862,313 1 to 2 years 798,309 1,068,792 2 to 3 years 293,058 321,118 Over 3 years 608,993 558,602 $ 4,595,260 $ 4,810,825 Customer accounts over $250,000 totaled $2,250,622,000 as of September 30, 2016 and $2,096,690,000 as of September 30, 2015 . Interest expense on customer accounts consisted of the following: Year ended September 30, 2016 2015 2014 (In thousands) Checking accounts $ 1,491 $ 1,036 $ 1,259 Passbook and statement accounts 734 660 607 Insured money market accounts 3,285 3,631 4,574 Time deposit accounts 47,425 46,273 52,636 52,935 51,600 59,076 Less early withdrawal penalties (450 ) (546 ) (552 ) $ 52,485 $ 51,054 $ 58,524 Weighted average interest rate at end of year 0.50 % 0.48 % 0.51 % Weighted daily average interest rate during the year 0.50 % 0.48 % 0.57 %

FHLB Advances and Other Borrowi

FHLB Advances and Other Borrowings	12 Months Ended
	Sep. 30, 2016
Banking and Thrift [Abstract]
FHLB Advances and Other Borrowings	FHLB ADVANCES AND OTHER BORROWINGS The table below shows the maturity dates of outstanding FHLB advances. September 30, 2016 September 30, 2015 (In thousands) FHLB advances Within 1 year $ 200,000 $ 250,000 1 to 3 years 880,000 750,000 4 to 5 years 700,000 430,000 More than 5 years 300,000 400,000 $ 2,080,000 $ 1,830,000 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. 2016 2015 2014 (In thousands) Weighted average interest rate at end of year 3.15 % 3.35 % 3.52 % Weighted daily average interest rate during the year 3.22 % 3.57 % 3.56 % Daily average of FHLB advances during the year $ 1,992,434 $ 1,848,904 $ 1,955,205 Maximum amount of FHLB advances at any month end $ 2,080,000 $ 1,930,000 $ 2,205,000 Interest expense during the year (excludes interest rate swap expense) $ 64,058 $ 64,331 $ 68,307 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, 2016 , 2015 and 2014 , 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.

Income Taxes

Income Taxes	12 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The table below provides a summary of the Company's tax assets and liabilities, including deferred tax assets and deferred tax liabilities by major source. Deferred tax balances represent temporary differences between the tax basis and the financial statement carrying amounts of assets and liabilities. September 30, 2016 September 30, 2015 (In thousands) Deferred tax assets Loan loss reserves $ 45,531 $ 43,749 REO reserves 4,018 11,213 Valuation adjustment on available-for-sale securities and cash flow hedges 6,482 — Asset purchase tax basis difference (net) — 5,973 Delinquent accrued interest 2,812 3,069 FDIC loss share guarantee receivable 9,598 7,803 Other, net 3,210 3,891 Total deferred tax assets 71,651 75,698 Deferred tax liabilities Federal Home Loan Bank stock dividends 24,135 24,135 Valuation adjustment on available-for-sale securities and cash flow hedges — 205 Asset purchase tax basis difference (net) 2,830 Loan origination costs 14,826 13,875 Depreciation 34,936 25,934 Total deferred tax liabilities 76,727 64,149 Net deferred tax asset (liability) (5,076 ) 11,549 Current tax asset 21,123 2,964 Net tax asset $ 16,047 $ 14,513 The table below presents a reconciliation of the statutory federal income tax rate to the Company's effective income tax rate. Year ended September 30, 2016 2015 2014 Statutory income tax rate 35 % 35 % 35 % State income tax 1 2 2 Other differences (2 ) (1 ) (1 ) Effective income tax rate 34 % 36 % 36 % The following table summarizes the Company's income tax expense (benefit) for the respective periods. Year ended September 30, 2016 2015 2014 (In thousands) Federal: Current $ 57,173 $ 79,841 $ 70,797 Deferred 21,961 3,244 10,591 79,134 83,085 81,388 State: Current $ 3,600 $ 6,636 $ 4,987 Deferred 1,351 (518 ) 1,189 4,951 6,118 6,176 Total Current 60,773 86,477 75,784 Deferred 23,312 2,726 11,780 $ 84,085 $ 89,203 $ 87,564 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 its results of operations or financial position. The Company's liability for uncertain tax positions was $105,000 as of September 30, 2016 and $110,000 as of September 30, 2015 . These amounts, if recognized, would affect the Company's effective tax rate. The Company records interest and penalties related to uncertain tax positions in income tax expense. The Company's federal income tax returns are open for the tax years 2013 forward. 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 2013 through 2016 .

401(k) and Employee Stock Owner

401(k) and Employee Stock Ownership Plan	12 Months Ended
	Sep. 30, 2016
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 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 . Effective January 1, 2016, new employees become eligible to participate in the Plan upon completion of one year of service. Such eligible employees become a participant in the Plan on the first day of the calendar quarter (January 1, April 1, July 1 or October 1) coincident with or following the completion of the one year of service requirement. The Plan defines “year of service” as a 12-month period in which the eligible employee works at least 1,000 hours of service and the first eligibility service period starts on the first day of employment. After the first 12-month eligibility service period, if the Plan needs to measure another eligibility service period (e.g., if the employee does not complete 1,000 hours of service in the first 12-month period), the Plan will measure the eligibility service period on a Plan Year basis. 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 $7,600,000 , $8,700,000 and $7,314,000 for the years ended 2016 , 2015 and 2014 , respectively.

Stock Award Plans

Stock Award Plans	12 Months Ended
	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Award Plans	STOCK AWARD PLANS The Company's stock based compensation plan ('2011 Incentive Plan') provides for grants of stock options and restricted stock. Stockholders authorized 5,000,000 shares of common stock to be reserved pursuant to the 2011 Incentive Plan and 3,348,400 shares remain available for issuance as of September 30, 2016 . 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 stock 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 under the 2011 Incentive Plan during 2016 , 2015 and 2014 . A summary of stock option activity and changes during the year are as follows. Options Shares Weighted Weighted Aggregate Outstanding at September 30, 2015 1,027,374 $ 21.64 3 $1,867 Granted — — Exercised (438,456 ) 21.51 Forfeited (129,475 ) 22.32 Outstanding at September 30, 2016 459,443 $ 21.47 2 $ 2,392 Exercisable at September 30, 2016 459,443 $ 21.47 2 $ 2,392 The table below presents other information regarding stock options. Year ended September 30, 2016 2015 2014 (In thousands, except fair value of options granted) Compensation cost for stock options $ 89 $ 232 $ 324 Weighted average grant date fair value per stock option 2.73 2.96 2.95 Total intrinsic value of options exercised 1,651 831 1,136 Grant date FV of options exercised 1,422 368 1,962 Cash received from option exercises 9,283 2,069 10,142 Tax benefit realized for option exercises — — 159 The following is a summary of activity related to non-vested stock options. Year ended September 30, 2016 2015 2014 Non-vested Stock Options Options Outstanding Weighted Options Outstanding Weighted Options Outstanding Weighted Outstanding at beginning of period 69,287 $ 3.85 145,795 $ 3.87 287,750 $ 3.44 Granted — — — — — — Vested (62,227 ) 3.91 (61,018 ) 3.88 (119,520 ) 2.88 Forfeited (7,060 ) 3.89 (15,490 ) 3.90 (22,435 ) 3.63 Outstanding at end of period — $ — 69,287 $ 3.85 145,795 $ 3.87 As of September 30, 2016 , there was no remaining unrecognized compensation cost for stock options. Restricted Stock Awards: The Company grants shares of restricted stock pursuant to the 2011 Incentive Plan. The restricted stock grants are subject to a service condition and vest over a period of one to seven years. Certain grants of restricted stock to executive officers are also subject to additional performance conditions based upon meeting certain total shareholder return targets pre-established by the Board. The Company had a total of 490,363 shares of restricted stock outstanding as of September 30, 2016 , with a fair market value at the date of grant of $7,845,808 . The following table summarizes information about nonvested restricted stock activity. Year ended September 30, 2016 2015 2014 Non-vested Restricted Stock Outstanding Weighted Outstanding Weighted Outstanding Weighted Outstanding at beginning of period 521,302 $ 15.03 515,845 $ 14.10 480,904 $ 11.52 Granted 229,450 17.20 301,750 $ 14.26 300,500 15.43 Vested (165,965 ) 15.96 (223,043 ) 13.24 (202,014 ) 11.68 Forfeited (94,424 ) 13.64 (73,250 ) 10.72 (63,545 ) 8.50 Outstanding at end of period 490,363 $ 16.00 521,302 $ 15.03 515,845 $ 14.10 Compensation expense related to restricted stock awards was $3,357,108 , $3,271,564 , and $3,085,081 for the years ended 2016 , 2015 and 2014 , respectively.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Sep. 30, 2016
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, 2016 and 2015 , 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 Ratio Ratio September 30, 2016 (In thousands) Common Equity Tier 1 risk-based capital ratio: The Company $ 1,690,380 17.54 % 4.50 % NA The Bank 1,668,828 17.32 4.50 6.50 % Tier 1 risk-based capital ratio: The Company 1,690,380 17.54 6.00 NA The Bank 1,668,828 17.32 6.00 8.00 Total risk-based capital ratio: The Company 1,807,740 18.76 8.00 NA The Bank 1,786,188 18.54 8.00 10.00 Tier 1 leverage ratio: The Company 1,690,380 11.60 4.00 NA The Bank 1,668,828 11.45 4.00 5.00 September 30, 2015 Common Equity Tier 1 risk-based capital ratio: The Company $ 1,658,985 18.81 % 4.50 % NA The Bank 1,652,569 18.73 4.50 6.50 % Tier 1 risk-based capital ratio: The Company 1,658,985 18.81 6.00 NA The Bank 1,652,569 18.73 6.00 8.00 Total risk-based capital ratio: The Company 1,769,587 20.07 8.00 NA The Bank 1,763,171 19.98 8.00 10.00 Tier 1 leverage ratio: The Company 1,658,985 11.71 4.00 N/A The Bank 1,652,569 11.66 4.00 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 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 and the change 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 sufficient capital to meet these new rules. The Company and the Bank are subject to regulatory restrictions on paying dividends. The Company has an ongoing stock repurchase program and 3,867,563 shares were repurchased during 2016 at a weighted average price of $22.72 . In 2015 , 5,841,204 shares were repurchased at a weighted average price of $21.70 . As of September 30, 2016 , Management had authorization from the Board of Directors to repurchase up to 5,039,310 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 . In September 2016, the Company repurchased 892,240 of these warrants with a value of $7,718,158 . Warrants remaining outstanding were 808,616 as of September 30, 2016 and 1,700,856 as of September 30, 2015 , and they have an expiration date of November 14, 2018. The outstanding warrants are considered 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, 2016 2015 2014 Weighted average shares outstanding 91,399,038 95,644,639 101,154,030 Weighted average dilutive warrants 440,366 340,016 352,171 Weighted average dilutive options 73,514 69,304 84,150 Weighted average diluted shares 91,912,918 96,053,959 101,590,351 Net income (In thousands) $ 164,049 $ 160,316 $ 157,364 Basic EPS $ 1.79 $ 1.68 $ 1.56 Diluted EPS 1.78 1.67 1.55

Financial Information - Washing

Financial Information - Washington Federal, INC.	12 Months Ended
	Sep. 30, 2016
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, 2016 September 30, 2015 (In thousands) Assets Cash $ 24,300 $ 7,628 Other assets 15 — Investment in subsidiary 1,954,179 1,949,262 Total assets $ 1,978,494 $ 1,956,890 Liabilities Other liabilities $ 2,763 $ 1,211 Total liabilities 2,763 1,211 Stockholders’ equity Total stockholders’ equity 1,975,731 1,955,679 Total liabilities and stockholders’ equity $ 1,978,494 $ 1,956,890 Condensed Statements of Operations Twelve Months Ended September 30, 2016 2015 2014 (In thousands) Income Dividends from subsidiary $ 148,000 $ 175,000 $ 70,000 Total Income 148,000 175,000 70,000 Expense Miscellaneous 435 439 485 Total expense 435 439 485 Net income (loss) before equity in undistributed net income (loss) of subsidiary 147,565 174,561 69,515 Equity in undistributed net income of subsidiary 16,336 (14,402 ) 87,675 Income before income taxes 163,901 160,159 157,190 Income tax benefit (expense) 148 157 174 Net income $ 164,049 $ 160,316 $ 157,364 Condensed Statements of Cash Flows Twelve Months Ended September 30, 2016 2015 2014 (In thousands) Cash Flows From Operating Activities Net income $ 164,049 $ 160,316 $ 157,364 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiaries (12,677 ) 32,375 (87,943 ) Decrease (increase) in other assets (15 ) — 1 Increase in other liabilities 1,552 (13,189 ) 4,152 Net cash provided by (used in) operating activities 152,909 179,502 73,574 Cash Flows From Financing Activities Proceeds from exercise of common stock options and related tax benefit 9,283 2,070 10,252 Warrants purchased (7,744 ) — — Treasury stock purchased (87,850 ) (126,728 ) (104,291 ) Dividends paid on common stock (49,926 ) (51,111 ) (42,065 ) Net cash provided by (used in) financing activities (136,237 ) (175,769 ) (136,104 ) Increase (decrease) in cash 16,672 3,733 (62,530 ) Cash at beginning of year 7,628 3,895 66,425 Cash at end of year $ 24,300 $ 7,628 $ 3,895

Selected Quarterly Financial Da

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Sep. 30, 2016
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 presented. Twelve Months Ended September 30, 2016 First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) Interest income $ 135,124 $ 135,063 $ 133,735 $ 132,872 Interest expense 28,255 28,738 29,495 30,056 Net interest income 106,869 106,325 104,240 102,816 Provision (release) for loan losses — (1,500 ) (1,650 ) (3,100 ) Other operating income (including REO gain (loss), net) 12,055 14,623 15,573 14,830 Other operating expense 64,509 59,226 56,305 55,407 Income before income taxes 54,415 63,222 65,158 65,339 Income tax expense 19,317 21,499 22,154 21,115 Net income $ 35,098 $ 41,723 $ 43,004 $ 44,224 Basic earnings per share $ 0.38 $ 0.45 $ 0.47 $ 0.49 Diluted earnings per share 0.38 0.45 0.47 0.49 Cash dividends paid per share 0.13 0.14 0.14 0.14 Twelve Months Ended September 30, 2015 First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) Interest income $ 132,741 $ 132,630 $ 129,300 $ 135,339 Interest expense 30,558 28,750 28,735 28,486 Net interest income 102,183 103,880 100,565 106,853 Provision (release) 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 tax expense 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

Summary of Significant Accoun25

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Fiscal period	The Company's fiscal year end is September 30th. All references to 2016 , 2015 and 2014 represent balances as of September 30, 2016 , September 30, 2015 and September 30, 2014 , or activity for the fiscal years then ended.
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 South Valley Bank and Trust ("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. Covered loans are included within loans receivable on the statement of financial condition. Covered real estate owned are included within real estate owned on the statement of financial condition. FDIC indemnification asset. FDIC indemnification asset 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 loan fee income. Long term borrowing hedges. The Company has entered into 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 so gains and losses are recorded in Other Comprehensive Income to the extent the hedge is effective. Gains and losses on the interest rate swaps are reclassified from OCI to earnings in the period the hedged transaction affects earnings and are included in the same income statement line item that the hedged transaction is recorded. Commercial loan hedges. The Company has entered into interest rate swaps to hedge long term fixed rate commercial loans. These hedges qualify as fair value hedges under ASC 815 and provide for matching of the recognition of the gains and losses on the interest rate swap and the related hedged loan.
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. Real estate properties acquired through foreclosure of loans or through acquisitions are recorded initially at fair value less selling costs and are subsequent recorded at lower of cost or fair value. Any 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 during the fourth quarter. 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. 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. No stock options were granted in 2016 , 2015 or 2014 . Certain grants of restricted stock 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 awards are expected to vest.
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.
New accounting pronouncements	In August 2016, the FASB issued Accounting Standards Update ("ASU") 2016-15, Classification of Certain Cash Receipts and Cash Payments. The amendments in this ASU address eight specific cash flow issues with the objective of reducing diversity in practice. The specific issues identified include: debt prepayments or extinguishment costs; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. This ASU is effective for fiscal years beginning after December 15, 2017 including interim periods within that reporting period; however, early adoption is permitted. The Company is currently evaluating the guidance to determine its adoption method and does not expect this guidance to have a material impact on its consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses . The amendments in this ASU were issued to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments that are not accounted for at fair value through net income, including loans held for investment, held-to- maturity debt securities, trade and other receivables, net investments in leases and other commitments to extend credit held by a reporting entity at each reporting date. The amendments require that financial assets measured at amortized cost be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The ASU eliminates the current framework of recognizing probable incurred losses and instead requires an entity to use its current estimate of all expected credit losses over the contractual life. The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the financial assets. For purchased financial assets with a more-than-insignificant amount of credit deterioration since origination (“PCD assets”) that are measured at amortized cost, an allowance for expected credit losses is recorded as an adjustment to the cost basis of the asset. Subsequent changes in estimated cash flows would be recorded as an adjustment to the allowance and through the statement of income. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security's cost basis. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. For most debt securities, the transition approach requires a cumulative-effect adjustment to the statement of financial position as of the beginning of the first reporting period the guidance is effective. For other-than-temporarily impaired debt securities and PCD assets, the guidance will be applied prospectively. The Company is currently evaluating the provisions of this ASU to determine the impact the new standard will have on the Company's consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation-Stock Compensation- Improvements to Employee Share-Based Payment Accounting , which involves several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Under the guidance, income tax benefits and deficiencies are to be recognized as income tax expense or benefit in the income statement and the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. An entity should also recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period. Excess tax benefits should be classified along with other income tax cash flows as an operating activity. In regards to forfeitures, the entity may make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest or account for forfeitures when they occur. This ASU is effective for fiscal years beginning after December 15, 2016 including interim periods within that reporting period; however, early adoption is permitted. The Company is currently evaluating the guidance to determine its adoption method and does not expect this guidance to have a material impact on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases . The amendments require lessees to recognize a lease liability, which is a lessee's obligation to make lease payments arising from a lease, and a right-of-use asset, which is an asset that represents the lessee's right to use, or control the use of, a specified asset for the lease term. The guidance also simplifies the accounting for sale and leaseback transactions. The amendments are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted upon issuance. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is currently evaluating the provisions of this ASU to determine the impact the new standard will have on the Company's consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities , to require all equity investments to be measured at fair value with changes in the fair value recognized through net income (other than those accounted for under equity method of accounting or those that result in consolidation of the investee). The amendments in this ASU also require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. This ASU is effective for fiscal years beginning after December 15, 2017 including interim periods within that reporting period. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In September 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which will require that the acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amount is determined. The acquirer is required to also record, in the same period’s financial statements, the effect on earnings as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, an entity is required to present separately on the face of the income statement or disclose in the notes to the financial statements the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. The amendments in ASU 2015-16 are effective for years beginning after December 15, 2015. Early adoption is permitted for reporting periods for which financial statements have not been issued. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In April 2015, the FASB issued ASU 2015-05, Customer’s Accounting for Fees Paid in Cloud Computing Arrangement . The ASU was issued to clarify a customer's accounting for fees paid in a cloud computing arrangement. The amendments provide guidance to customers in determining whether a cloud computing arrangement includes a software license that should be accounted for as internal-use software. If the arrangement does not contain a software license, it would be accounted for as a service contract. The guidance in this ASU is effective for interim and annual periods beginning after December 15, 2015 and can be adopted either (1) prospectively to all arrangements entered into or materially modified after the effective date or (2) retrospectively. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) . The guidance in this update supersedes the revenue recognition requirements in ASC Topic 605, Revenue Recognition, and most industry-specific guidance throughout the industry topics of the codification. For public companies, this update was to be effective for interim and annual periods beginning after December 15, 2016. However, in August 2015, the FASB issued ASU 2015-14, which delayed the effective date of ASU 2014-09 by one year and permits companies to voluntarily adopt the new standard as of the original effective date. The Company does not expect this guidance to have a material impact on its consolidated financial statements.

