Washington Federal (WAFD) 10-Q 7 Aug 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Jun. 30, 2015	Aug. 06, 2015
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Entity Registrant Name	WASHINGTON FEDERAL INC
Entity Central Index Key	936,528
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		93,982,148

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
ASSETS
Cash and cash equivalents	$ 349,550	$ 781,843
Available-for-sale securities, at fair value	2,624,374	3,049,442
Held-to-maturity securities, at amortized cost	1,586,514	1,548,265
Loans receivable, net	8,645,609	8,148,322
Covered loans, net	77,311	176,476
Interest receivable	39,550	52,037
Premises and equipment, net	267,835	257,543
Real estate held for sale	55,491	55,072
Real estate held for investment	4,336	4,808
Covered real estate held for sale	4,434	24,082
FDIC indemnification asset	18,783	36,860
FHLB and FRB stock	103,189	158,839
Bank owned life insurance	101,720	0
Intangible assets, net	300,109	302,909
Federal and state income tax assets, net	11,286	16,515
Other assets	180,405	143,028
Assets	14,370,496	14,756,041
Customer accounts
Transaction deposit accounts	5,696,536	5,490,687
Time deposit accounts	4,881,849	5,226,241
Customer accounts	10,578,385	10,716,928
FHLB advances	1,730,000	1,930,000
Advance payments by borrowers for taxes and insurance	30,656	29,004
Accrued expenses and other liabilities	72,334	106,826
Liabilities	12,411,375	12,782,758
Stockholders’ equity
Common stock, $1.00 par value, 300,000,000 shares authorized; 133,688,179 and 133,322,909 shares issued; 93,982,148 and 98,404,705 shares outstanding	133,688	133,323
Paid-in capital	1,643,243	1,638,211
Accumulated other comprehensive income, net of taxes	10,977	20,708
Treasury stock, at cost; 39,706,031 and 34,918,204 shares	(628,157)	(525,108)
Retained earnings	799,370	706,149
Stockholders' Equity Attributable to Parent	1,959,121	1,973,283
Liabilities and Equity	$ 14,370,496	$ 14,756,041

CONSOLIDATED STATEMENTS OF FIN3

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (UNAUDITED) (Parentheticals) - $ / shares	Jun. 30, 2015	Sep. 30, 2014
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	133,688,179	133,322,909
Common stock, shares outstanding (in shares)	93,982,148	98,404,705
Treasury stock, shares (in shares)	39,706,031	34,918,204

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
INTEREST INCOME
Loans and covered assets	$ 107,250	$ 108,089	$ 324,817	$ 321,650
Mortgage-backed securities	16,995	20,507	54,313	60,947
Investment securities and cash equivalents	5,055	6,415	16,084	16,023
Interest Income	129,300	135,011	395,214	398,620
INTEREST EXPENSE
Customer accounts	12,485	14,238	38,504	44,517
FHLB advances and other borrowings	16,250	17,494	50,082	51,877
Interest Expense	28,735	31,732	88,586	96,394
Net interest income	100,565	103,279	306,628	302,226
Reversal of provision for loan losses	(1,932)	(3,000)	(11,381)	(11,936)
Net interest income after reversal of provision for loan losses	102,497	106,279	318,009	314,162
OTHER INCOME
Gain on sale of investments	9,639	0	9,639	0
Prepayment penalty on long-term debt	(7,941)	0	(10,554)	0
Loan fee income	1,915	2,297	6,028	5,668
Deposit fee income	5,156	4,036	16,538	9,120
Other income	3,042	1,739	6,380	5,774
OTHER INCOME	11,811	8,072	28,031	20,562
OTHER EXPENSE
Compensation and benefits	29,824	28,946	89,453	81,908
Occupancy	8,492	7,468	24,866	21,864
FDIC insurance premiums	2,377	2,978	5,431	8,679
Information technology	3,783	3,505	11,695	10,365
Product delivery	6,175	4,577	17,222	9,961
Other expense	6,068	5,819	18,975	16,694
Noninterest Expense	56,719	53,293	167,642	149,471
Gain (loss) on real estate acquired through foreclosure, net	3,188	(2,056)	4,976	(3,454)
Income before income taxes	60,777	59,002	183,374	181,799
Income tax provision	21,727	21,092	65,556	64,996
NET INCOME	$ 39,050	$ 37,910	$ 117,818	$ 116,803
PER SHARE DATA
Basic earnings (in dollars per share)	$ 0.41	$ 0.38	$ 1.22	$ 1.15
Diluted earnings (in dollars per share)	0.41	0.37	1.22	1.14
Dividends paid on common stock (in dollars per share)	$ 0.13	$ 0.1	$ 0.41	$ 0.30
Basic weighted average number of shares outstanding (in shares)	94,466,524	100,979,219	96,335,777	101,777,112
Diluted weighted average number of shares outstanding, including dilutive stock options (in shares)	94,904,262	101,393,936	96,726,085	102,234,350