Summary of Significant Accoun26

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Schedule of goodwill and intangible assets	The table below provides detail regarding the Company's intangible assets. Goodwill Core Deposit Intangible Total (In thousands) Balance at September 30, 2014 $ 291,503 $ 11,406 $ 302,909 Amortization — (3,551 ) (3,551 ) Balance at September 30, 2015 291,503 7,855 299,358 Amortization — (2,369 ) (2,369 ) Balance at September 30, 2016 $ 291,503 $ 5,486 $ 296,989
Schedule of future amortization expense	The table below presents the estimated core deposit intangible asset amortization expense for the next five years. Fiscal Year Expense (In thousands) 2017 $ 1,648 2018 1,204 2019 1,157 2020 1,157 2021 320

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Investments by contractual maturity date	The tables below provide detail regarding the amortized cost and fair value of available-for-sale and held-to-maturity investment securities. September 30, 2016 Amortized Cost Gross Unrealized Fair Value Yield Gains Losses (In thousands) Available-for-sale securities U.S. government and agency securities due Within 1 year $ 21,284 $ — $ (59 ) $ 21,225 0.81 % 1 to 5 years 12,477 1,027 (11 ) 13,493 7.94 5 to 10 years 48,134 — (1,589 ) 46,545 1.14 Over 10 years 182,051 27 (3,990 ) 178,088 1.33 Equity Securities Within 1 year — — — — — 1 to 5 years 100,422 1,402 — 101,824 1.90 Corporate debt securities due Within 1 year 278,094 325 (53 ) 278,366 1.33 1 to 5 years 63,481 928 (113 ) 64,296 2.47 5 to 10 years 69,955 — (2,417 ) 67,538 1.96 Over 10 years 50,000 938 — 50,938 3.00 Municipal bonds due 1 to 5 years 2,315 2 — 2,317 1.23 5 to 10 years 1,335 38 — 1,373 2.05 Over 10 years 20,363 3,617 — 23,980 6.45 Mortgage-backed securities Agency pass-through certificates 978,955 17,118 (3,032 ) 993,041 2.58 Commercial MBS 80,318 — (448 ) 79,870 1.91 1,909,184 25,422 (11,712 ) 1,922,894 2.22 Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 1,417,599 24,171 (214 ) 1,441,556 3.18 1,417,599 24,171 (214 ) 1,441,556 3.18 $ 3,326,783 $ 49,593 $ (11,926 ) $ 3,364,450 2.62 % 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 Corporate debt securities 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 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 %
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, 2016 and September 30, 2015 , by length of time that individual securities in each category have been in a continuous loss position. 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. September 30, 2016 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 debt securities $ — $ — $ (2,582 ) $ 100,467 $ (2,582 ) $ 100,467 U.S. agency securities (11 ) 3,167 (5,638 ) 220,613 (5,649 ) 223,780 Agency pass-through certificates (1,278 ) 301,030 (2,417 ) 232,407 (3,695 ) 533,437 $ (1,289 ) $ 304,197 $ (10,637 ) $ 553,487 $ (11,926 ) $ 857,684 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 debt securities $ (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

Loans Receivable (Tables)

Loans Receivable (Tables)	12 Months Ended
	Sep. 30, 2016
Receivables [Abstract]
Schedule of loans receivable (excluding covered loans)	The following table is a summary of loans receivable. September 30, 2016 September 30, 2015 (In thousands) (In thousands) Non-Acquired loans Single-family residential $ 5,621,066 51.3 % $ 5,651,845 57.5 % Construction 1,110,411 10.1 200,509 2.0 Construction - custom 473,069 4.3 396,307 4.0 Land - acquisition & development 116,156 1.1 94,208 1.0 Land - consumer lot loans 101,853 0.9 103,989 1.1 Multi-family 1,118,801 10.2 1,125,722 11.5 Commercial real estate 956,164 8.7 986,270 10.0 Commercial & industrial 946,648 8.6 612,836 6.2 HELOC 134,785 1.2 127,646 1.3 Consumer 137,450 1.3 194,655 2.0 Total non-acquired loans 10,716,403 97.9 % 9,493,987 96.6 % Acquired loans 115,394 1.1 166,293 1.7 Credit impaired acquired loans 89,837 0.8 87,081 0.9 Covered loans 28,974 0.3 75,909 0.8 Total gross loans 10,950,608 100 % 9,823,270 100 % Less: Allowance for probable losses 113,494 106,829 Loans in process 879,484 476,796 Discount on acquired loans 11,306 30,095 Deferred net origination fees 35,404 38,916 Total loan contra accounts 1,039,688 652,636 Net Loans $ 9,910,920 $ 9,170,634
Schedule of fixed and adjustable rate loans	The following summary breaks down the Company's fixed rate and adjustable rate loans by time to maturity or to rate adjustment. September 30, 2016 Fixed-Rate Adjustable-Rate Term To Maturity Gross Loans Term To Rate Adjustment Gross Loans (In thousands) (In thousands) Within 1 year $ 29,428 Less than 1 year $ 1,362,480 1 to 3 years 326,859 1 to 3 years 1,457,584 3 to 5 years 192,202 3 to 5 years 552,402 5 to 10 years 693,099 5 to 10 years 625,852 10 to 20 years 1,020,654 10 to 20 years — Over 20 years 4,690,048 Over 20 years — $ 6,952,290 $ 3,998,318
Schedule of loans receivable by geographic area	The following tables provide information regarding loans receivable by loan category and geography. September 30, 2016 Single - Multi- Land - Land - Construction - custom Construction Commercial Commercial Consumer HELOC Total (In thousands) Washington $ 2,926,555 $ 287,999 $ 74,017 $ 59,371 $ 277,877 $ 470,720 $ 482,802 $ 500,540 $ 41,212 $ 88,681 $ 5,209,774 Oregon 664,932 332,311 10,953 12,403 52,709 122,958 171,093 203,377 3,152 13,711 1,587,599 Arizona 546,080 292,830 4,142 9,014 45,536 43,300 38,302 47,584 309 15,838 1,042,935 Other 216,902 2,448 443 11,157 11,228 110,843 277,438 94,215 91,874 1,030 817,578 Utah 474,390 47,374 958 3,448 33,036 143,246 11,499 46,497 39 7,573 768,060 Idaho 284,212 33,043 4,761 3,910 17,120 64,510 34,075 16,627 141 6,973 465,372 New Mexico 186,061 97,699 12,417 1,274 18,128 47,763 68,385 10,860 1,110 13,790 457,487 Texas 202,541 29,458 10,806 979 10,610 107,071 6,151 42,594 1,085 305 411,600 Nevada 157,154 1,127 — 3,012 6,825 — 3,894 16,295 80 1,816 190,203 $ 5,658,827 $ 1,124,289 $ 118,497 $ 104,568 $ 473,069 $ 1,110,411 $ 1,093,639 $ 978,589 $ 139,002 $ 149,717 $ 10,950,608 Percentage by geographic area September 30, 2016 Single - Multi- Land - Land - Construction - custom Construction Commercial Commercial Consumer HELOC Total As % of total gross loans Washington 26.8 % 2.6 % 0.7 % 0.5 % 2.5 % 4.3 % 4.4 % 4.6 % 0.4 % 0.8 % 47.6 % Oregon 6.1 3.0 0.1 0.1 0.5 1.1 1.6 1.9 — 0.1 14.5 Arizona 5.0 2.7 — 0.1 0.4 0.4 0.3 0.4 — 0.2 9.5 Other 2.0 — — 0.2 0.1 1.0 2.5 0.9 0.8 — 7.5 Utah 4.3 0.5 — — 0.3 1.3 0.1 0.4 — 0.1 7.0 Idaho 2.5 0.3 — — 0.2 0.6 0.3 0.2 — 0.1 4.2 New Mexico 1.8 0.9 0.1 — 0.2 0.4 0.6 0.1 — 0.1 4.2 Texas 1.8 0.3 0.1 — 0.1 1.0 0.1 0.4 — — 3.8 Nevada 1.4 — 0.1 — 0.1 — — 0.1 — — 1.7 51.7 % 10.3 % 1.1 % 0.9 % 4.4 % 10.1 % 9.9 % 9.0 % 1.2 % 1.4 % 100 % Percentage by geographic area as a % of each loan type September 30, 2016 Single - Multi- Land - Land - Construction - custom Construction Commercial Commercial Consumer HELOC As % of total gross loans Washington 51.6 % 25.7 % 62.5 % 56.8 % 58.9 % 42.4 % 44.0 % 51.0 % 29.6 % 59.1 % Oregon 11.8 29.6 9.2 11.9 11.1 11.1 15.6 20.8 2.3 9.2 Arizona 9.7 26.0 3.5 8.6 9.6 3.9 3.5 4.9 0.2 10.6 Other 3.8 0.2 0.4 10.7 2.4 10.0 25.4 9.6 66.1 0.7 Utah 8.4 4.2 0.8 3.3 7.0 12.9 1.1 4.8 — 5.1 Idaho 5.0 2.9 4.0 3.7 3.6 5.8 3.1 1.7 0.1 4.7 New Mexico 3.3 8.7 10.5 1.2 3.8 4.3 6.3 1.1 0.8 9.2 Texas 3.6 2.6 9.1 0.9 2.2 9.6 0.6 4.4 0.8 0.2 Nevada 2.8 0.1 — 2.9 1.4 — 0.4 1.7 0.1 1.2 100.0 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 %
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, 2016 September 30, 2015 (In thousands) Recorded investment in impaired loans $ 285,243 $ 341,579 TDRs included in impaired loans 261,531 302,713 Allocated reserves on impaired loans 1,980 2,323 Specific reserves on impaired loans 366 275 Average balance of impaired loans for year ended 265,771 333,815 Interest income from impaired loans for year ended 11,314 14,855 Outstanding fixed-rate origination commitments 331,947 230,869 Gross loans serviced for others 80,896 72,083
Non accrual loans held by the company	The following table sets forth information regarding non-accrual loans. September 30, 2016 September 30, 2015 (In thousands) (In thousands) Non-accrual loans: Single-family residential $ 33,148 78.2 % $ 59,074 87.1 % Construction — — 754 1.1 Construction - custom — — 732 1.1 Land - acquisition & development 58 0.1 — — Land - consumer lot loans 510 1.2 1,273 1.9 Multi-family 776 1.8 2,558 3.8 Commercial real estate 7,100 16.7 2,176 3.2 Commercial & industrial 583 1.4 — — HELOC 239 0.6 563 0.8 Consumer — — 680 1.0 Total non-accrual loans $ 42,414 100 % $ 67,810 100 %
Aging of past due loans	The following table breaks down delinquent loans by loan category and delinquency bucket. September 30, 2016 Amount of Loans Days Delinquent Based on $ Amount of Loans % based on $ Type of Loan Net of Loans in Process Current 30 60 90 Total (In thousands) Non-acquired loans Single-family residential $ 5,624,783 $ 5,574,384 $ 20,917 $ 5,173 $ 24,309 $ 50,399 0.90 % Construction 497,393 497,393 — — — — — Construction - custom 229,957 229,419 538 — — 538 0.23 Land - acquisition & development 88,662 88,662 — — — — — Land - consumer lot loans 102,386 100,373 816 687 510 2,013 1.97 Multi-family 1,119,042 1,117,453 1,190 399 — 1,589 0.14 Commercial real estate 955,944 955,604 — 183 157 340 0.04 Commercial & industrial 947,703 947,661 — 42 — 42 — HELOC 134,214 133,683 490 — 41 531 0.40 Consumer 136,835 135,926 705 124 80 909 0.66 9,836,919 9,780,558 24,656 6,608 25,097 56,361 0.57 Acquired loans 115,394 114,770 124 2 498 624 0.54 Credit impaired acquired loans 89,837 84,625 227 142 4,843 5,212 5.80 Covered loans 28,974 22,891 — 262 5,821 6,083 20.99 Total Loans $ 10,071,124 $ 10,002,844 $ 25,007 $ 7,014 $ 36,259 $ 68,280 0.68 % Delinquency % 99.32% 0.25% 0.07% 0.36% 0.68%
Schedule of loan modifications	The following table provides information related to loans that were modified in a TDR during the periods presented. Twelve Months Ended September 30, 2016 Twelve Months Ended September 30, 2015 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 120 $ 23,541 $ 23,541 62 $ 13,378 $ 13,378 Construction — — — 2 701 701 Land - consumer lot loans 10 970 970 9 1,546 1,546 Commercial real estate 7 2,523 2,523 3 3,175 3,175 HELOC 1 126 126 1 50 50 Consumer 1 24 24 1 80 80 139 $ 27,184 $ 27,184 78 $ 18,930 $ 18,930 The following table provides information on payment defaults occurring during the periods presented where the loan had been modified in a TDR within 12 months of the payment default. Twelve Months Ended September 30, 2016 Twelve Months Ended September 30, 2015 Number of Recorded Number of Recorded TDRs That Subsequently Defaulted: Contracts Investment Contracts Investment (In thousands) (In thousands) Single-family residential 17 $ 4,875 18 $ 2,917 Construction 1 279 — — Land - consumer lot loans 5 606 2 301 Commercial real estate 2 326 — — 25 $ 6,086 20 $ 3,218
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, 2016 and 2015 . Twelve Months Ended September 30, 2016 Twelve Months Ended September 30, 2015 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 $ 72,705 $ 111,300 $ 7,204 $ 187,080 $ 97,125 $ 135,826 $ 14,513 $ 275,862 Net reclassification from non-accretable 4,867 — — — 6,307 — 346 — Accretion (18,730 ) 18,730 (2,982 ) 2,982 (30,727 ) 30,727 (7,655 ) 7,655 Transfers to REO — (175 ) — — — (2,975 ) — (150 ) Payments received, net — (38,094 ) — (58,930 ) — (52,278 ) — (96,287 ) Ending Balance $ 58,842 $ 91,761 $ 4,222 $ 131,132 $ 72,705 $ 111,300 $ 7,204 $ 187,080
Schedule of activity for FDIC indemnification asset	The following table shows the year to date activity for the FDIC indemnification asset. Twelve Months Ended September 30, 2016 Twelve Months Ended September 30, 2015 (In thousands) Balance at beginning of year $ 16,275 $ 36,860 Additions and impairment — (1,795 ) Payments received (1,730 ) (720 ) Amortization (2,012 ) (18,588 ) Accretion 236 518 Balance at end of year $ 12,769 $ 16,275

Allowance for Losses on Loans (

Allowance for Losses on Loans (Tables)	12 Months Ended
	Sep. 30, 2016
Receivables [Abstract]
Summary of activity in allowance for loan losses	The following tables summarize the activity in the allowance for loan losses. Twelve Months Ended September 30, 2016 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 47,347 $ (3,106 ) $ 3,251 $ (9,696 ) $ 37,796 Construction 6,680 — 745 12,413 19,838 Construction - custom 990 (60 ) 60 90 1,080 Land - acquisition & development 5,781 (42 ) 8,220 (7,936 ) 6,023 Land - consumer lot loans 2,946 (732 ) 5 316 2,535 Multi-family 5,304 — — 1,621 6,925 Commercial real estate 8,960 (103 ) 1,812 (2,081 ) 8,588 Commercial & industrial 24,980 (941 ) 2,933 1,036 28,008 HELOC 902 (54 ) 21 (56 ) 813 Consumer 2,939 (962 ) 2,018 (2,107 ) 1,888 $ 106,829 $ (6,000 ) $ 19,065 $ (6,400 ) $ 113,494 Twelve Months Ended 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 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
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. September 30, 2016 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 $ 37,536 $ 5,585,912 0.7 % $ 260 $ 19,629 1.3 % Construction 19,838 498,450 4.0 — — — Construction - custom 1,080 229,298 0.5 — 330 — Land - acquisition & development 6,022 90,850 6.6 2 850 0.2 Land - consumer lot loans 2,535 92,828 2.7 — 558 — Multi-family 6,911 1,091,974 0.6 13 1,505 0.9 Commercial real estate 8,497 957,380 0.9 91 11,157 0.8 Commercial & industrial 28,008 966,930 2.9 — — — HELOC 813 133,203 0.6 — 239 — Consumer 1,888 137,315 1.4 — 3 — $ 113,128 $ 9,784,140 1.2 % $ 366 $ 34,271 1.1 % ___________________ (1) Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans 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 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
Summary of loans based on credit quality indicators	The following tables provide information on loans based on credit quality indicators (defined above). September 30, 2016 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,570,634 $ — $ 50,432 $ — $ — $ 5,621,066 Construction 1,098,549 8,595 3,267 — — 1,110,411 Construction - custom 473,069 — — — — 473,069 Land - acquisition & development 110,125 — 6,031 — — 116,156 Land - consumer lot loans 100,862 — 991 — — 101,853 Multi-family 1,112,342 3,237 3,222 — — 1,118,801 Commercial real estate 928,032 13,446 14,686 — — 956,164 Commercial & industrial 900,571 7,160 38,917 — — 946,648 HELOC 134,298 — 487 — — 134,785 Consumer 137,367 — 83 — — 137,450 Total non-acquired loans 10,565,849 32,438 118,116 — — 10,716,403 Acquired loans 108,616 47 6,731 — — 115,394 Credit impaired acquired loans 60,985 — 28,852 — — 89,837 Covered loans 28,647 — 327 — — 28,974 Total gross loans $ 10,764,097 $ 32,485 $ 154,026 $ — $ — $ 10,950,608 Total grade as a % of total gross loans 98.3 % 0.3 % 1.4 % — % — % 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 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 % — % — %
Schedule of credit risk profile by payment activity	The following tables provide information on loans based on payment activity. September 30, 2016 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) (In thousands) Single-family residential $ 5,587,919 99.4 % $ 33,148 0.6 % Construction 1,110,411 100.0 — — Construction - custom 473,069 100.0 — — Land - acquisition & development 116,097 99.9 58 0.1 Land - consumer lot loans 101,343 99.5 510 0.5 Multi-family 1,118,025 99.9 776 0.1 Commercial real estate 949,064 99.3 7,100 0.7 Commercial & industrial 946,065 99.9 583 0.1 HELOC 134,546 99.8 239 0.2 Consumer 137,450 100.0 — — $ 10,673,989 99.6 % $ 42,414 0.4 % 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 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 %
Summary of impaired loans based on type	The following tables provide information on impaired loans by loan category. September 30, 2016 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) Impaired loans with no related allowance recorded: Single-family residential $ 9,627 $ 11,366 $ — $ 6,511 Construction — — — — Construction - custom — — — — Land - acquisition & development 138 9,001 — 614 Land - consumer lot loans 499 609 — 317 Multi-family 394 3,972 — 638 Commercial real estate 11,741 21,301 — 6,260 Commercial & industrial 1,030 3,082 — 863 HELOC 209 315 — 165 Consumer 74 550 — 111 23,712 50,196 — 15,479 Impaired loans with an allowance recorded: Single-family residential 228,186 232,595 3,809 216,632 Construction — — — — Construction - custom — — — — Land - acquisition & development 1,154 2,094 1 1,766 Land - consumer lot loans 9,630 10,678 1 9,548 Multi-family 1,505 1,505 13 1,522 Commercial real estate 19,434 22,848 91 19,311 Commercial & industrial — — — — HELOC 1,506 1,521 — 1,413 Consumer 116 306 — 100 261,531 271,547 3,915 (1) 250,292 Total: Single-family residential 237,813 243,961 3,809 223,143 Construction — — — — Construction - custom — — — — Land - acquisition & development 1,292 11,095 1 2,380 Land - consumer lot loans 10,129 11,287 1 9,865 Multi-family 1,899 5,477 13 2,160 Commercial real estate 31,175 44,149 91 25,571 Commercial & industrial 1,030 3,082 — 863 HELOC 1,715 1,836 — 1,578 Consumer 190 856 — 211 $ 285,243 $ 321,743 $ 3,915 (1) $ 265,771 ____________________ (1) Includes $366,000 of specific reserves and $3,549,000 included in the general reserves. September 30, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) Impaired loans with no related allowance recorded: Single-family residential $ 17,250 $ 19,644 $ — $ 14,069 Construction 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 Impaired loans with an allowance recorded: Single-family residential 259,461 263,268 6,678 260,028 Construction 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 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.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair value of assets measured on recurring basis	The following table presents the balance and ASC 825 level of assets measured at fair value on a recurring basis. September 30, 2016 Level 1 Level 2 Level 3 Total (In thousands) Available-for-sale securities Equity securities $ 101,824 $ — $ — $ 101,824 U.S. government and agency securities — 259,351 — 259,351 Municipal bonds — 27,670 — 27,670 Corporate debt securities — 461,138 — 461,138 Mortgage-backed securities Agency pass-through certificates — 993,041 — 993,041 Commercial MBS — 79,870 — 79,870 Other debt securities — — — — Total Available-for-sale securities 101,824 1,821,070 — 1,922,894 Interest rate contracts — 20,895 — 20,895 Total Financial Assets $ 101,824 $ 1,841,965 $ — $ 1,943,789 Financial Liabilities Interest rate contracts $ — $ 20,895 $ — $ 20,895 Commercial loan hedges — 3,312 — 3,312 Long term borrowing hedges — 31,347 — 31,347 Total Financial Liabilities $ — $ 55,554 $ — $ 55,554 There were no transfers between, into and/or out of Levels 1, 2 or 3 during the year ended September 30, 2016 . September 30, 2015 Level 1 Level 2 Level 3 Total (In thousands) Available-for-sale securities Equity securities $ 101,952 $ — $ — $ 101,952 U.S. government and agency securities — 482,464 — 482,464 Municipal bonds — 27,123 — 27,123 Corporate debt securities — 505,800 — 505,800 Mortgage-backed securities Agency pass-through certificates — Commercial MBS — 1,160,518 — 1,160,518 Other debt securities — 102,706 — 102,706 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 hedges — 966 — 966 Long term borrowing hedges — 14,555 — 14,555 Total Financial Liabilities $ — $ 27,400 $ — $ 27,400 There were no transfers between, into and/or out of Level 1, 2 or 3 during the year ended September 30, 2015 .
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 recorded balance of assets that were measured at estimated fair value on a nonrecurring basis for the periods presented, and the total gains (losses) resulting from those fair value adjustments for the periods presented. These estimated fair values are shown gross of estimated selling costs: September 30, 2016 Three Months Ended September 30, 2016 Twelve Months Ended September 30, 2016 Level 1 Level 2 Level 3 Total Total Gains (Losses) (In thousands) Impaired loans (1) $ — $ — $ 17,476 $ 17,476 $ (474 ) $ (4,236 ) Real estate owned (2) — — 25,190 25,190 (1,003 ) (3,947 ) Balance at end of period $ — $ — $ 42,666 $ 42,666 $ (1,477 ) $ (8,183 ) ___________________ (1) The gains (losses) represent remeasurements of collateral-dependent impaired loans. (2) The gains (losses) represent aggregate writedowns and charge-offs on real estate owned. September 30, 2015 Three Months Ended September 30, 2015 Twelve Months 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 ) Real estate owned (2) — — 81,448 81,448 (654 ) 7,749 Balance at end of period $ — $ — $ 88,183 $ 88,183 $ (694 ) $ 3,508 ___________________ (1) The gains (losses) represent remeasurements of collateral-dependent impaired loans. (2) The gains (losses) represent aggregate writedowns and charge-offs on real estate owned.
Fair value of financial instruments by balance sheet grouping	Although management is not aware of any factors that would materially affect the estimated fair value amounts presented below, such amounts have not been comprehensively revalued for purposes of these financial statements since the dates shown, and therefore, estimates of fair value subsequent to those dates may differ significantly from the amounts presented below. September 30, 2016 September 30, 2015 Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (In thousands) Financial assets Cash and cash equivalents 1 $ 450,368 $ 450,368 $ 284,049 $ 284,049 Available-for-sale securities: Equity securities 1 101,824 101,824 101,952 101,952 U.S. government and agency securities 2 259,351 259,351 482,464 482,464 Municipal bonds 2 27,670 27,670 27,123 27,123 Corporate debt securities 2 461,138 461,138 505,800 505,800 Mortgage-backed securities Agency pass-through certificates 2 993,041 993,041 1,160,518 1,160,518 Commercial MBS 2 79,870 79,870 102,706 102,706 Total available-for-sale securities 1,922,894 1,922,894 2,380,563 2,380,563 Held-to-maturity securities: Mortgage-backed securities Agency pass-through certificates 2 1,417,599 1,441,556 1,643,216 1,637,420 Total held-to-maturity securities 1,417,599 1,441,556 1,643,216 1,637,420 Loans receivable 3 9,910,920 10,414,794 9,170,634 9,667,750 FDIC indemnification asset 3 12,769 12,095 16,275 15,522 FHLB and FRB stock 2 117,205 117,205 107,198 107,198 Other assets - interest rate contracts 2 20,895 20,895 11,879 11,879 Financial liabilities Customer accounts 2 10,600,852 10,184,321 10,631,703 10,004,290 FHLB advances and other borrowings 2 2,080,000 2,184,671 1,830,000 1,938,384 Other liabilities - interest rate contracts 2 20,895 20,895 11,879 11,879 Other liabilities - commercial loan hedges 2 3,312 3,312 966 966 Other liabilities - long term borrowing hedges 2 31,347 31,347 14,555 14,555 The following table presents the fair value and balance sheet classification of derivatives outstanding. Asset Derivatives Liability Derivatives September 30, 2016 September 30, 2015 September 30, 2016 September 30, 2015 (In thousands) Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Interest rate contracts Other assets $ 20,895 Other assets $ 11,879 Other liabilities $ 20,895 Other liabilities $ 11,879 Commercial loan hedges Other assets — Other assets — Other liabilities 3,312 Other liabilities 966 Long term borrowing hedges Other assets — Other assets — Other liabilities 31,347 Other liabilities 14,555 $ 20,895 $ 11,879 $ 55,554 $ 27,400

Derivative and Hedging Activiti

Derivative and Hedging Activities (Tables)	12 Months Ended
	Sep. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair value of financial instruments by balance sheet grouping	Although management is not aware of any factors that would materially affect the estimated fair value amounts presented below, such amounts have not been comprehensively revalued for purposes of these financial statements since the dates shown, and therefore, estimates of fair value subsequent to those dates may differ significantly from the amounts presented below. September 30, 2016 September 30, 2015 Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (In thousands) Financial assets Cash and cash equivalents 1 $ 450,368 $ 450,368 $ 284,049 $ 284,049 Available-for-sale securities: Equity securities 1 101,824 101,824 101,952 101,952 U.S. government and agency securities 2 259,351 259,351 482,464 482,464 Municipal bonds 2 27,670 27,670 27,123 27,123 Corporate debt securities 2 461,138 461,138 505,800 505,800 Mortgage-backed securities Agency pass-through certificates 2 993,041 993,041 1,160,518 1,160,518 Commercial MBS 2 79,870 79,870 102,706 102,706 Total available-for-sale securities 1,922,894 1,922,894 2,380,563 2,380,563 Held-to-maturity securities: Mortgage-backed securities Agency pass-through certificates 2 1,417,599 1,441,556 1,643,216 1,637,420 Total held-to-maturity securities 1,417,599 1,441,556 1,643,216 1,637,420 Loans receivable 3 9,910,920 10,414,794 9,170,634 9,667,750 FDIC indemnification asset 3 12,769 12,095 16,275 15,522 FHLB and FRB stock 2 117,205 117,205 107,198 107,198 Other assets - interest rate contracts 2 20,895 20,895 11,879 11,879 Financial liabilities Customer accounts 2 10,600,852 10,184,321 10,631,703 10,004,290 FHLB advances and other borrowings 2 2,080,000 2,184,671 1,830,000 1,938,384 Other liabilities - interest rate contracts 2 20,895 20,895 11,879 11,879 Other liabilities - commercial loan hedges 2 3,312 3,312 966 966 Other liabilities - long term borrowing hedges 2 31,347 31,347 14,555 14,555 The following table presents the fair value and balance sheet classification of derivatives outstanding. Asset Derivatives Liability Derivatives September 30, 2016 September 30, 2015 September 30, 2016 September 30, 2015 (In thousands) Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Interest rate contracts Other assets $ 20,895 Other assets $ 11,879 Other liabilities $ 20,895 Other liabilities $ 11,879 Commercial loan hedges Other assets — Other assets — Other liabilities 3,312 Other liabilities 966 Long term borrowing hedges Other assets — Other assets — Other liabilities 31,347 Other liabilities 14,555 $ 20,895 $ 11,879 $ 55,554 $ 27,400

Interest Receivable (Tables)

Interest Receivable (Tables)	12 Months Ended
	Sep. 30, 2016
Receivables [Abstract]
Schedule of interest receivable	The following table provides a summary of interest receivable by interest earning asset type. September 30, 2016 September 30, 2015 (In thousands) Loans receivable $ 29,858 $ 30,930 Mortgage-backed securities 5,670 6,695 Investment securities 2,141 2,804 $ 37,669 $ 40,429

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Sep. 30, 2016
Property, Plant and Equipment [Abstract]
Premises and Equipment	The following table provides a summary of premises and equipment by asset type. September 30, 2016 September 30, 2015 Estimated Useful Life (In thousands) Land — $ 109,414 $ 113,347 Buildings 25 - 40 143,841 147,757 Leasehold improvements 7 - 15 18,365 10,193 Furniture, software and equipment 2 - 10 115,199 89,919 386,819 361,216 Less accumulated depreciation and amortization (104,868 ) (84,969 ) $ 281,951 $ 276,247

Customer Accounts (Tables)

Customer Accounts (Tables)	12 Months Ended
	Sep. 30, 2016
Banking and Thrift [Abstract]
Schedule of deposits	The following table provides the composition of the Company's customer accounts, including interest rate buckets and maturity buckets for time deposits. September 30, 2016 September 30, 2015 (In thousands) Checking accounts, .15% and under $ 2,721,721 $ 2,555,766 Passbook and statement accounts, .10% and under 820,980 700,794 Insured money market accounts, .01% to .15% 2,462,891 2,564,318 Time deposit accounts Less than 1.00% 3,268,272 3,126,119 1.00% to 1.99% 1,292,612 1,177,356 2.00% to 2.99% 34,376 501,409 3.00% to 3.99% — 5,156 4.00% and higher — 785 Total time deposits 4,595,260 4,810,825 $ 10,600,852 $ 10,631,703 Time deposit maturities are as follows: September 30, 2016 September 30, 2015 (In thousands) Within 1 year $ 2,894,900 $ 2,862,313 1 to 2 years 798,309 1,068,792 2 to 3 years 293,058 321,118 Over 3 years 608,993 558,602 $ 4,595,260 $ 4,810,825
Schedule of interest expense on customer deposits	Interest expense on customer accounts consisted of the following: Year ended September 30, 2016 2015 2014 (In thousands) Checking accounts $ 1,491 $ 1,036 $ 1,259 Passbook and statement accounts 734 660 607 Insured money market accounts 3,285 3,631 4,574 Time deposit accounts 47,425 46,273 52,636 52,935 51,600 59,076 Less early withdrawal penalties (450 ) (546 ) (552 ) $ 52,485 $ 51,054 $ 58,524 Weighted average interest rate at end of year 0.50 % 0.48 % 0.51 % Weighted daily average interest rate during the year 0.50 % 0.48 % 0.57 %

FHLB Advances and Other Borro35

FHLB Advances and Other Borrowings (Tables)	12 Months Ended
	Sep. 30, 2016
Banking and Thrift [Abstract]
Advances	The table below shows the maturity dates of outstanding FHLB advances. September 30, 2016 September 30, 2015 (In thousands) FHLB advances Within 1 year $ 200,000 $ 250,000 1 to 3 years 880,000 750,000 4 to 5 years 700,000 430,000 More than 5 years 300,000 400,000 $ 2,080,000 $ 1,830,000
Weighted average cost and amount of advances	Financial data pertaining to the weighted-average cost and the amount of FHLB advances were as follows. 2016 2015 2014 (In thousands) Weighted average interest rate at end of year 3.15 % 3.35 % 3.52 % Weighted daily average interest rate during the year 3.22 % 3.57 % 3.56 % Daily average of FHLB advances during the year $ 1,992,434 $ 1,848,904 $ 1,955,205 Maximum amount of FHLB advances at any month end $ 2,080,000 $ 1,930,000 $ 2,205,000 Interest expense during the year (excludes interest rate swap expense) $ 64,058 $ 64,331 $ 68,307

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Summary of major sources of temporary differences and deferred tax effects	The table below provides a summary of the Company's tax assets and liabilities, including deferred tax assets and deferred tax liabilities by major source. Deferred tax balances represent temporary differences between the tax basis and the financial statement carrying amounts of assets and liabilities. September 30, 2016 September 30, 2015 (In thousands) Deferred tax assets Loan loss reserves $ 45,531 $ 43,749 REO reserves 4,018 11,213 Valuation adjustment on available-for-sale securities and cash flow hedges 6,482 — Asset purchase tax basis difference (net) — 5,973 Delinquent accrued interest 2,812 3,069 FDIC loss share guarantee receivable 9,598 7,803 Other, net 3,210 3,891 Total deferred tax assets 71,651 75,698 Deferred tax liabilities Federal Home Loan Bank stock dividends 24,135 24,135 Valuation adjustment on available-for-sale securities and cash flow hedges — 205 Asset purchase tax basis difference (net) 2,830 Loan origination costs 14,826 13,875 Depreciation 34,936 25,934 Total deferred tax liabilities 76,727 64,149 Net deferred tax asset (liability) (5,076 ) 11,549 Current tax asset 21,123 2,964 Net tax asset $ 16,047 $ 14,513
Schedule of effective income tax rate reconciliation	The table below presents a reconciliation of the statutory federal income tax rate to the Company's effective income tax rate. Year ended September 30, 2016 2015 2014 Statutory income tax rate 35 % 35 % 35 % State income tax 1 2 2 Other differences (2 ) (1 ) (1 ) Effective income tax rate 34 % 36 % 36 %
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	The following table summarizes the Company's income tax expense (benefit) for the respective periods. Year ended September 30, 2016 2015 2014 (In thousands) Federal: Current $ 57,173 $ 79,841 $ 70,797 Deferred 21,961 3,244 10,591 79,134 83,085 81,388 State: Current $ 3,600 $ 6,636 $ 4,987 Deferred 1,351 (518 ) 1,189 4,951 6,118 6,176 Total Current 60,773 86,477 75,784 Deferred 23,312 2,726 11,780 $ 84,085 $ 89,203 $ 87,564

Stock Award Plans (Tables)