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 39,050	$ 37,910	$ 117,818	$ 116,803
Other comprehensive income (loss) net of tax:
Net unrealized gain (loss) on available-for-sale securities	(35,001)	22,026	(21,378)	28,527
Reclassification adjustment of net gain (loss) from sale of available-for-sale securities included in net income	9,639	0	9,639	0
Related tax expense (benefit)	9,320	(8,095)	4,314	0
Other comprehensive income (loss) for available for sale securities, net of tax	(16,042)	13,931	(7,425)	28,527
Net unrealized gain (loss) on long-term borrowing hedge	5,587	0	(3,646)	0
Related tax benefit (expense)	(2,053)	0	1,340	(10,484)
Other comprehensive income (loss) on long term borrowing hedge, net of tax	3,534	0	(2,306)	(10,484)
Other comprehensive income (loss) net of tax	(12,508)	13,931	(9,731)	18,043
Comprehensive income	$ 26,542	$ 51,841	$ 108,087	$ 134,846

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income	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	116,803			116,803
Other comprehensive income (loss)	18,043				18,043
Dividends on common stock	(31,393)			(31,393)
Compensation expense related to common stock options	900		900
Proceeds from exercise of common stock options	10,358	759	9,599
Restricted stock expense	2,520	0	2,520
Treasury stock acquired	(64,231)					(64,231)
Balance, end of period at Jun. 30, 2014	1,990,635	133,332	1,638,070	679,860	24,421	(485,048)
Balance, beginning 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	117,818			117,818
Other comprehensive income (loss)	(9,731)				(9,731)
Dividends on common stock	(24,597)			(24,597)
Compensation expense related to common stock options	900		900
Proceeds from exercise of common stock options	1,676	106	1,570
Restricted stock expense	2,821	259	2,562
Treasury stock acquired	(103,049)					(103,049)
Balance, end of period at Jun. 30, 2015	$ 1,959,121	$ 133,688	$ 1,643,243	$ 799,370	$ 10,977	$ (628,157)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 117,818,000	$ 116,803,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	19,075,000	8,467,000
Cash received from (paid to) FDIC under loss share	(714,000)	949,000
Stock option compensation expense	900,000	900,000
Reversal of provision for loan losses	(11,381,000)	(11,936,000)
(Gain) loss on investment securities and real estate held for sale	(25,817,000)	598,000
Prepayment penalty from repayment of borrowings	10,554,000	0
Decrease (increase) in accrued interest receivable	12,487,000	(2,174,000)
Decrease (increase) in FDIC loss share receivable	1,795,000	(2,029,000)
Decrease in federal and state income tax	10,883,000	8,258,000
Increase in cash surrender value in bank owned life insurance	(1,720,000)	0
Increase in other assets	(37,376,000)	(14,514,000)
Decrease in accrued expenses and other liabilities	(23,738,000)	(10,487,000)
Net cash provided by operating activities	72,766,000	94,835,000
CASH FLOWS FROM INVESTING ACTIVITIES
Net loan originations	(204,527,000)	(329,076,000)
Loans purchased	(183,406,000)	0
FHLB & FRB stock redemption	55,649,000	9,952,000
Available-for-sale securities purchased	(329,490,000)	(1,080,476,000)
Principal payments and maturities of available-for-sale securities	502,561,000	363,103,000
Proceeds on available-for-sale securities sold	244,749,000	0
Held-to-maturity securities purchased	(249,382,000)	0
Principal payments and maturities of held-to-maturity securities	207,954,000	68,981,000
Net cash received from acquisitions	0	1,776,660,000
Proceeds from sales of real estate owned and held for investment	45,603,000	49,550,000
Proceeds from sales of covered REO	17,474,000	17,216,000
Purchase of bank owned life insurance	(100,000,000)	0
Premises and equipment purchased and REO improvements	(24,582,000)	(35,647,000)