Stock Award Plans (Tables)	12 Months Ended
	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of option activity	A summary of stock option activity and changes during the year are as follows. Options Shares Weighted Weighted Aggregate Outstanding at September 30, 2015 1,027,374 $ 21.64 3 $1,867 Granted — — Exercised (438,456 ) 21.51 Forfeited (129,475 ) 22.32 Outstanding at September 30, 2016 459,443 $ 21.47 2 $ 2,392 Exercisable at September 30, 2016 459,443 $ 21.47 2 $ 2,392
Schedule of miscellaneous information related to stock options	The table below presents other information regarding stock options. Year ended September 30, 2016 2015 2014 (In thousands, except fair value of options granted) Compensation cost for stock options $ 89 $ 232 $ 324 Weighted average grant date fair value per stock option 2.73 2.96 2.95 Total intrinsic value of options exercised 1,651 831 1,136 Grant date FV of options exercised 1,422 368 1,962 Cash received from option exercises 9,283 2,069 10,142 Tax benefit realized for option exercises — — 159
Summary of nonvested activity	The following is a summary of activity related to non-vested stock options. Year ended September 30, 2016 2015 2014 Non-vested Stock Options Options Outstanding Weighted Options Outstanding Weighted Options Outstanding Weighted Outstanding at beginning of period 69,287 $ 3.85 145,795 $ 3.87 287,750 $ 3.44 Granted — — — — — — Vested (62,227 ) 3.91 (61,018 ) 3.88 (119,520 ) 2.88 Forfeited (7,060 ) 3.89 (15,490 ) 3.90 (22,435 ) 3.63 Outstanding at end of period — $ — 69,287 $ 3.85 145,795 $ 3.87
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 stock activity. Year ended September 30, 2016 2015 2014 Non-vested Restricted Stock Outstanding Weighted Outstanding Weighted Outstanding Weighted Outstanding at beginning of period 521,302 $ 15.03 515,845 $ 14.10 480,904 $ 11.52 Granted 229,450 17.20 301,750 $ 14.26 300,500 15.43 Vested (165,965 ) 15.96 (223,043 ) 13.24 (202,014 ) 11.68 Forfeited (94,424 ) 13.64 (73,250 ) 10.72 (63,545 ) 8.50 Outstanding at end of period 490,363 $ 16.00 521,302 $ 15.03 515,845 $ 14.10

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Sep. 30, 2016
Equity [Abstract]
Schedule of compliance with regulatory capital requirements	Actual Capital Adequacy Categorized as Well Capitalized Under Prompt Corrective Action Provisions Capital Ratio Ratio Ratio September 30, 2016 (In thousands) Common Equity Tier 1 risk-based capital ratio: The Company $ 1,690,380 17.54 % 4.50 % NA The Bank 1,668,828 17.32 4.50 6.50 % Tier 1 risk-based capital ratio: The Company 1,690,380 17.54 6.00 NA The Bank 1,668,828 17.32 6.00 8.00 Total risk-based capital ratio: The Company 1,807,740 18.76 8.00 NA The Bank 1,786,188 18.54 8.00 10.00 Tier 1 leverage ratio: The Company 1,690,380 11.60 4.00 NA The Bank 1,668,828 11.45 4.00 5.00 September 30, 2015 Common Equity Tier 1 risk-based capital ratio: The Company $ 1,658,985 18.81 % 4.50 % NA The Bank 1,652,569 18.73 4.50 6.50 % Tier 1 risk-based capital ratio: The Company 1,658,985 18.81 6.00 NA The Bank 1,652,569 18.73 6.00 8.00 Total risk-based capital ratio: The Company 1,769,587 20.07 8.00 NA The Bank 1,763,171 19.98 8.00 10.00 Tier 1 leverage ratio: The Company 1,658,985 11.71 4.00 N/A The Bank 1,652,569 11.66 4.00 5.00
Schedule of weighted average number of shares	The following table sets forth information regarding earnings per share calculations. Year ended September 30, 2016 2015 2014 Weighted average shares outstanding 91,399,038 95,644,639 101,154,030 Weighted average dilutive warrants 440,366 340,016 352,171 Weighted average dilutive options 73,514 69,304 84,150 Weighted average diluted shares 91,912,918 96,053,959 101,590,351 Net income (In thousands) $ 164,049 $ 160,316 $ 157,364 Basic EPS $ 1.79 $ 1.68 $ 1.56 Diluted EPS 1.78 1.67 1.55

Financial Information - Washi39

Financial Information - Washington Federal, INC. (Tables)	12 Months Ended
	Sep. 30, 2016
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, 2016 September 30, 2015 (In thousands) Assets Cash $ 24,300 $ 7,628 Other assets 15 — Investment in subsidiary 1,954,179 1,949,262 Total assets $ 1,978,494 $ 1,956,890 Liabilities Other liabilities $ 2,763 $ 1,211 Total liabilities 2,763 1,211 Stockholders’ equity Total stockholders’ equity 1,975,731 1,955,679 Total liabilities and stockholders’ equity $ 1,978,494 $ 1,956,890 Condensed Statements of Operations Twelve Months Ended September 30, 2016 2015 2014 (In thousands) Income Dividends from subsidiary $ 148,000 $ 175,000 $ 70,000 Total Income 148,000 175,000 70,000 Expense Miscellaneous 435 439 485 Total expense 435 439 485 Net income (loss) before equity in undistributed net income (loss) of subsidiary 147,565 174,561 69,515 Equity in undistributed net income of subsidiary 16,336 (14,402 ) 87,675 Income before income taxes 163,901 160,159 157,190 Income tax benefit (expense) 148 157 174 Net income $ 164,049 $ 160,316 $ 157,364 Condensed Statements of Cash Flows Twelve Months Ended September 30, 2016 2015 2014 (In thousands) Cash Flows From Operating Activities Net income $ 164,049 $ 160,316 $ 157,364 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiaries (12,677 ) 32,375 (87,943 ) Decrease (increase) in other assets (15 ) — 1 Increase in other liabilities 1,552 (13,189 ) 4,152 Net cash provided by (used in) operating activities 152,909 179,502 73,574 Cash Flows From Financing Activities Proceeds from exercise of common stock options and related tax benefit 9,283 2,070 10,252 Warrants purchased (7,744 ) — — Treasury stock purchased (87,850 ) (126,728 ) (104,291 ) Dividends paid on common stock (49,926 ) (51,111 ) (42,065 ) Net cash provided by (used in) financing activities (136,237 ) (175,769 ) (136,104 ) Increase (decrease) in cash 16,672 3,733 (62,530 ) Cash at beginning of year 7,628 3,895 66,425 Cash at end of year $ 24,300 $ 7,628 $ 3,895

Selected Quarterly Financial 40

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Sep. 30, 2016
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 presented. Twelve Months Ended September 30, 2016 First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) Interest income $ 135,124 $ 135,063 $ 133,735 $ 132,872 Interest expense 28,255 28,738 29,495 30,056 Net interest income 106,869 106,325 104,240 102,816 Provision (release) for loan losses — (1,500 ) (1,650 ) (3,100 ) Other operating income (including REO gain (loss), net) 12,055 14,623 15,573 14,830 Other operating expense 64,509 59,226 56,305 55,407 Income before income taxes 54,415 63,222 65,158 65,339 Income tax expense 19,317 21,499 22,154 21,115 Net income $ 35,098 $ 41,723 $ 43,004 $ 44,224 Basic earnings per share $ 0.38 $ 0.45 $ 0.47 $ 0.49 Diluted earnings per share 0.38 0.45 0.47 0.49 Cash dividends paid per share 0.13 0.14 0.14 0.14 Twelve Months Ended September 30, 2015 First Quarter Second Quarter Third Quarter Fourth Quarter (In thousands, except per share data) Interest income $ 132,741 $ 132,630 $ 129,300 $ 135,339 Interest expense 30,558 28,750 28,735 28,486 Net interest income 102,183 103,880 100,565 106,853 Provision (release) 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 tax expense 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

Summary of Significant Accoun41

Summary of Significant Accounting Policies - Other Narrative (Details)	Nov. 18, 2016USD ($)	Sep. 30, 2016USD ($)paymentofficesegmentpartshares	Sep. 30, 2015USD ($)shares	Sep. 30, 2014USD ($)shares
Summary of Significant Accounting Policies [Line Items]
Award vesting period (in years)		5 years
Options granted (in shares) | shares		0	0	0
Number of offices (in offices) | office		238
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
Number of parts in loss percentage factor | part		2
Number of payments required | payment		6
Number of reportable business segments | segment		1
Payments of dividends		$ 49,926,000	$ 51,111,000	$ 42,065,000
Subsequent Event
Summary of Significant Accounting Policies [Line Items]
Payments of dividends	$ 12,421,733
Minimum
Summary of Significant Accounting Policies [Line Items]
Term for payment and rate reduction		6 months
Maximum
Summary of Significant Accounting Policies [Line Items]
Options exercisable, weighted average remaining contractual term (in years)		10 years
Term for payment and rate reduction		12 months
Stock Options and Restricted Stock [Member] | Minimum
Summary of Significant Accounting Policies [Line Items]
Award vesting period (in years)		3 years
Stock Options and Restricted Stock [Member] | Maximum
Summary of Significant Accounting Policies [Line Items]
Award vesting period (in years)		10 years

Summary of Significant Accoun42

Summary of Significant Accounting Policies - Business Combinations (Details) $ in Thousands	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)branch	Sep. 30, 2014USD ($)	May 03, 2014branch	May 02, 2014branch	Dec. 07, 2013branch	Dec. 06, 2013branch	Nov. 01, 2013branch	Oct. 31, 2013branch	Nov. 01, 2012USD ($)
Business Acquisition [Line Items]
Intangible assets, goodwill	$ 291,503	$ 291,503	$ 291,503
Bank of America, National Association
Business Acquisition [Line Items]
Number of branches acquired (in branches) | branch		74
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										$ 1,900,000

Summary of Significant Accoun43

Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Goodwill and Intangible Assets [Roll Forward]
Goodwill, beginning of period	$ 291,503	$ 291,503
Goodwill, end of period	291,503	291,503
Intangible assets. amortization	(2,369)	(3,551)
Goodwill and intangible assets, beginning of period	299,358	302,909
Goodwill and intangible assets, end of period	296,989	299,358
Core Deposit [Member]
Goodwill and Intangible Assets [Roll Forward]
Intangible assets, beginning of period	7,855	11,406
Intangible assets. amortization	(2,369)	(3,551)
Intangible assets, end of period	5,486	$ 7,855
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,017	1,648
2,018	1,204
2,019	1,157
2,020	1,157
2,021	$ 320

Investment Securities - Investm

Investment Securities - Investments by Contractual Maturity Date (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Amortized Cost, Available-for-sale securities
Amortized Cost	$ 1,909,184,000	$ 2,365,450,000
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains	25,422,000	28,158,000
Gross unrealized loss	(11,712,000)	(13,045,000)
Fair Value, Available-for-sale securities
Available-for-sale securities, at fair value	$ 1,922,894,000	$ 2,380,563,000
Yield, Available-for-sale securities
Yield	2.22%	1.97%
Amortized Cost, Held-to-maturity securities
Amortized Cost	$ 1,417,599,000	$ 1,643,216,000
Gross Unrealized Gains / Losses, Held-to-maturity securities
Gross unrealized gains	24,171,000	10,516,000
Gross unrealized losses	(214,000)	(16,312,000)
Fair Value, Held-to-maturity securities
Fair Value	1,441,556,000	1,637,420,000
Yield, Held-to-maturity securities
Investments	3,326,783,000	4,008,666,000
Gross unrealized gains on investments	49,593,000	38,674,000
Gross unrealized losses on investments	(11,926,000)	(29,357,000)
Fair value of investments	$ 3,364,450,000	$ 4,017,983,000
Yield on investments	2.62%	2.46%
Available-for-sale securities purchased	$ (137,591,000)	$ (315,114,000)	$ (1,280,477,000)
Payments to acquire held-to-maturity securities	0	259,489,000	0
Proceeds from sales of available-for-sale investment securities	50,741,000	246,826,000	$ 0
Proceeds from sale of held-to-maturity securities	$ 0
Term of contractual due dates (in years)	25 years
U.S. government and agency securities
Amortized Cost, Available-for-sale securities
Within 1 year	$ 21,284,000
1 to 5 years	12,477,000	105,065,000
5 to 10 years	48,134,000	119,071,000
Over 10 years	182,051,000	262,832,000
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, within 1 year	0
Gross unrealized gains, 1 to 5 years	1,027,000	1,923,000
Gross unrealized gains, 5 to 10 years	0	35,000
Gross unrealized gains, over 10 years	27,000	0
Gross unrealized losses, within 1 year	(59,000)
Gross unrealized losses, 1 to 5 years	(11,000)	(274,000)
Gross unrealized losses, 5 to 10 years	(1,589,000)	(1,247,000)
Gross unrealized losses, over 10 years	(3,990,000)	(4,941,000)
Fair Value, Available-for-sale securities
Within 1 year	21,225,000
1 to 5 years	13,493,000	106,714,000
5 to 10 years	46,545,000	117,859,000
Over 10 years	$ 178,088,000	$ 257,891,000
Yield, Available-for-sale securities
Within 1 year	0.81%
1 to 5 years	7.94%	1.74%
5 to 10 years	1.14%	1.54%
Over 10 years	1.33%	1.23%
Equity Securities
Amortized Cost, Available-for-sale securities
Within 1 year	$ 0	$ 500,000
1 to 5 years	100,422,000	99,922,000
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, within 1 year	0	17,000
Gross unrealized gains, 1 to 5 years	1,402,000	1,513,000
Gross unrealized losses, within 1 year	0	0
Gross unrealized losses, 1 to 5 years	0	0
Fair Value, Available-for-sale securities
Within 1 year	0	517,000
1 to 5 years	$ 101,824,000	$ 101,435,000
Yield, Available-for-sale securities
Within 1 year	0.00%	1.80%
1 to 5 years	1.90%	1.90%
Corporate debt securities
Amortized Cost, Available-for-sale securities
Within 1 year	$ 278,094,000	$ 24,787,000
1 to 5 years	63,481,000	311,435,000
5 to 10 years	69,955,000	100,000,000
Over 10 years	50,000,000	69,950,000
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, within 1 year	325,000	191,000
Gross unrealized gains, 1 to 5 years	928,000	1,190,000
Gross unrealized gains, 5 to 10 years	0	876,000
Gross unrealized gains, over 10 years	938,000	953,000
Gross unrealized losses, within 1 year	(53,000)	0
Gross unrealized losses, 1 to 5 years	(113,000)	(58,000)
Gross unrealized losses, 5 to 10 years	(2,417,000)	(3,524,000)
Gross unrealized losses, over 10 years	0	0
Fair Value, Available-for-sale securities
Within 1 year	278,366,000	24,978,000
1 to 5 years	64,296,000	312,567,000
5 to 10 years	67,538,000	97,352,000
Over 10 years	$ 50,938,000	$ 70,903,000
Yield, Available-for-sale securities
Within 1 year	1.33%	0.53%
1 to 5 years	2.47%	0.88%
5 to 10 years	1.96%	1.47%
Over 10 years	3.00%	3.00%
Municipal bonds
Amortized Cost, Available-for-sale securities
1 to 5 years	$ 2,315,000	$ 2,285,000
5 to 10 years	1,335,000	1,303,000
Over 10 years	20,363,000	20,382,000
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, 1 to 5 years	2,000	8,000
Gross unrealized gains, 5 to 10 years	38,000	7,000
Gross unrealized gains, over 10 years	3,617,000	3,138,000
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	2,317,000	2,293,000
5 to 10 years	1,373,000	1,310,000
Over 10 years	$ 23,980,000	$ 23,520,000
Yield, Available-for-sale securities
1 to 5 years	1.23%	1.23%
5 to 10 years	2.05%	2.05%
Over 10 years	6.45%	6.45%
Agency pass through mortgage-backed securities
Amortized Cost, Available-for-sale securities
Without single maturity date	$ 978,955,000	$ 1,144,787,000
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, without single maturity date	17,118,000	18,222,000
Gross unrealized losses, without single maturity date	(3,032,000)	(2,491,000)
Fair Value, Available-for-sale securities
Without single maturity date	$ 993,041,000	$ 1,160,518,000
Yield, Available-for-sale securities
Without single maturity date	2.58%	2.48%
Amortized Cost, Held-to-maturity securities
Without single maturity date	$ 1,417,599,000	$ 1,643,216,000
Gross Unrealized Gains / Losses, Held-to-maturity securities
Gross unrealized gains, without single maturity date	24,171,000	10,516,000
Gross unrealized losses, without single maturity date	(214,000)	(16,312,000)
Fair Value, Held-to-maturity securities
Without single maturity date	$ 1,441,556,000	$ 1,637,420,000
Yield, Held-to-maturity securities
Without a single maturity date	3.18%	3.19%
Commercial MBS
Amortized Cost, Available-for-sale securities
Without single maturity date	$ 80,318,000	$ 103,131,000
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, without single maturity date	0	85,000
Gross unrealized losses, without single maturity date	(448,000)	(510,000)
Fair Value, Available-for-sale securities
Without single maturity date	$ 79,870,000	$ 102,706,000
Yield, Available-for-sale securities
Without single maturity date	1.91%	1.51%

Investment Securities - Securit

Investment Securities - Securities in Continuous Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Schedule of Available-for-sale Securities [Line Items]
Unrealized gross losses of AFS securities, continuous unrealized loss position, less than 12 months	$ (1,289)	$ (6,229)
Fair value of AFS securities, continuous unrealized loss position, less than 12 months	304,197	578,646
Unrealized gross losses of AFS securities, continuous unrealized loss position, 12 months or longer	(10,637)	(23,128)
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	553,487	1,297,408
Unrealized gross losses of AFS securities, continuous unrealized loss position	(11,926)	(29,357)
Fair value of AFS securities, continuous unrealized loss position	857,684	1,876,054
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	0	(183)
Fair value of AFS securities, continuous unrealized loss position, less than 12 months	0	72,862
Unrealized gross losses of AFS securities, continuous unrealized loss position, 12 months or longer	(2,582)	(3,399)
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	100,467	46,601
Unrealized gross losses of AFS securities, continuous unrealized loss position	(2,582)	(3,582)
Fair value of AFS securities, continuous unrealized loss position	100,467	119,463
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	(11)	(5,010)
Fair value of AFS securities, continuous unrealized loss position, less than 12 months	3,167	336,243
Unrealized gross losses of AFS securities, continuous unrealized loss position, 12 months or longer	(5,638)	(1,452)
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	220,613	57,344
Unrealized gross losses of AFS securities, continuous unrealized loss position	(5,649)	(6,462)
Fair value of AFS securities, continuous unrealized loss position	223,780	393,587
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	(1,278)	(1,036)
Fair value of AFS securities, continuous unrealized loss position, less than 12 months	301,030	169,541
Unrealized gross losses of AFS securities, continuous unrealized loss position, 12 months or longer	(2,417)	(18,277)
Fair value of AFS securities, continuous unrealized loss position, 12 months or longer	232,407	1,193,463
Unrealized gross losses of AFS securities, continuous unrealized loss position	(3,695)	(19,313)
Fair value of AFS securities, continuous unrealized loss position	$ 533,437	$ 1,363,004

Loans Receivable - Schedule of

Loans Receivable - Schedule of Loans Receivable (including Covered Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 10,950,608	$ 9,823,270
Ratio of type of loan to total loans receivable	100.00%	100.00%
Allowance for probable losses	$ 113,494	$ 106,829	$ 114,591
Loans in process	879,484	476,796
Discount on acquired loans	11,306	30,095
Deferred net origination fees	35,404	38,916
Total loan contra accounts	1,039,688	652,636
Net Loans	9,910,920	9,170,634
Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	5,658,827
Allowance for probable losses	37,796	47,347	62,763
Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	473,069
Allowance for probable losses	1,080	990	1,695
Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	118,497
Allowance for probable losses	6,023	5,781	5,592
Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	104,568
Allowance for probable losses	2,535	2,946	3,077
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	1,124,289
Allowance for probable losses	6,925	5,304	4,248
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	1,093,639
Allowance for probable losses	8,588	8,960	7,548
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	978,589
Allowance for probable losses	28,008	24,980	16,527
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	149,717
Allowance for probable losses	813	902	928
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	139,002
Allowance for probable losses	1,888	2,939	$ 3,227
Non-acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 10,716,403	$ 9,493,987
Ratio of type of loan to total loans receivable	97.90%	96.60%
Non-acquired loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 5,621,066	$ 5,651,845
Ratio of type of loan to total loans receivable	51.30%	57.50%
Non-acquired loans | Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,110,411	$ 200,509
Ratio of type of loan to total loans receivable	10.10%	2.00%
Non-acquired loans | Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 473,069	$ 396,307
Ratio of type of loan to total loans receivable	4.30%	4.00%
Non-acquired loans | Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 116,156	$ 94,208
Ratio of type of loan to total loans receivable	1.10%	1.00%
Non-acquired loans | Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 101,853	$ 103,989
Ratio of type of loan to total loans receivable	0.90%	1.10%
Non-acquired loans | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,118,801	$ 1,125,722
Ratio of type of loan to total loans receivable	10.20%	11.50%
Non-acquired loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 956,164	$ 986,270
Ratio of type of loan to total loans receivable	8.70%	10.00%
Non-acquired loans | Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 946,648	$ 612,836
Ratio of type of loan to total loans receivable	8.60%	6.20%
Non-acquired loans | HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 134,785	$ 127,646
Ratio of type of loan to total loans receivable	1.20%	1.30%
Non-acquired loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 137,450	$ 194,655
Ratio of type of loan to total loans receivable	1.30%	2.00%
Acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 115,394	$ 166,293
Ratio of type of loan to total loans receivable	1.10%	1.70%
Credit-impaired acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 89,837	$ 87,081
Ratio of type of loan to total loans receivable	0.80%	0.90%
Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 28,974	$ 75,909
Ratio of type of loan to total loans receivable	0.30%	0.80%

Loans Receivable - Interest Rat

Loans Receivable - Interest Rate Terms (Details) $ in Thousands	Sep. 30, 2016USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	$ 6,952,290
Loans at adjustable-rate	3,998,318
Within 1 year
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	29,428
Loans at adjustable-rate	1,362,480
1 to 3 years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	326,859
Loans at adjustable-rate	1,457,584
3 to 5 years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	192,202
Loans at adjustable-rate	552,402
5 to 10 years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	693,099
Loans at adjustable-rate	625,852
10 to 20 years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	1,020,654
Loans at adjustable-rate	0
Over 20 years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans at fixed-rate	4,690,048
Loans at adjustable-rate	$ 0

Loans Receivable - Loans Receiv

Loans Receivable - Loans Receivable by Geographic Location (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 10,950,608,000	$ 9,823,270,000
Ratio of loans by geographic location to total loans	100.00%
Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 5,209,774,000
Ratio of loans by geographic location to total loans	47.60%
Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,587,599,000
Ratio of loans by geographic location to total loans	14.50%
Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,042,935,000
Ratio of loans by geographic location to total loans	9.50%
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 817,578,000
Ratio of loans by geographic location to total loans	7.50%
Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 768,060,000
Ratio of loans by geographic location to total loans	7.00%
Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 465,372,000
Ratio of loans by geographic location to total loans	4.20%
New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 457,487,000
Ratio of loans by geographic location to total loans	4.20%
Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 411,600,000
Ratio of loans by geographic location to total loans	3.80%
Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 190,203,000
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	$ 5,658,827,000
Ratio of loans by geographic location to total loans	51.70%
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	$ 2,926,555,000
Ratio of loans by geographic location to total loans	26.80%
Percentage of loans by geographic area as a percentage of loan type	51.60%
Single-family residential | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 664,932,000
Ratio of loans by geographic location to total loans	6.10%
Percentage of loans by geographic area as a percentage of loan type	11.80%
Single-family residential | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 546,080,000
Ratio of loans by geographic location to total loans	5.00%
Percentage of loans by geographic area as a percentage of loan type	9.70%
Single-family residential | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 216,902,000
Ratio of loans by geographic location to total loans	2.00%
Percentage of loans by geographic area as a percentage of loan type	3.80%
Single-family residential | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 474,390,000
Ratio of loans by geographic location to total loans	4.30%
Percentage of loans by geographic area as a percentage of loan type	8.40%
Single-family residential | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 284,212,000
Ratio of loans by geographic location to total loans	2.50%
Percentage of loans by geographic area as a percentage of loan type	5.00%
Single-family residential | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 186,061,000
Ratio of loans by geographic location to total loans	1.80%
Percentage of loans by geographic area as a percentage of loan type	3.30%
Single-family residential | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 202,541,000
Ratio of loans by geographic location to total loans	1.80%
Percentage of loans by geographic area as a percentage of loan type	3.60%
Single-family residential | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 157,154,000
Ratio of loans by geographic location to total loans	1.40%
Percentage of loans by geographic area as a percentage of loan type	2.80%
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,124,289,000
Ratio of loans by geographic location to total loans	10.30%
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	$ 287,999,000
Ratio of loans by geographic location to total loans	2.60%
Percentage of loans by geographic area as a percentage of loan type	25.70%
Multi-family | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 332,311,000
Ratio of loans by geographic location to total loans	3.00%
Percentage of loans by geographic area as a percentage of loan type	29.60%
Multi-family | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 292,830,000
Ratio of loans by geographic location to total loans	2.70%
Percentage of loans by geographic area as a percentage of loan type	26.00%
Multi-family | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 2,448,000
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%
Multi-family | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 47,374,000
Ratio of loans by geographic location to total loans	0.50%
Percentage of loans by geographic area as a percentage of loan type	4.20%
Multi-family | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 33,043,000
Ratio of loans by geographic location to total loans	0.30%
Percentage of loans by geographic area as a percentage of loan type	2.90%
Multi-family | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 97,699,000
Ratio of loans by geographic location to total loans	0.90%
Percentage of loans by geographic area as a percentage of loan type	8.70%
Multi-family | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 29,458,000
Ratio of loans by geographic location to total loans	0.30%
Percentage of loans by geographic area as a percentage of loan type	2.60%
Multi-family | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,127,000
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	$ 118,497,000
Ratio of loans by geographic location to total loans	1.10%
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	$ 74,017,000
Ratio of loans by geographic location to total loans	0.70%
Percentage of loans by geographic area as a percentage of loan type	62.50%
Land - acquisition & development | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 10,953,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	9.20%
Land - acquisition & development | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 4,142,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	3.50%
Land - acquisition & development | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 443,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.40%
Land - acquisition & development | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 958,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.80%
Land - acquisition & development | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 4,761,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	4.00%
Land - acquisition & development | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 12,417,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	10.50%
Land - acquisition & development | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 10,806,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	9.10%
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	0.10%
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	$ 104,568,000
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 - consumer lot loans | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 59,371,000
Ratio of loans by geographic location to total loans	0.50%
Percentage of loans by geographic area as a percentage of loan type	56.80%
Land - consumer lot loans | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 12,403,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	11.90%
Land - consumer lot loans | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 9,014,000
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 | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 11,157,000
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	10.70%
Land - consumer lot loans | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 3,448,000
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 | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 3,910,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	3.70%
Land - consumer lot loans | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,274,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	1.20%
Land - consumer lot loans | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 979,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.90%
Land - consumer lot loans | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 3,012,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	2.90%
Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 473,069,000
Ratio of loans by geographic location to total loans	4.40%
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	$ 277,877,000
Ratio of loans by geographic location to total loans	2.50%
Percentage of loans by geographic area as a percentage of loan type	58.90%
Construction - custom | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 52,709,000
Ratio of loans by geographic location to total loans	0.50%
Percentage of loans by geographic area as a percentage of loan type	11.10%
Construction - custom | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 45,536,000
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	9.60%
Construction - custom | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 11,228,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	2.40%
Construction - custom | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 33,036,000
Ratio of loans by geographic location to total loans	0.30%
Percentage of loans by geographic area as a percentage of loan type	7.00%
Construction - custom | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 17,120,000
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	3.60%
Construction - custom | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 18,128,000
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	3.80%
Construction - custom | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 10,610,000
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	$ 6,825,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	1.40%
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,110,411,000
Ratio of loans by geographic location to total loans	10.10%
Percentage of loans by geographic area as a percentage of loan type	100.00%
Construction | Washington
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 470,720,000
Ratio of loans by geographic location to total loans	4.30%
Percentage of loans by geographic area as a percentage of loan type	42.40%
Construction | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 122,958,000
Ratio of loans by geographic location to total loans	1.10%
Percentage of loans by geographic area as a percentage of loan type	11.10%
Construction | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 43,300,000
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	3.90%
Construction | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 110,843,000
Ratio of loans by geographic location to total loans	1.00%
Percentage of loans by geographic area as a percentage of loan type	10.00%
Construction | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 143,246,000
Ratio of loans by geographic location to total loans	1.30%
Percentage of loans by geographic area as a percentage of loan type	12.90%
Construction | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 64,510,000
Ratio of loans by geographic location to total loans	0.60%
Percentage of loans by geographic area as a percentage of loan type	5.80%
Construction | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 47,763,000
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	4.30%
Construction | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 107,071,000
Ratio of loans by geographic location to total loans	1.00%
Percentage of loans by geographic area as a percentage of loan type	9.60%
Construction | 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	$ 1,093,639,000
Ratio of loans by geographic location to total loans	9.90%
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	$ 482,802,000
Ratio of loans by geographic location to total loans	4.40%
Percentage of loans by geographic area as a percentage of loan type	44.00%
Commercial real estate | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 171,093,000
Ratio of loans by geographic location to total loans	1.60%
Percentage of loans by geographic area as a percentage of loan type	15.60%
Commercial real estate | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 38,302,000
Ratio of loans by geographic location to total loans	0.30%
Percentage of loans by geographic area as a percentage of loan type	3.50%
Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 277,438,000
Ratio of loans by geographic location to total loans	2.50%
Percentage of loans by geographic area as a percentage of loan type	25.40%
Commercial real estate | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 11,499,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	1.10%
Commercial real estate | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 34,075,000
Ratio of loans by geographic location to total loans	0.30%
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	$ 68,385,000
Ratio of loans by geographic location to total loans	0.60%
Percentage of loans by geographic area as a percentage of loan type	6.30%
Commercial real estate | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 6,151,000
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 | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 3,894,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.40%
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 978,589,000
Ratio of loans by geographic location to total loans	9.00%
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	$ 500,540,000
Ratio of loans by geographic location to total loans	4.60%
Percentage of loans by geographic area as a percentage of loan type	51.00%
Commercial & industrial | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 203,377,000
Ratio of loans by geographic location to total loans	1.90%
Percentage of loans by geographic area as a percentage of loan type	20.80%
Commercial & industrial | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 47,584,000
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	4.90%
Commercial & industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 94,215,000
Ratio of loans by geographic location to total loans	0.90%
Percentage of loans by geographic area as a percentage of loan type	9.60%
Commercial & industrial | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 46,497,000
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	4.80%
Commercial & industrial | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 16,627,000
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	1.70%
Commercial & industrial | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 10,860,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	1.10%
Commercial & industrial | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 42,594,000
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	4.40%
Commercial & industrial | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 16,295,000
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%
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 139,002,000
Ratio of loans by geographic location to total loans	1.20%
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	$ 41,212,000
Ratio of loans by geographic location to total loans	0.40%
Percentage of loans by geographic area as a percentage of loan type	29.60%
Consumer | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 3,152,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	2.30%
Consumer | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 309,000
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 | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 91,874,000
Ratio of loans by geographic location to total loans	0.80%
Percentage of loans by geographic area as a percentage of loan type	66.10%
Consumer | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 39,000
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 | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 141,000
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 | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,110,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.80%
Consumer | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,085,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.80%
Consumer | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 80,000
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%
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 149,717,000
Ratio of loans by geographic location to total loans	1.40%
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	$ 88,681,000
Ratio of loans by geographic location to total loans	0.80%
Percentage of loans by geographic area as a percentage of loan type	59.10%
HELOC | Oregon
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 13,711,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	9.20%
HELOC | Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 15,838,000
Ratio of loans by geographic location to total loans	0.20%
Percentage of loans by geographic area as a percentage of loan type	10.60%
HELOC | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,030,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	0.70%
HELOC | Utah
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 7,573,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	5.10%
HELOC | Idaho
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 6,973,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	4.70%
HELOC | New Mexico
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 13,790,000
Ratio of loans by geographic location to total loans	0.10%
Percentage of loans by geographic area as a percentage of loan type	9.20%
HELOC | Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 305,000
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%
HELOC | Nevada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,816,000
Ratio of loans by geographic location to total loans	0.00%
Percentage of loans by geographic area as a percentage of loan type	1.20%
Loans Receivable from Related Party Including Unfunded Loan Commitment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans granted to officers, directors, and related interests	$ 57,153,000	$ 55,965,000

Loans Receivable - Loans Impair

Loans Receivable - Loans Impaired, Loan Commitments and Loans Serviced (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Receivables [Abstract]
Recorded investment in impaired loans	$ 285,243	$ 341,579
TDRs included in impaired loans	261,531	302,713
Allocated reserves on impaired loans	1,980	2,323
Specific reserves on impaired loans	366	275
Average balance of impaired loans for year ended	265,771	333,815
Interest income from impaired loans for year ended	11,314	14,855
Outstanding fixed-rate origination commitments	331,947	230,869
Gross loans serviced for others	$ 80,896	$ 72,083

Loans Receivable - Loans on Non

Loans Receivable - Loans on Non-accrual Status (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 42,414	$ 67,810
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	$ 33,148	$ 59,074
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	78.20%	87.10%
Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 0	$ 754
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.00%	1.10%
Construction - custom
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 0	$ 732
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.00%	1.10%
Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 58	$ 0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.10%	0.00%
Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 510	$ 1,273
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.20%	1.90%
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 776	$ 2,558
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.80%	3.80%
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 7,100	$ 2,176
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	16.70%	3.20%
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 583	$ 0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.40%	0.00%
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 239	$ 563
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.60%	0.80%
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 0	$ 680
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.00%	1.00%

Loans Receivable - Loans Rece51

Loans Receivable - Loans Receivable, Analysis of Age of Loans in Past Due Status (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 10,071,124
Financing receivable, recorded investment, current	10,002,844
Financing receivable, recorded investment, past due	$ 68,280
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.68%	0.88%
Ratio of past due to total loans, net of charge-offs and LIPs, current	99.32%
Ratio of past due to total loans, net of charge-offs and LIPs, past due	0.68%
Financing Receivables, 1 to 29 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 25,007
Ratio of past due to total loans, net of charge-offs and LIPs, past due	0.25%
Financing Receivables, 30 to 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 7,014
Ratio of past due to total loans, net of charge-offs and LIPs, past due	0.07%
Financing Receivables, 60 to 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 36,259
Ratio of past due to total loans, net of charge-offs and LIPs, past due	0.36%
Non-acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 9,836,919
Financing receivable, recorded investment, current	9,780,558
Financing receivable, recorded investment, past due	$ 56,361
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.57%
Non-acquired loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 5,624,783
Financing receivable, recorded investment, current	5,574,384
Financing receivable, recorded investment, past due	$ 50,399
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.90%
Non-acquired loans | Construction - speculative
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 497,393
Financing receivable, recorded investment, current	497,393
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	$ 229,957
Financing receivable, recorded investment, current	229,419
Financing receivable, recorded investment, past due	$ 538
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.23%
Non-acquired loans | Land - acquisition & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 88,662
Financing receivable, recorded investment, current	88,662
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 | Land - consumer lot loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 102,386
Financing receivable, recorded investment, current	100,373
Financing receivable, recorded investment, past due	$ 2,013
Ratio of past due loans to total loans, net of charge-offs and LIPs	1.97%
Non-acquired loans | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 1,119,042
Financing receivable, recorded investment, current	1,117,453
Financing receivable, recorded investment, past due	$ 1,589
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.14%
Non-acquired loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 955,944
Financing receivable, recorded investment, current	955,604
Financing receivable, recorded investment, past due	$ 340
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.04%
Non-acquired loans | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 947,703
Financing receivable, recorded investment, current	947,661
Financing receivable, recorded investment, past due	$ 42
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.00%
Non-acquired loans | HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 134,214
Financing receivable, recorded investment, current	133,683
Financing receivable, recorded investment, past due	$ 531
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.40%
Non-acquired loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	$ 136,835
Financing receivable, recorded investment, current	135,926
Financing receivable, recorded investment, past due	$ 909
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.66%
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	$ 24,656
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	20,917
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	538
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	0
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	816
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	1,190
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	0
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	0
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	490
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	705
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	6,608
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	5,173
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	0
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	687
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	399
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	183
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	42
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	0
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	124
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	25,097
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	24,309
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	0
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	0
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	510
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	0
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	157
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	0
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	41
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	80
Acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	115,394
Financing receivable, recorded investment, current	114,770
Financing receivable, recorded investment, past due	$ 624
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.54%
Acquired loans | Financing Receivables, 1 to 29 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 124
Acquired loans | Financing Receivables, 30 to 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	2
Acquired loans | Financing Receivables, 60 to 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	498
Credit-impaired acquired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	89,837
Financing receivable, recorded investment, current	84,625
Financing receivable, recorded investment, past due	$ 5,212
Ratio of past due loans to total loans, net of charge-offs and LIPs	5.80%
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	$ 227
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	142
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	4,843
Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of LIPs & charge-offs	28,974
Financing receivable, recorded investment, current	22,891
Financing receivable, recorded investment, past due	$ 6,083
Ratio of past due loans to total loans, net of charge-offs and LIPs	20.99%
Covered Loans | Financing Receivables, 1 to 29 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 0
Covered Loans | Financing Receivables, 30 to 59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	262
Covered Loans | Financing Receivables, 60 to 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, recorded investment, past due	$ 5,821