Net cash provided by (used in) investing activities	(17,397,000)	840,263,000
CASH FLOWS FROM FINANCING ACTIVITIES
Net decrease in customer accounts	(138,390,000)	(178,161,000)
Repayments of borrowings	(210,554,000)	0
Proceeds from exercise of common stock options and related tax benefit	1,676,000	10,358,000
Dividends paid on common stock	(38,997,000)	(31,393,000)
Treasury stock purchased	(103,049,000)	(64,231,000)
Increase (decrease) in advance payments by borrowers for taxes and insurance	1,652,000	(13,930,000)
Net cash used in financing activities	(487,662,000)	(277,357,000)
Increase (decrease) in cash and cash equivalents	(432,293,000)	657,741,000
Cash and cash equivalents at beginning of period	781,843,000	203,563,000
Cash and cash equivalents at end of period	349,550,000	861,304,000
Non-cash investing activities
Non-covered real estate acquired through foreclosure	23,940,000	32,818,000
Covered real estate acquired through foreclosure	1,892,000	6,163,000
Cash paid during the period for
Interest	88,511,000	97,485,000
Income taxes	48,096,000	54,072,000
The following summarizes the non-cash activities related to acquisitions
Fair value of assets and intangibles acquired, including goodwill	0	80,384,000
Fair value of liabilities assumed	0	(1,857,044,000)
Net fair value of assets (liabilities)	$ 0	$ (1,776,660,000)

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies 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 federally-insured national bank subsidiary. The Bank is principally engaged in the business of attracting deposits from the general public and investing these funds, together with borrowings and other funds, in one-to-four family residential real estate loans, multi-family real estate loans and commercial loans. 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. Basis of Presentation - The consolidated unaudited interim financial statements included in this report have been prepared by Washington Federal. All intercompany transactions and accounts have been eliminated in consolidation. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect amounts reported in the financial statements. Actual results could differ from these estimates. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) necessary for a fair presentation are reflected in the interim financial statements. The September 30, 2014 Consolidated Statement of Financial Condition was derived from audited financial statements. The information included in this Form 10-Q should be read in conjunction with the financial statements and related notes in the Company's 2014 Annual Report on Form 10-K (“ 2014 Form 10-K”) as filed with the SEC. Interim results are not necessarily indicative of results for a full year. Summary of Significant Accounting Policies - The significant accounting policies used in preparation of the Company's consolidated financial statements are disclosed in its 2014 Form10-K. Other than the reclassifications discussed below, there have not been any material changes in our significant accounting policies compared to those contained in our 2014 Form 10-K disclosure for the year ended September 30, 2014 . Off-Balance-Sheet Credit Exposures – The only material off-balance-sheet credit exposures are loans in process and unused lines of credit, which had a combined balance at June 30, 2015 and September 30, 2014 , of $686,134,000 and $583,838,000 , respectively. The Company estimates losses on off-balance-sheet credit exposures by allocating a loss percentage derived from historical loss factors for each asset class. Reclassifications - Reclassification of Other Expenses into Product Delivery and Information Technology line items have been made to the financial statements for the quarters prior to September 30, 2014 to conform to current year classifications.