Loans Receivable - Troubled Deb

Loans Receivable - Troubled Debt Restructurings and Loan Modifications (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2016USD ($)contract	Sep. 30, 2015USD ($)contract
Financing Receivable, Modifications [Line Items]
Approximate rate reduction concession, minimum	1.00%
Approximate rate reduction concession, maximum	2.00%
TDRs included in impaired loans	$ 261,531	$ 302,713
Percent of restructured loans performing	96.20%
Single family residential loans as percentage of restructured loans	87.20%
Number of contracts | contract	139	78
Pre-modification, outstanding recorded investment	$ 27,184	$ 18,930
Post-modification, outstanding recorded investment	$ 27,184	$ 18,930
Subsequent default, number of contracts | contract	25	20
Subsequent default, recorded investment	$ 6,086	$ 3,218
Single-family residential
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	120	62
Pre-modification, outstanding recorded investment	$ 23,541	$ 13,378
Post-modification, outstanding recorded investment	$ 23,541	$ 13,378
Subsequent default, number of contracts | contract	17	18
Subsequent default, recorded investment	$ 4,875	$ 2,917
Construction
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	2
Pre-modification, outstanding recorded investment	$ 0	$ 701
Post-modification, outstanding recorded investment	$ 0	$ 701
Subsequent default, number of contracts | contract	1	0
Subsequent default, recorded investment	$ 279	$ 0
Land - consumer lot loans
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	10	9
Pre-modification, outstanding recorded investment	$ 970	$ 1,546
Post-modification, outstanding recorded investment	$ 970	$ 1,546
Subsequent default, number of contracts | contract	5	2
Subsequent default, recorded investment	$ 606	$ 301
Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	7	3
Pre-modification, outstanding recorded investment	$ 2,523	$ 3,175
Post-modification, outstanding recorded investment	$ 2,523	$ 3,175
Subsequent default, number of contracts | contract	2	0
Subsequent default, recorded investment	$ 326	$ 0
HELOC
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1	1
Pre-modification, outstanding recorded investment	$ 126	$ 50
Post-modification, outstanding recorded investment	$ 126	$ 50
Consumer
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1	1
Pre-modification, outstanding recorded investment	$ 24	$ 80
Post-modification, outstanding recorded investment	$ 24	$ 80
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 - Changes in A

Loans Receivable - Changes in Accretable Yield for Acquired Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretion	$ 236	$ 518
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	72,705	97,125
Carrying amount, balance at beginning of period	111,300	135,826
Accretable yield, reclassifications from nonaccretable balance, net	4,867	6,307
Carrying amount, reclassifications from nonaccretable balance, net	0	0
Accretable yield, accretion	(18,730)	(30,727)
Accretion	18,730	30,727
Accretable yield, transfers to real estate owned	0	0
Carrying amount, transfers to real estate owned	(175)	(2,975)
Accretable yield, payments received, net	0	0
Carrying amount, payments received, net	(38,094)	(52,278)
Accretable yield, balance at end of period	58,842	72,705
Carrying amount, balance at end of period	91,761	111,300
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	7,204	14,513
Carrying amount, balance at beginning of period	187,080	275,862
Accretable yield, reclassifications from nonaccretable balance, net	0	346
Carrying amount, reclassifications from nonaccretable balance, net	0	0
Accretable yield, accretion	(2,982)	(7,655)
Accretion	2,982	7,655
Accretable yield, transfers to real estate owned	0	0
Carrying amount, transfers to real estate owned	0	(150)
Accretable yield, payments received, net	0	0
Carrying amount, payments received, net	(58,930)	(96,287)
Accretable yield, balance at end of period	4,222	7,204
Carrying amount, balance at end of period	$ 131,132	$ 187,080

Loans Receivable - Schedule o54

Loans Receivable - Schedule of Covered Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recovery term (in years)	3 years
Single family residential coverage term (in years)	4 years
Loans receivable, gross	$ 10,950,608	$ 9,823,270
Discount balance related to acquired loans		2,738
FDIC Indemnification Asset Movement Analysis
Balance at beginning of year	16,275	36,860
Additions and impairment	0	(1,795)
Payments received	(1,730)	(720)
Amortization	(2,012)	(18,588)
Accretion	236	518
Balance at end of year	$ 12,769	$ 16,275

Allowance for Losses on Loans -

Allowance for Losses on Loans - Allowance for Losses on Loans (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				$ 106,829				$ 114,591	$ 106,829	$ 114,591
Charge-offs									(6,000)	(14,600)
Recoveries									19,065	19,970
Provision & Transfers									(6,400)	(13,132)
Ending Allowance	$ 113,494				$ 106,829				113,494	106,829	$ 114,591
Provision (release) for loan losses	(3,100)	$ (1,650)	$ (1,500)	0	219	$ (1,932)	$ (3,949)	(5,500)	(6,250)	(11,162)	(15,401)
Single-family residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				47,347				62,763	47,347	62,763
Charge-offs									(3,106)	(5,524)
Recoveries									3,251	13,403
Provision & Transfers									(9,696)	(23,295)
Ending Allowance	37,796				47,347				37,796	47,347	62,763
Construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				6,680				6,742	6,680	6,742
Charge-offs									0	(388)
Recoveries									745	120
Provision & Transfers									12,413	206
Ending Allowance	19,838				6,680				19,838	6,680	6,742
Construction - custom
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				990				1,695	990	1,695
Charge-offs									(60)	0
Recoveries									60	0
Provision & Transfers									90	(705)
Ending Allowance	1,080				990				1,080	990	1,695
Land - acquisition & development
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				5,781				5,592	5,781	5,592
Charge-offs									(42)	(38)
Recoveries									8,220	207
Provision & Transfers									(7,936)	20
Ending Allowance	6,023				5,781				6,023	5,781	5,592
Land - consumer lot loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				2,946				3,077	2,946	3,077
Charge-offs									(732)	(459)
Recoveries									5	221
Provision & Transfers									316	107
Ending Allowance	2,535				2,946				2,535	2,946	3,077
Multi-family
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				5,304				4,248	5,304	4,248
Charge-offs									0	0
Recoveries									0	220
Provision & Transfers									1,621	836
Ending Allowance	6,925				5,304				6,925	5,304	4,248
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				8,960				7,548	8,960	7,548
Charge-offs									(103)	(1,711)
Recoveries									1,812	735
Provision & Transfers									(2,081)	2,388
Ending Allowance	8,588				8,960				8,588	8,960	7,548
Commercial & industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				24,980				16,527	24,980	16,527
Charge-offs									(941)	(3,354)
Recoveries									2,933	1,374
Provision & Transfers									1,036	10,433
Ending Allowance	28,008				24,980				28,008	24,980	16,527
HELOC
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				902				928	902	928
Charge-offs									(54)	(66)
Recoveries									21	2
Provision & Transfers									(56)	38
Ending Allowance	813				902				813	902	928
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				2,939				3,227	2,939	3,227
Charge-offs									(962)	(3,060)
Recoveries									2,018	3,688
Provision & Transfers									(2,107)	(916)
Ending Allowance	$ 1,888				2,939				1,888	2,939	3,227
Covered Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance				$ 0				$ 2,244	$ 0	2,244
Charge-offs										0
Recoveries										0
Provision & Transfers										(2,244)
Ending Allowance					$ 0					$ 0	$ 2,244

Allowance for Losses on Loans56

Allowance for Losses on Loans - Narrative (Details) - USD ($)	3 Months Ended										12 Months Ended
	Sep. 30, 2016		Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015		Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016		Sep. 30, 2015		Sep. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision (release) for loan losses	$ (3,100,000)		$ (1,650,000)	$ (1,500,000)	$ 0	$ 219,000		$ (1,932,000)	$ (3,949,000)	$ (5,500,000)	$ (6,250,000)		$ (11,162,000)		$ (15,401,000)
Allowance for credit losses, charge-offs, net of recoveries											(13,065,000)		(5,370,000)
Nonaccrual loans by portfolio segment	42,414,000					67,810,000					42,414,000		67,810,000
Loans receivable, gross	10,950,608,000					9,823,270,000					10,950,608,000		9,823,270,000
Covered loans, allowance for losses	0					0					0		0
Allowance for probable losses	113,494,000					106,829,000					113,494,000		106,829,000		$ 114,591,000
Loans Collectively Evaluated for Impairment
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, gross	9,784,140,000	[1]				8,963,453,000	[2]				9,784,140,000	[1]	8,963,453,000	[2]
Allowance for probable losses	113,128,000					106,554,000					113,128,000		106,554,000
Loans Individually Evaluated for Impairment
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, gross	34,271,000	[1]				85,513,000	[2]				34,271,000	[1]	85,513,000	[2]
Allowance for probable losses	366,000					275,000					366,000		275,000
Covered Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, gross	28,974,000					75,909,000					28,974,000		75,909,000
Non-Performing Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Nonaccrual loans by portfolio segment	42,414,000					67,810,000					42,414,000		67,810,000
Loans receivable, gross	$ 71,441,000					$ 128,908,000					$ 71,441,000		$ 128,908,000
Ratio of non-performing assets to total assets	0.48%					0.88%					0.48%		0.88%
Acquired loans subject to general allowance	$ 20,175,000										$ 20,175,000
[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 Loans57

Allowance for Losses on Loans - Loans Collectively and Individually Evaluated for Impairment (Details) - USD ($) $ in Thousands	Sep. 30, 2016		Sep. 30, 2015		Sep. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Specific reserves on impaired loans	$ 366		$ 275
Amount of related allowance included in general reserves	3,549		6,403
General/specific reserve allocation	113,494		106,829		$ 114,591
Gross loans subject to general/specific reserve	10,950,608		9,823,270
Single-family residential
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	37,796		47,347		62,763
Gross loans subject to general/specific reserve	5,658,827
Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	19,838		6,680		6,742
Gross loans subject to general/specific reserve	1,110,411
Construction - custom
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	1,080		990		1,695
Gross loans subject to general/specific reserve	473,069
Land - acquisition & development
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	6,023		5,781		5,592
Gross loans subject to general/specific reserve	118,497
Land - consumer lot loans
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	2,535		2,946		3,077
Gross loans subject to general/specific reserve	104,568
Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	6,925		5,304		4,248
Gross loans subject to general/specific reserve	1,124,289
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	8,588		8,960		7,548
Gross loans subject to general/specific reserve	1,093,639
Commercial & industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	28,008		24,980		16,527
Gross loans subject to general/specific reserve	978,589
HELOC
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	813		902		928
Gross loans subject to general/specific reserve	149,717
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	1,888		2,939		$ 3,227
Gross loans subject to general/specific reserve	139,002
Loans Collectively Evaluated for Impairment
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	113,128		106,554
Gross loans subject to general/specific reserve	$ 9,784,140	[1]	$ 8,963,453	[2]
Ratio	1.20%		1.20%
Loans Collectively Evaluated for Impairment | Single-family residential
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 37,536		$ 47,073
Gross loans subject to general/specific reserve	$ 5,585,912		$ 5,595,752
Ratio	0.70%		0.80%
Loans Collectively Evaluated for Impairment | Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 19,838		$ 6,680
Gross loans subject to general/specific reserve	$ 498,450		$ 124,679
Ratio	4.00%		5.40%
Loans Collectively Evaluated for Impairment | Construction - custom
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 1,080		$ 990
Gross loans subject to general/specific reserve	$ 229,298		$ 205,692
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	$ 6,022		$ 5,781
Gross loans subject to general/specific reserve	$ 90,850		$ 72,602
Ratio	6.60%		8.00%
Loans Collectively Evaluated for Impairment | Land - consumer lot loans
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 2,535		$ 2,946
Gross loans subject to general/specific reserve	$ 92,828		$ 93,103
Ratio	2.70%		3.20%
Loans Collectively Evaluated for Impairment | Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 6,911		$ 5,304
Gross loans subject to general/specific reserve	$ 1,091,974		$ 1,062,194
Ratio	0.60%		0.50%
Loans Collectively Evaluated for Impairment | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 8,497		$ 8,960
Gross loans subject to general/specific reserve	$ 957,380		$ 844,691
Ratio	0.90%		1.10%
Loans Collectively Evaluated for Impairment | Commercial & industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 28,008		$ 24,980
Gross loans subject to general/specific reserve	$ 966,930		$ 643,577
Ratio	2.90%		3.90%
Loans Collectively Evaluated for Impairment | HELOC
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 813		$ 902
Gross loans subject to general/specific reserve	$ 133,203		$ 126,594
Ratio	0.60%		0.70%
Loans Collectively Evaluated for Impairment | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 1,888		$ 2,938
Gross loans subject to general/specific reserve	$ 137,315		$ 194,569
Ratio	1.40%		1.50%
Loans Individually Evaluated for Impairment
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 366		$ 275
Gross loans subject to general/specific reserve	$ 34,271	[1]	$ 85,513	[2]
Ratio	1.10%		0.30%
Loans Individually Evaluated for Impairment | Single-family residential
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 260		$ 275
Gross loans subject to general/specific reserve	$ 19,629		$ 51,718
Ratio	1.30%		0.50%
Loans Individually Evaluated for Impairment | Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 0		$ 0
Gross loans subject to general/specific reserve	$ 0		$ 5,441
Ratio	0.00%		0.00%
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	$ 330		$ 0
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	$ 2		$ 0
Gross loans subject to general/specific reserve	$ 850		$ 2,198
Ratio	0.20%		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	$ 558		$ 10,824
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment | Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 13		$ 0
Gross loans subject to general/specific reserve	$ 1,505		$ 5,348
Ratio	0.90%		0.00%
Loans Individually Evaluated for Impairment | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
General/specific reserve allocation	$ 91		$ 0
Gross loans subject to general/specific reserve	$ 11,157		$ 8,826
Ratio	0.80%		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		$ 0
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	$ 239		$ 1,072
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	$ 3		$ 86
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 Loans58

Allowance for Losses on Loans - Internally Assigned Grade (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 10,950,608	$ 9,823,270
Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	10,716,403	9,493,987
Acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	115,394	166,293
Credit-impaired acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	89,837	87,081
Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	28,974	75,909
Single-family residential
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	5,658,827
Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	5,621,066	5,651,845
Construction
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,110,411
Construction | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,110,411	200,509
Construction - custom
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	473,069
Construction - custom | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	473,069	396,307
Land - acquisition & development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	118,497
Land - acquisition & development | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	116,156	94,208
Land - consumer lot loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	104,568
Land - consumer lot loans | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	101,853	103,989
Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,124,289
Multi-family | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,118,801	1,125,722
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,093,639
Commercial real estate | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	956,164	986,270
Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	978,589
Commercial & industrial | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	946,648	612,836
HELOC
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	149,717
HELOC | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	134,785	127,646
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	139,002
Consumer | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	137,450	194,655
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 10,764,097	$ 9,605,919
Grade as percentage of total gross assets	98.30%	97.80%
Pass | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 10,565,849	$ 9,333,233
Pass | Acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	108,616	149,891
Pass | Credit-impaired acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	60,985	61,019
Pass | Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	28,647	61,776
Pass | Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	5,570,634	5,558,700
Pass | Construction | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,098,549	197,935
Pass | Construction - custom | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	473,069	396,307
Pass | Land - acquisition & development | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	110,125	89,656
Pass | Land - consumer lot loans | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	100,862	103,569
Pass | Multi-family | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,112,342	1,118,673
Pass | Commercial real estate | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	928,032	971,510
Pass | Commercial & industrial | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	900,571	575,034
Pass | HELOC | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	134,298	127,398
Pass | Consumer | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	137,367	194,451
Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 32,485	$ 6,721
Grade as percentage of total gross assets	0.30%	0.10%
Special mention | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 32,438	$ 6,721
Special mention | Acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	47	0
Special mention | Credit-impaired acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Special mention | Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Special mention | Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Special mention | Construction | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	8,595	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	3,237	865
Special mention | Commercial real estate | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	13,446	4,360
Special mention | Commercial & industrial | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	7,160	1,496
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	$ 154,026	$ 210,630
Grade as percentage of total gross assets	1.40%	2.10%
Substandard | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 118,116	$ 154,033
Substandard | Acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	6,731	16,402
Substandard | Credit-impaired acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	28,852	26,062
Substandard | Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	327	14,133
Substandard | Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	50,432	93,145
Substandard | Construction | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	3,267	2,574
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	6,031	4,552
Substandard | Land - consumer lot loans | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	991	420
Substandard | Multi-family | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	3,222	6,184
Substandard | Commercial real estate | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	14,686	10,400
Substandard | Commercial & industrial | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	38,917	36,306
Substandard | HELOC | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	487	248
Substandard | Consumer | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	83	204
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 0	$ 0
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	0
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	0
Doubtful | Single-family residential | Non-acquired loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Doubtful | Construction | 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 | 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 Loans59

Allowance for Losses on Loans - Credit Risk Profile Based on Payment Activity (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 10,950,608	$ 9,823,270
Nonaccrual loans by portfolio segment	42,414	67,810
Single-family residential
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	5,658,827
Construction
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,110,411
Construction - custom
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	473,069
Land - acquisition & development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	118,497
Land - consumer lot loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	104,568
Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,124,289
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,093,639
Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	978,589
HELOC
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	149,717
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	139,002
Performing Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 10,673,989	$ 9,426,177
Grade as percentage of total gross assets	99.60%	99.30%
Performing Loans | Single-family residential
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 5,587,919	$ 5,592,771
Grade as percentage of total gross assets	99.40%	99.00%
Performing Loans | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 1,110,411	$ 199,755
Grade as percentage of total gross assets	100.00%	99.60%
Performing Loans | Construction - custom
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 473,069	$ 395,575
Grade as percentage of total gross assets	100.00%	99.80%
Performing Loans | Land - acquisition & development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 116,097	$ 94,208
Grade as percentage of total gross assets	99.90%	100.00%
Performing Loans | Land - consumer lot loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 101,343	$ 102,716
Grade as percentage of total gross assets	99.50%	98.80%
Performing Loans | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 1,118,025	$ 1,123,165
Grade as percentage of total gross assets	99.90%	99.80%
Performing Loans | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 949,064	$ 984,093
Grade as percentage of total gross assets	99.30%	99.80%
Performing Loans | Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 946,065	$ 612,836
Grade as percentage of total gross assets	99.90%	100.00%
Performing Loans | HELOC
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 134,546	$ 127,083
Grade as percentage of total gross assets	99.80%	99.60%
Performing Loans | Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 137,450	$ 193,975
Grade as percentage of total gross assets	100.00%	99.70%
Non-Performing Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 71,441	$ 128,908
Nonaccrual loans by portfolio segment	$ 42,414	$ 67,810
Percentage of total gross loans	0.40%	0.70%
Non-Performing Loans | Single-family residential
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 33,148	$ 59,074
Percentage of total gross loans	0.60%	1.00%
Non-Performing Loans | Construction
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 0	$ 754
Percentage of total gross loans	0.00%	0.40%
Non-Performing Loans | Construction - custom
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 0	$ 732
Percentage of total gross loans	0.00%	0.20%
Non-Performing Loans | Land - acquisition & development
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 58	$ 0
Percentage of total gross loans	0.10%	0.00%
Non-Performing Loans | Land - consumer lot loans
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 510	$ 1,273
Percentage of total gross loans	0.50%	1.20%
Non-Performing Loans | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 776	$ 2,558
Percentage of total gross loans	0.10%	0.20%
Non-Performing Loans | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 7,100	$ 2,176
Percentage of total gross loans	0.70%	0.20%
Non-Performing Loans | Commercial & industrial
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 583	$ 0
Percentage of total gross loans	0.10%	0.00%
Non-Performing Loans | HELOC
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 239	$ 563
Percentage of total gross loans	0.20%	0.40%
Non-Performing Loans | Consumer
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 0	$ 680
Percentage of total gross loans	0.00%	0.30%

Allowance for Losses on Loans60

Allowance for Losses on Loans - Impaired Loans Based on Loan Types (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016		Sep. 30, 2015
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 285,243		$ 341,579
Unpaid principal balance	321,743		381,223
Related allowance	3,915	[1]	6,678	[2]
Average recorded investment	265,771		333,815
Amount of related allowance included in specific reserves	366		275
Amount of related allowance included in general reserves	3,549		6,403
Single-family residential
Financing Receivable, Impaired [Line Items]
Recorded investment	237,813		276,711
Unpaid principal balance	243,961		282,912
Related allowance	3,809		6,678
Average recorded investment	223,143		274,097
Construction
Financing Receivable, Impaired [Line Items]
Recorded investment	0		5,441
Unpaid principal balance	0		7,929
Related allowance	0		0
Average recorded investment	0		5,903
Construction - custom
Financing Receivable, Impaired [Line Items]
Recorded investment	0		554
Unpaid principal balance	0		554
Related allowance	0		0
Average recorded investment	0		182
Land - acquisition & development
Financing Receivable, Impaired [Line Items]
Recorded investment	1,292		5,056
Unpaid principal balance	11,095		12,852
Related allowance	1		0
Average recorded investment	2,380		4,404
Land - consumer lot loans
Financing Receivable, Impaired [Line Items]
Recorded investment	10,129		12,016
Unpaid principal balance	11,287		12,368
Related allowance	1		0
Average recorded investment	9,865		11,868
Multi-family
Financing Receivable, Impaired [Line Items]
Recorded investment	1,899		7,593
Unpaid principal balance	5,477		10,877
Related allowance	13		0
Average recorded investment	2,160		5,277
Commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded investment	31,175		28,551
Unpaid principal balance	44,149		36,698
Related allowance	91		0
Average recorded investment	25,571		27,016
Commercial & industrial
Financing Receivable, Impaired [Line Items]
Recorded investment	1,030		2,955
Unpaid principal balance	3,082		13,066
Related allowance	0		0
Average recorded investment	863		2,681
HELOC
Financing Receivable, Impaired [Line Items]
Recorded investment	1,715		2,126
Unpaid principal balance	1,836		2,975
Related allowance	0		0
Average recorded investment	1,578		1,895
Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	190		576
Unpaid principal balance	856		992
Related allowance	0		0
Average recorded investment	211		492
No Allowance Recorded
Financing Receivable, Impaired [Line Items]
Recorded investment	23,712		38,866
Unpaid principal balance	50,196		70,564
Related allowance	0		0
Average recorded investment	15,479		29,474
No Allowance Recorded | Single-family residential
Financing Receivable, Impaired [Line Items]
Recorded investment	9,627		17,250
Unpaid principal balance	11,366		19,644
Related allowance	0		0
Average recorded investment	6,511		14,069
No Allowance Recorded | Construction
Financing Receivable, Impaired [Line Items]
Recorded investment	0		453
Unpaid principal balance	0		2,151
Related allowance	0		0
Average recorded investment	0		471
No Allowance Recorded | Construction - custom
Financing Receivable, Impaired [Line Items]
Recorded investment	0		554
Unpaid principal balance	0		554
Related allowance	0		0
Average recorded investment	0		182
No Allowance Recorded | Land - acquisition & development
Financing Receivable, Impaired [Line Items]
Recorded investment	138		2,570
Unpaid principal balance	9,001		9,426
Related allowance	0		0
Average recorded investment	614		926
No Allowance Recorded | Land - consumer lot loans
Financing Receivable, Impaired [Line Items]
Recorded investment	499		727
Unpaid principal balance	609		814
Related allowance	0		0
Average recorded investment	317		544
No Allowance Recorded | Multi-family
Financing Receivable, Impaired [Line Items]
Recorded investment	394		3,770
Unpaid principal balance	3,972		7,054
Related allowance	0		0
Average recorded investment	638		1,545
No Allowance Recorded | Commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded investment	11,741		9,427
Unpaid principal balance	21,301		15,620
Related allowance	0		0
Average recorded investment	6,260		8,130
No Allowance Recorded | Commercial & industrial
Financing Receivable, Impaired [Line Items]
Recorded investment	1,030		2,955
Unpaid principal balance	3,082		13,066
Related allowance	0		0
Average recorded investment	863		2,681
No Allowance Recorded | HELOC
Financing Receivable, Impaired [Line Items]
Recorded investment	209		683
Unpaid principal balance	315		1,532
Related allowance	0		0
Average recorded investment	165		536
No Allowance Recorded | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	74		477
Unpaid principal balance	550		703
Related allowance	0		0
Average recorded investment	111		390
Allowance Recorded
Financing Receivable, Impaired [Line Items]
Recorded investment	261,531		302,713
Unpaid principal balance	271,547		310,659
Related allowance	3,915	[1]	6,678	[2]
Average recorded investment	250,292		304,341
Allowance Recorded | Single-family residential
Financing Receivable, Impaired [Line Items]
Recorded investment	228,186		259,461
Unpaid principal balance	232,595		263,268
Related allowance	3,809		6,678
Average recorded investment	216,632		260,028
Allowance Recorded | Construction
Financing Receivable, Impaired [Line Items]
Recorded investment	0		4,988
Unpaid principal balance	0		5,778
Related allowance	0		0
Average recorded investment	0		5,432
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	1,154		2,486
Unpaid principal balance	2,094		3,426
Related allowance	1		0
Average recorded investment	1,766		3,478
Allowance Recorded | Land - consumer lot loans
Financing Receivable, Impaired [Line Items]
Recorded investment	9,630		11,289
Unpaid principal balance	10,678		11,554
Related allowance	1		0
Average recorded investment	9,548		11,324
Allowance Recorded | Multi-family
Financing Receivable, Impaired [Line Items]
Recorded investment	1,505		3,823
Unpaid principal balance	1,505		3,823
Related allowance	13		0
Average recorded investment	1,522		3,732
Allowance Recorded | Commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded investment	19,434		19,124
Unpaid principal balance	22,848		21,078
Related allowance	91		0
Average recorded investment	19,311		18,886
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	1,506		1,443
Unpaid principal balance	1,521		1,443
Related allowance	0		0
Average recorded investment	1,413		1,359
Allowance Recorded | Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	116		99
Unpaid principal balance	306		289
Related allowance	0		0
Average recorded investment	$ 100		$ 102
[1]	Includes $366,000 of specific reserves and $3,549,000 included in the general reserves.
[2]	Includes $275,000 of specific reserves and $6,403,000 included in the general reserves.

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Measured on Recurring Basis (Details) - USD ($)	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	$ 1,922,894,000	$ 2,380,563,000
Total Financial Assets	3,364,450,000	4,017,983,000
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	1,922,894,000	2,380,563,000
Interest rate contracts	20,895,000	11,879,000
Total Financial Assets	1,943,789,000	2,392,442,000
Total Financial Liabilities	55,554,000	27,400,000
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	20,895,000	11,879,000
Fair Value, Measurements, Recurring | Commercial loan hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	3,312,000	966,000
Fair Value, Measurements, Recurring | Long term borrowing hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	31,347,000	14,555,000
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	101,824,000	101,952,000
Interest rate contracts	0
Total Financial Assets	101,824,000	101,952,000
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, at fair value	1,821,070,000	2,278,611,000
Interest rate contracts	20,895,000	11,879,000
Total Financial Assets	1,841,965,000	2,290,490,000
Total Financial Liabilities	55,554,000	27,400,000
Fair Value, Measurements, Recurring | Level 2 | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	20,895,000	11,879,000
Fair Value, Measurements, Recurring | Level 2 | Commercial loan hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	3,312,000	966,000
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	31,347,000	14,555,000
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0	0
Interest rate contracts	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	0
Fair Value, Measurements, Recurring | Level 3 | 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 3 | Long term borrowing hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	0	0
Equity securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	101,824,000	101,952,000
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, at fair value	101,824,000	101,952,000
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, at fair value	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, at fair value	0	0
U.S. government and agency securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	259,351,000	482,464,000
U.S. government and agency securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0	0
U.S. government and agency securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	259,351,000	482,464,000
U.S. government and agency securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0	0
Municipal bonds | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	27,670,000	27,123,000
Municipal bonds | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0	0
Municipal bonds | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	27,670,000	27,123,000
Municipal bonds | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0	0
Corporate debt securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	461,138,000	505,800,000
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, at fair value	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, at fair value	461,138,000	505,800,000
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, at fair value	0	0
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, at fair value	993,041,000	0
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, at fair value	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, at fair value	993,041,000
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, at fair value	0
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, at fair value	79,870,000	1,160,518,000
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, at fair value	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, at fair value	79,870,000	1,160,518,000
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, at fair value	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, at fair value	0	102,706,000
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, at fair value	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, at fair value	0	102,706,000
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, at fair value	$ 0	$ 0

Fair Value Measurements - Fai62

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, 2016		Sep. 30, 2015		Sep. 30, 2016		Sep. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	$ 42,666		$ 88,183		$ 42,666		$ 88,183
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	42,666		88,183		42,666		88,183
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	17,476	[1]	6,735	[2]	17,476	[1]	6,735	[2]
Impaired loans | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	0		0		0		0
Impaired loans | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	0		0		0		0
Impaired loans | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	17,476		6,735		17,476		6,735
Real estate held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on nonrecurring basis	25,190	[3]	81,448	[4]	25,190	[3]	81,448	[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		0		0		0
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		0		0		0
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	25,190		81,448		25,190		81,448
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	(1,477)		(694)		(8,183)		3,508
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	(474)		(40)		(4,236)		(4,241)
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	$ (1,003)		$ (654)		$ (3,947)		$ 7,749
[1]	The gains (losses) represent remeasurements of collateral-dependent impaired loans.
[2]	The gains (losses) represent remeasurements of collateral-dependent impaired loans.
[3]	The gains (losses) represent aggregate writedowns and charge-offs on real estate owned.
[4]	The gains (losses) represent aggregate writedowns and charge-offs on real estate owned.

Fair Value Measurements - Fai63

Fair Value Measurements - Fair Value by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	$ 1,922,894	$ 2,380,563
Held-to-maturity securities	1,441,556	1,637,420
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	1,922,894	2,380,563
Held-to-maturity securities	1,417,599	1,643,216
Carrying Amount | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	450,368	284,049
Carrying Amount | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	101,824	101,952
Carrying Amount | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
FHLB and FRB stock	117,205	107,198
Interest rate contracts	20,895	11,879
Customer accounts	10,600,852	10,631,703
FHLB advances and other borrowings	2,080,000	1,830,000
Carrying Amount | Level 2 | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities	20,895	11,879
Carrying Amount | Level 2 | Commercial loan hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities	3,312	966
Carrying Amount | Level 2 | Long term borrowing hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities	31,347	14,555
Carrying Amount | Level 2 | Agency pass through mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	1,417,599	1,643,216
Carrying Amount | Level 2 | U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	259,351	482,464
Carrying Amount | Level 2 | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	27,670	27,123
Carrying Amount | Level 2 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	461,138	505,800
Carrying Amount | Level 2 | Agency pass through mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	993,041	1,160,518
Carrying Amount | Level 2 | Commercial MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	79,870	102,706
Carrying Amount | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable	9,910,920	9,170,634
FDIC indemnification asset	12,769	16,275
Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	1,922,894	2,380,563
Held-to-maturity securities	1,441,556	1,637,420
Estimated Fair Value | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	450,368	284,049
Estimated Fair Value | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	101,824	101,952
Estimated Fair Value | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
FHLB and FRB stock	117,205	107,198
Interest rate contracts	20,895	11,879
Customer accounts	10,184,321	10,004,290
FHLB advances and other borrowings	2,184,671	1,938,384
Estimated Fair Value | Level 2 | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities	20,895	11,879
Estimated Fair Value | Level 2 | Commercial loan hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities	3,312	966
Estimated Fair Value | Level 2 | Long term borrowing hedge
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities	31,347	14,555
Estimated Fair Value | Level 2 | Agency pass through mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	1,441,556	1,637,420
Estimated Fair Value | Level 2 | U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	259,351	482,464
Estimated Fair Value | Level 2 | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	27,670	27,123
Estimated Fair Value | Level 2 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	461,138	505,800
Estimated Fair Value | Level 2 | Agency pass through mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	993,041	1,160,518
Estimated Fair Value | Level 2 | Commercial MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	79,870	102,706
Estimated Fair Value | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable	10,414,794	9,667,750
FDIC indemnification asset	$ 12,095	$ 15,522

Derivatives and Hedging Activ64

Derivatives and Hedging Activities (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Derivative [Line Items]
Asset derivatives, fair value	$ 20,895	$ 11,879
Liability derivatives, fair value	55,554	27,400
Interest rate swap agreements
Derivative [Line Items]
Customer derivatives program	840,935	439,416
Notional amount	700,000	400,000
Interest rate contract | Other assets
Derivative [Line Items]
Asset derivatives, fair value	20,895	11,879
Interest rate contract | Other liabilities
Derivative [Line Items]
Liability derivatives, fair value	20,895	11,879
Commercial loan hedge
Derivative [Line Items]
Notional amount	54,155	54,815
Commercial loan hedge | Other assets
Derivative [Line Items]
Asset derivatives, fair value	0	0
Commercial loan hedge | Other liabilities
Derivative [Line Items]
Liability derivatives, fair value	3,312	966
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	31,347	$ 14,555
Related Party Loan | Interest rate swap agreements
Derivative [Line Items]
Customer derivatives program	$ 34,432

Interest Receivable (Details)

Interest Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest receivable	$ 37,669	$ 40,429
Interest receivable	$ 37,669	$ 40,429
Average period rate for earning assets	3.58%	3.63%
Loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest receivable	$ 29,858	$ 30,930
Mortgage-backed securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest receivable	5,670	6,695
Investment securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest receivable	$ 2,141	$ 2,804

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 386,819	$ 361,216
Less accumulated depreciation and amortization	(104,868)	(84,969)
Premises and equipment, net	281,951	276,247
Future minimum payments due, current	4,902
Future minimum payments due, two years	3,942
Future minimum payments due, three years	3,422
Future minimum payments due, four years	3,228
Future minimum payments due, five years	2,538
Future minimum payments due, thereafter	13,159
Rental expense	5,300	6,600	$ 6,600
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	109,414	113,347
Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	143,841	147,757
Leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	18,365	10,193
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 115,199	$ 89,919
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, 2016	Sep. 30, 2015
Deposit Liabilities [Line Items]
Checking accounts, .15% and under	$ 2,721,721	$ 2,555,766
Passbook and statement accounts, .10% and under	820,980	700,794
Insured money market accounts, .01% to .15%	2,462,891	2,564,318
Time deposit accounts
Less than 1.00%	3,268,272	3,126,119
1.00% to 1.99%	1,292,612	1,177,356
2.00% to 2.99%	34,376	501,409
3.00% to 3.99%	0	5,156
4.00% and higher	0	785
Total time deposits	4,595,260	4,810,825
Customer accounts	10,600,852	10,631,703
Within 1 year	2,894,900	2,862,313
1 to 2 years	798,309	1,068,792
2 to 3 years	293,058	321,118
Over 3 years	608,993	558,602
Customer accounts greater than $250,000	$ 2,250,622	$ 2,096,690
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, 2016	Sep. 30, 2015	Sep. 30, 2014
Banking and Thrift [Abstract]
Checking accounts	$ 1,491	$ 1,036	$ 1,259
Passbook and statement accounts	734	660	607
Insured money market accounts	3,285	3,631	4,574
Time deposit accounts	47,425	46,273	52,636
Interest expense on customer accounts, gross	52,935	51,600	59,076
Less early withdrawal penalties	(450)	(546)	(552)
Interest expense on customer accounts	$ 52,485	$ 51,054	$ 58,524
Weighted average interest rate at end of year	0.50%	0.48%	0.51%
Weighted daily average interest rate during the year	0.50%	0.48%	0.57%