Acquisitions

Acquisitions	9 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Acquisitions	Acquisitions There were no acquisitions completed during the nine months ended June 30, 2015 . During the 2014 fiscal year, the Bank acquired seventy-four branches from Bank of America, National Association. Effective as of the close of business on October 31, 2013, the Bank completed the acquisition of eleven branches that are located in New Mexico. Effective as of the close of business on December 6, 2013, the Bank completed the acquisition of another forty branches that are located in Washington, Oregon, and Idaho. Effective as of the close of business on May 2, 2014, the Bank completed the acquisition of another twenty-three branches that are located in Arizona and Nevada. Management believes that these transactions represent a significant enhancement of our branch network. These transactions have brought new customers to the Bank and improved the deposit mix and reduced overall funding costs. The combined acquisitions provided $1,853,798,000 in deposit accounts, $12,881,000 in loans, and $25,097,000 in branch properties. The Bank paid a 1.99% premium on the total deposits and received $1,776,660,000 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 $11,040,000 in core deposit intangible and $31,225,000 in goodwill related to these transactions. The operating results include the operating results produced by the first eleven branches for the period from November 1, 2013 to June 30, 2015 , for the additional forty branches from December 7, 2013 to June 30, 2015 , and for the most recent twenty-three branches from May 3, 2014 to June 30, 2015 . The table below displays the adjusted fair value as of the acquisition date for each major class of assets acquired and liabilities assumed during fiscal year 2014 : Adjusted Fair Value Recorded by Washington Federal (In thousands) Assets: Cash $ 1,776,660 Loans receivable, net 12,881 Property and equipment, net 25,097 Core deposit intangible 11,040 Goodwill 31,225 Other assets 70 Total Assets 1,856,973 Liabilities: Customer accounts 1,853,798 Other liabilities 3,175 Total Liabilities 1,856,973 Net assets acquired $ —

Dividends

Dividends	9 Months Ended
	Jun. 30, 2015
Dividends [Abstract]
Dividends	Dividends On May 29, 2015, the Company paid its 129th consecutive quarterly cash dividend on common stock. Dividends per share were $ .13 and $ .10 for the quarters ended June 30, 2015 and 2014 , respectively. The Company also announced the authorization of an additional 5 million shares that may be repurchased under Washington Federal's share repurchase program in May 2015. On July 27, 2015, the Company announced its 130th consecutive quarterly cash dividend on common stock of $0.13 per share. The current dividend will be paid on August 21, 2015, to common shareholders of record on August 7, 2015. For the nine months ended June 30, 2015 , the Company has repurchased 4.8 million shares or 4.9 percent of the shares that were outstanding at the beginning of the year at an average price of $21.52 .