FHLB Advances and Other Borro69

FHLB Advances and Other Borrowings - FHLB Advances (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Banking and Thrift [Abstract]
Within 1 year	$ 200,000	$ 250,000
1 to 3 years	880,000	750,000
4 to 5 years	700,000	430,000
More than 5 years	300,000	400,000
FHLB advances	$ 2,080,000	$ 1,830,000

FHLB Advances and Other Borro70

FHLB Advances and Other Borrowings - Weighted Average Cost and Amount of Advances (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Federal Home Loan Banks [Abstract]
Weighted average interest rate at end of year	3.15%	3.35%	3.52%
Weighted daily average interest rate during the year	3.22%	3.57%	3.56%
Daily average of FHLB advances during the year	$ 1,992,434	$ 1,848,904	$ 1,955,205
Maximum amount of FHLB advances at any month end	2,080,000	1,930,000	2,205,000
Interest expense during the year (excludes interest rate swap expense)	$ 64,058	$ 64,331	$ 68,307

FHLB Advances and Other Borro71

FHLB Advances and Other Borrowings - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
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%

Income Taxes - Net Deferred Tax

Income Taxes - Net Deferred Tax Asset (Liability) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Deferred tax assets
Loan loss reserves	$ 45,531	$ 43,749
REO reserves	4,018	11,213
Valuation adjustment on available-for-sale securities and cash flow hedges	6,482	0
Asset purchase tax basis difference (net)	0	5,973
Delinquent accrued interest	2,812	3,069
FDIC loss share guarantee receivable	9,598	7,803
Other, net	3,210	3,891
Total deferred tax assets	71,651	75,698
Deferred tax liabilities
Federal Home Loan Bank stock dividends	24,135	24,135
Valuation adjustment on available-for-sale securities and cash flow hedges	0	205
Asset purchase tax basis difference (net)	2,830
Loan origination costs	14,826	13,875
Depreciation	34,936	25,934
Total deferred tax liabilities	76,727	64,149
Net deferred tax asset (liability)	(5,076)
Net deferred tax asset (liability)		11,549
Current tax asset	21,123	2,964
Net tax asset	$ 16,047	$ 14,513

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Effective Income Tax Rate (Details)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Statutory income tax rate	35.00%	35.00%	35.00%
State income tax	1.00%	2.00%	2.00%
Other differences	(2.00%)	(1.00%)	(1.00%)
Effective income tax rate	34.00%	36.00%	36.00%

Income Taxes - Components of In

Income Taxes - Components of Income Taxes (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Federal:
Current									$ 57,173	$ 79,841	$ 70,797
Deferred									21,961	3,244	10,591
Federal									79,134	83,085	81,388
State:
Current									3,600	6,636	4,987
Deferred									1,351	(518)	1,189
State									4,951	6,118	6,176
Total
Current									60,773	86,477	75,784
Deferred									23,312	2,726	11,780
Income taxes	$ 21,115	$ 22,154	$ 21,499	$ 19,317	$ 23,647	$ 21,727	$ 22,458	$ 21,371	$ 84,085	$ 89,203	$ 87,564

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Liability for uncertain tax positions	$ 105	$ 110
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 Own76

401(k) and Employee Stock Ownership Plan (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]
Employee contribution, percentage of annual salary	100.00%
Employee contribution, maximum allowable contribution	$ 53,000
Service period for eligibility (in years)	1 year
Number of hours of service required in 12 months for plan eligibility (in hours)	1000 hours
Employer matching contribution percent	100.00%
Percent of employees' gross pay	4.00%
Term for employees to become fully vested (in years)	6 years
Profit sharing contribution, percent	7.00%
Company contributions to plan	$ 7,600,000	$ 8,700,000	$ 7,314,000

Stock Award Plans - Additional

Stock Award Plans - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be reserved (in shares)	5,000,000
Shares available for issuance (in shares)	3,348,400
Award vesting period (in years)	5 years
Contractual term of award (in years)	10 years
Unrecognized compensation cost for stock options, net of forfeitures	$ 0
Options granted (in shares)	0	0	0
Compensation cost for stock options	$ 89,000	$ 232,000	$ 324,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, nonvested (in shares)	490,363	521,302	515,845	480,904
Fair market value at date of grant at restricted stock	$ 7,845,808
Compensation cost for stock options	$ 3,357,108	$ 3,271,564	$ 3,085,081
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) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted (in shares)	0	0	0
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at September 30, 2015 (in shares)	1,027,374
Granted (in shares)	0
Exercised (in shares)	(438,456)
Forfeited (in shares)	(129,475)
Outstanding at September 30, 2016 (in shares)	459,443	1,027,374
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)	$ 21.64
Options granted, weighted average exercise price (USD per share)	0
Options exercised, weighted average exercise price (USD per share)	21.51
Options forfeited, weighted average exercise price (USD per share)	22.32
Options outstanding, weighted average exercise price at end of period (USD per share)	$ 21.47	$ 21.64
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable	459,443
Options exercisable, weighted average exercise price (USD per share)	$ 21.47
Options outstanding, weighted average remaining contractual term (in years)	2 years	3 years
Options exercisable, weighted average remaining contractual term (in years)	2 years
Options outstanding, aggregate intrinsic value	$ 2,392	$ 1,867
Options exercisable, aggregate intrinsic value	$ 2,392

Stock Award Plans - Other Stock

Stock Award Plans - Other Stock Option Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Compensation cost for stock options	$ 89	$ 232	$ 324
Weighted average grant date fair value (USD per share)	$ 2.73	$ 2.96	$ 2.95
Total intrinsic value of options exercised	$ 1,651	$ 831	$ 1,136
Grant date FV of options exercised	1,422	368	1,962
Cash received from option exercises	9,283	2,069	10,142
Tax benefit realized for option exercises	$ 0	$ 0	$ 159

Stock Award Plans - Nonvested S

Stock Award Plans - Nonvested Stock Options (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost for stock options, net of forfeitures	$ 0
Options Outstanding
Granted (in shares)	0	0	0
Weighted Average Grant Date Fair Value
Granted (USD per share)	$ 2.73	$ 2.96	$ 2.95
Non-Vested Options
Options Outstanding
Outstanding at beginning of period (in shares)	69,287	145,795	287,750
Granted (in shares)	0	0	0
Vested (in shares)	(62,227)	(61,018)	(119,520)
Forfeited (in shares)	(7,060)	(15,490)	(22,435)
Outstanding at end of period (in shares)	0	69,287	145,795
Weighted Average Grant Date Fair Value
Outstanding at beginning of period (USD per share)	$ 3.85	$ 3.87	$ 3.44
Granted (USD per share)	0	0	0
Vested (USD per share)	3.91	3.88	2.88
Forfeited (USD per share)	3.89	3.90	3.63
Outstanding at end of period (USD per share)	$ 0	$ 3.85	$ 3.87

Stock Award Plans - Nonvested R

Stock Award Plans - Nonvested Restricted Stock (Details) - Restricted Stock - $ / shares	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
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 (in shares)	521,302	515,845	480,904
Granted (in shares)	229,450	301,750	300,500
Vested (in shares)	(165,965)	(223,043)	(202,014)
Forfeited (in shares)	(94,424)	(73,250)	(63,545)
Outstanding at end of period (in shares)	490,363	521,302	515,845
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)	$ 16	$ 15.03	$ 14.10	$ 11.52
Granted, weighted average grant date fair value (USD per share)	17.20	14.26	15.43
Vested, weighted average grant date fair value (USD per share)	15.96	13.24	11.68
Forfeited, weighted average grant date fair value (USD per share)	13.64	10.72	8.50
Outstanding, weighted average grant date fair value, end of period (USD per share)	$ 16	$ 15.03	$ 14.10	$ 11.52

Stockholders' Equity - Regulato

Stockholders' Equity - Regulatory Capital Requirements (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier one capital required for capital adequacy to risk weighted assets, conservation buffer	2.50%
The Company
Common Equity Tier 1 risk-based capital ratio:
Tier one common equity capital	$ 1,690,380	$ 1,658,985
Tier one common equity capital to risk weighted assets	17.54%	18.81%
Tier one common equity capital required for capital adequacy to risk weighted assets	4.50%	4.50%
Tier 1 risk-based capital ratio:
Tier one risk based capital	$ 1,690,380	$ 1,658,985
Tier one risk based capital to risk weighted assets	17.54%	18.81%
Tier one risk based capital required for capital adequacy to risk weighted assets	6.00%	6.00%
Total risk-based capital ratio:
Capital	$ 1,807,740	$ 1,769,587
Capital to risk weighted assets	18.76%	20.07%
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Tier 1 leverage ratio:
Tier one leverage capital	$ 1,690,380	$ 1,658,985
Tier one leverage capital to average assets	11.60%	11.71%
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	$ 1,668,828	$ 1,652,569
Tier one common equity capital to risk weighted assets	17.32%	18.73%
Tier one common equity capital required for capital adequacy to risk weighted assets	4.50%	4.50%
Tier one common equity capital required to be well capitalized to risk weighted assets	6.50%	6.50%
Tier 1 risk-based capital ratio:
Tier one risk based capital	$ 1,668,828	$ 1,652,569
Tier one risk based capital to risk weighted assets	17.32%	18.73%
Tier one risk based capital required for capital adequacy to risk weighted assets	6.00%	6.00%
Tier one risk based capital required to be well capitalized to risk weighted assets	8.00%	8.00%
Total risk-based capital ratio:
Capital	$ 1,786,188	$ 1,763,171
Capital to risk weighted assets	18.54%	19.98%
Capital required for capital adequacy to risk weighted assets	8.00%	8.00%
Capital required to be well capitalized to risk weighted assets	10.00%	10.00%
Tier 1 leverage ratio:
Tier one leverage capital	$ 1,668,828	$ 1,652,569
Tier one leverage capital to average assets	11.45%	11.66%
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%
Tier one leverage capital required to be well capitalized to average assets	5.00%	5.00%

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details) - USD ($)	1 Months Ended	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	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%	2.50%
Stock repurchased (in shares)		3,867,563	5,841,204
Additional shares authorized to be repurchased	5,039,310	5,039,310
Warrants issued (in shares)	1,707,456	1,707,456
Warrant exercise price (in dollars per share)	$ 17.57	$ 17.57
Payments for repurchase of warrants	$ 7,718,158	$ 7,744,000	$ 0	$ 0
Warrants repurchased during period (in shares)	892,240
Warrants outstanding (in shares)	808,616	808,616	1,700,856
Weighted Average
Class of Stock [Line Items]
Weighted average cost of repurchased stock (in dollars per share)		$ 22.72	$ 21.70

Stockholders' Equity - Earnings

Stockholders' Equity - Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Basic weighted average number of shares outstanding (in shares)									91,399,038	95,644,639	101,154,030
Diluted weighted average number of shares outstanding, including dilutive stock options (in shares)									91,912,918	96,053,959	101,590,351
Net income	$ 44,224	$ 43,004	$ 41,723	$ 35,098	$ 42,498	$ 39,050	$ 40,361	$ 38,407	$ 164,049	$ 160,316	$ 157,364
Basic earnings per share (in dollars per share)	$ 0.49	$ 0.47	$ 0.45	$ 0.38	$ 0.46	$ 0.41	$ 0.42	$ 0.39	$ 1.79	$ 1.68	$ 1.56
Diluted earnings per share (in dollars per share)	$ 0.49	$ 0.47	$ 0.45	$ 0.38	$ 0.45	$ 0.41	$ 0.42	$ 0.39	$ 1.78	$ 1.67	$ 1.55
Warrant
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average call options and warrants (in shares)									440,366	340,016	352,171
Equity Option
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average call options and warrants (in shares)									73,514	69,304	84,150
Retained Earnings
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income									$ 164,049	$ 160,316	$ 157,364

Financial Information - Washi85

Financial Information - Washington Federal, INC. - Statement of Financial Condition (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Assets
Other assets	$ 199,271	$ 188,523
Total assets	14,888,063	14,568,324
Liabilities
Total liabilities	12,912,332	12,612,645
Stockholders’ equity
Total stockholders’ equity	1,975,731	1,955,679	$ 1,973,283	$ 1,937,635
Total liabilities and stockholders’ equity	14,888,063	14,568,324
Parent Company
Assets
Cash	24,300	7,628
Other assets	15	0
Investment in subsidiary	1,954,179	1,949,262
Total assets	1,978,494	1,956,890
Liabilities
Other liabilities	2,763	1,211
Total liabilities	2,763	1,211
Stockholders’ equity
Total stockholders’ equity	1,975,731	1,955,679
Total liabilities and stockholders’ equity	$ 1,978,494	$ 1,956,890

Financial Information - Washi86

Financial Information - Washington Federal, INC. - Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Income
Total Income	$ 132,872	$ 133,735	$ 135,063	$ 135,124	$ 135,339	$ 129,300	$ 132,630	$ 132,741	$ 536,793	$ 530,553	$ 533,697
Expense
Income before income taxes	65,339	65,158	63,222	54,415	66,145	60,777	62,819	59,778	248,134	249,519	244,928
Income tax benefit (expense)	(21,115)	(22,154)	(21,499)	(19,317)	(23,647)	(21,727)	(22,458)	(21,371)	(84,085)	(89,203)	(87,564)
NET INCOME	$ 44,224	$ 43,004	$ 41,723	$ 35,098	$ 42,498	$ 39,050	$ 40,361	$ 38,407	164,049	160,316	157,364
Parent Company
Income
Dividends from subsidiary									148,000	175,000	70,000
Total Income									148,000	175,000	70,000
Expense
Miscellaneous									435	439	485
Total expense									435	439	485
Net income (loss) before equity in undistributed net income (loss) of subsidiary									147,565	174,561	69,515
Equity in undistributed net income of subsidiary									16,336	(14,402)	87,675
Income before income taxes									163,901	160,159	157,190
Income tax benefit (expense)									148	157	174
NET INCOME									$ 164,049	$ 160,316	$ 157,364

Financial Information - Washi87

Financial Information - Washington Federal, INC. - Statements of Cash Flows (Details) - USD ($)	1 Months Ended	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Cash Flows From Operating Activities
Net income		$ 44,224,000	$ 43,004,000	$ 41,723,000	$ 35,098,000	$ 42,498,000	$ 39,050,000	$ 40,361,000	$ 38,407,000	$ 164,049,000	$ 160,316,000	$ 157,364,000
Adjustments to reconcile net income to net cash provided by operating activities:
Decrease (increase) in other assets										(14,204,000)	(29,220,000)	(17,799,000)
Net cash provided (used) by operating activities										221,721,000	142,871,000	173,715,000
Cash Flows From Financing Activities
Proceeds from exercise of common stock options and related tax benefit										9,283,000	2,070,000	10,252,000
Repurchase of warrants	$ (7,718,158)									(7,744,000)	0	0
Treasury stock purchased										(87,850,000)	(126,728,000)	(104,291,000)
Dividends paid on common stock										(49,926,000)	(51,111,000)	(42,065,000)
Net cash provided (used) by financing activities										75,662,000	(350,176,000)	(376,457,000)
Increase (decrease) in cash and cash equivalents										166,319,000	(497,794,000)	578,280,000
Cash and cash equivalents at beginning of year					284,049,000				781,843,000	284,049,000	781,843,000	203,563,000
Cash and cash equivalents at end of year	450,368,000	450,368,000				284,049,000				450,368,000	284,049,000	781,843,000
Parent Company
Cash Flows From Operating Activities
Net income										164,049,000	160,316,000	157,364,000
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income of subsidiaries										(12,677,000)	32,375,000	(87,943,000)
Decrease (increase) in other assets										(15,000)	0	1,000
Increase in other liabilities										1,552,000	(13,189,000)	4,152,000
Net cash provided (used) by operating activities										152,909,000	179,502,000	73,574,000
Cash Flows From Financing Activities
Proceeds from exercise of common stock options and related tax benefit										9,283,000	2,070,000	10,252,000
Treasury stock purchased										(87,850,000)	(126,728,000)	(104,291,000)
Dividends paid on common stock										(49,926,000)	(51,111,000)	(42,065,000)
Net cash provided (used) by financing activities										(136,237,000)	(175,769,000)	(136,104,000)
Increase (decrease) in cash and cash equivalents										16,672,000	3,733,000	(62,530,000)
Cash and cash equivalents at beginning of year					$ 7,628,000				$ 3,895,000	7,628,000	3,895,000	66,425,000
Cash and cash equivalents at end of year	$ 24,300,000	$ 24,300,000				$ 7,628,000				$ 24,300,000	$ 7,628,000	$ 3,895,000

Selected Quarterly Financial 88

Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Quarterly Financial Information Disclosure [Abstract]
Total Income	$ 132,872	$ 133,735	$ 135,063	$ 135,124	$ 135,339	$ 129,300	$ 132,630	$ 132,741	$ 536,793	$ 530,553	$ 533,697
Interest expense	30,056	29,495	28,738	28,255	28,486	28,735	28,750	30,558	116,544	117,072	128,077
Net interest income	102,816	104,240	106,325	106,869	106,853	100,565	103,880	102,183	420,249	413,481	405,620
Provision (release) for loan losses	(3,100)	(1,650)	(1,500)	0	219	(1,932)	(3,949)	(5,500)	(6,250)	(11,162)	(15,401)
Other operating income (including REO gain (loss), net)	14,830	15,573	14,623	12,055	16,719	14,999	12,314	5,695
Other operating expense	55,407	56,305	59,226	64,509	57,208	56,719	57,324	53,600	235,447	224,851	204,009
Income before income taxes	65,339	65,158	63,222	54,415	66,145	60,777	62,819	59,778	248,134	249,519	244,928
Income tax expense	21,115	22,154	21,499	19,317	23,647	21,727	22,458	21,371	84,085	89,203	87,564
NET INCOME	$ 44,224	$ 43,004	$ 41,723	$ 35,098	$ 42,498	$ 39,050	$ 40,361	$ 38,407	$ 164,049	$ 160,316	$ 157,364
Basic earnings per share (in dollars per share)	$ 0.49	$ 0.47	$ 0.45	$ 0.38	$ 0.46	$ 0.41	$ 0.42	$ 0.39	$ 1.79	$ 1.68	$ 1.56
Diluted earnings per share (in dollars per share)	0.49	0.47	0.45	0.38	0.45	0.41	0.42	0.39	1.78	1.67	1.55
Cash dividends per share (in dollars per share)	$ 0.14	$ 0.14	$ 0.14	$ 0.13	$ 0.13	$ 0.13	$ 0.13	$ 0.15	$ 0.55	$ 0.54	$ 0.41