Loans Receivable (excluding Cov

Loans Receivable (excluding Covered Loans)	9 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Loans Receivable (excluding Covered Loans)	Loans Receivable (excluding Covered Loans) June 30, 2015 September 30, 2014 (In thousands) Non-acquired loans Single-family residential $ 5,549,746 60.1 % $ 5,560,203 64.1 % Construction - speculative 181,668 2.0 140,060 1.6 Construction - custom 375,425 4.1 385,824 4.5 Land - acquisition & development 87,382 0.9 77,832 0.9 Land - consumer lot loans 102,495 1.1 108,623 1.3 Multi-family 1,089,682 11.8 917,286 10.6 Commercial real estate 808,539 8.7 591,336 6.9 Commercial & industrial 451,478 4.9 379,226 4.4 HELOC 122,870 1.3 116,042 1.4 Consumer 205,932 2.2 132,590 1.5 Total non-acquired loans 8,975,217 97.1 8,409,022 97.2 Non-impaired acquired loans Single-family residential 12,895 0.1 11,716 0.1 Construction - speculative — — — — Construction - custom — — — — Land - acquisition & development 1,028 — 905 — Land - consumer lot loans 2,472 — 2,507 — Multi-family 3,692 — 2,999 — Commercial real estate 102,089 1.1 97,898 1.1 Commercial & industrial 57,614 0.6 51,386 0.6 HELOC 6,414 0.1 8,274 0.1 Consumer 2,916 — 5,670 0.1 Total non-impaired acquired loans 189,120 1.9 181,355 2.0 Credit-impaired acquired loans Single-family residential 6,288 0.1 325 — Construction - speculative — — — — Land - acquisition & development 1,842 — 1,622 — Land - consumer lot loans 496 — — — Multi-family — — — — Commercial real estate 71,196 0.8 63,723 0.7 Commercial & industrial 3,881 — 3,476 — HELOC 8,553 0.1 10,139 0.1 Consumer 108 — 55 — Total credit-impaired acquired loans 92,364 1.0 79,340 0.8 Total loans Single-family residential 5,568,929 60.3 5,572,244 64.2 Construction - speculative 181,668 2.0 140,060 1.6 Construction - custom 375,425 4.1 385,824 4.5 Land - acquisition & development 90,252 0.9 80,359 0.9 Land - consumer lot loans 105,463 1.1 111,130 1.3 Multi-family 1,093,374 11.8 920,285 10.6 Commercial real estate 981,824 10.6 752,957 8.7 Commercial & industrial 512,973 5.5 434,088 5.0 HELOC 137,837 1.5 134,455 1.6 Consumer 208,956 2.2 138,315 1.6 Total Loans 9,256,701 100 % 8,669,717 100 % Less: Allowance for probable losses 105,611 112,347 Loans in process 438,941 346,172 Discount on acquired loans 28,399 25,391 Deferred net origination fees 38,141 37,485 611,092 521,395 $ 8,645,609 $ 8,148,322 Changes in the carrying amount and accretable yield for acquired non-impaired and credit-impaired loans (excluding covered loans) for the nine months ended June 30, 2015 and June 30, 2014 were as follows: June 30, 2015 Acquired Impaired Acquired Non-impaired Accretable Yield Net Carrying Amount of Loans Accretable Yield Carrying Amount of Loans (In thousands) Balance as of beginning of period $ 32,591 $ 57,771 $ 4,254 $ 177,440 Transfer from covered loans (2) 23,167 15,866 1,482 33,649 Additions — — 346 — Accretion (11,501 ) 11,501 (2,427 ) 2,427 Transfers to REO — (458 ) — — Payments received, net — (18,140 ) — (27,556 ) Balance as of end of period $ 44,257 $ 66,540 $ 3,655 $ 185,960 (1) reclassification due to improvements in expected cash flows of the underlying loans (2) reclassification from covered to non-covered due to expiration of loss share agreement June 30, 2014 Acquired Impaired Acquired Non-impaired Accretable Yield Net Carrying Amount of Loans Accretable Yield Carrying Amount of Loans (In thousands) Balance as of beginning of period $ 37,236 $ 69,718 $ 4,977 $ 245,373 Reclassification from nonaccretable balance, net (1) 7,300 — — — Accretion (8,884 ) 8,884 (606 ) 606 Transfers to REO — (1,188 ) — (4,710 ) Payments received, net — (17,616 ) — (48,988 ) Balance as of end of period $ 35,652 $ 59,798 $ 4,371 $ 192,281 (1) reclassification due to improvements in expected cash flows of the underlying loans. The following table sets forth information regarding non-accrual loans (excluding covered loans) held by the Company as of the dates indicated: June 30, 2015 September 30, 2014 (In thousands) Non-accrual loans: Single-family residential $ 56,638 86.7 % $ 74,067 84.8 % Construction - speculative 762 1.2 1,477 1.7 Construction - custom 355 0.5 — — Land - acquisition & development — — 811 0.9 Land - consumer lot loans 1,308 2.0 2,637 3.0 Multi-family 786 1.2 1,742 2.0 Commercial real estate 2,852 4.4 5,106 5.8 Commercial & industrial 1,205 1.8 7 — HELOC 889 1.4 795 0.9 Consumer 513 0.8 789 0.9 Total non-accrual loans $ 65,308 100 % $ 87,431 100 % The Company recognized interest income on nonaccrual loans of approximately $5,272,000 in the nine months ended June 30, 2015 . Had these loans performed according to their original contract terms, the Company would have recognized interest income of approximately $2,421,000 for the nine months ended June 30, 2015 . The recognized interest income may include more than nine months of interest for some of the loans that were brought current. In addition to the nonaccrual loans reflected in the above table, the Company had $94,346,000 of loans that were less than 90 days delinquent at June 30, 2015 but which it had classified as substandard for one or more reasons. The following tables provide an analysis of the age of loans (net of LIP and excluding covered loans) in past due status as of June 30, 2015 and September 30, 2014 , respectively. June 30, 2015 Amount of Loans Days Delinquent Based on $ Amount of Loans % based on $ Type of Loan Net of LIP & Chg.-Offs Current 30 60 90 Total (In thousands) Non-acquired loans Single-family residential $ 5,546,941 $ 5,473,728 $ 14,525 $ 8,585 $ 50,103 $ 73,213 1.32 % Construction - speculative 117,711 117,711 — — — — — Construction - custom 204,914 204,140 310 109 355 774 0.38 Land - acquisition & development 72,856 72,429 427 — — 427 0.59 Land - consumer lot loans 102,436 99,717 595 85 2,039 2,719 2.65 Multi-family 1,013,745 1,012,704 — 421 620 1,041 0.10 Commercial real estate 697,960 696,678 421 57 804 1,282 0.18 Commercial & industrial 451,473 451,404 69 — — 69 0.02 HELOC 122,874 121,836 401 62 575 1,038 0.84 Consumer 205,950 205,259 519 172 — 691 0.34 Total non-acquired loans 8,536,860 8,455,606 17,267 9,491 54,496 81,254 0.95 Non-impaired acquired loans Single-family residential 12,895 12,872 — — 23 23 0.18 Land - acquisition & development 1,028 1,028 — — — — — Land - consumer lot loans 2,472 2,339 — 16 117 133 5.38 Multi-family 3,692 3,692 — — — — — Commercial real estate 101,542 101,369 — — 173 173 0.17 Commercial & industrial 57,612 57,574 — — 38 38 0.07 HELOC 6,414 5,973 224 217 — 441 6.88 Consumer 2,897 2,491 48 — 358 406 14.01 Total non-impaired acquired loans 188,552 187,338 272 233 709 1,214 0.64 Credit-impaired acquired loans Single-family residential 6,284 6,284 — — — — — Land - acquisition & development 1,842 771 203 — 868 1,071 58.14 Land - consumer lot loans 495 495 — — — — NM Commercial real estate 71,189 69,448 608 — 1,133 1,741 2.45 Commercial & industrial 3,881 3,058 — — 823 823 21.21 HELOC 8,549 8,236 — — 313 313 3.66 Consumer 108 108 — — — — — Total credit-impaired acquired loans 92,348 88,400 811 — 3,137 3,948 4.28 Total Loans $ 8,817,760 $ 8,731,344 $ 18,350 $ 9,724 $ 58,342 $ 86,416 0.98 % September 30, 2014 Amount of Loans Days Delinquent Based on $ Amount of Loans % based on $ Type of Loan Net of LIP & Chg.-Offs Current 30 60 90 Total (In thousands) Non-acquired loans Single-family residential $ 5,557,753 $ 5,467,239 $ 15,926 $ 9,139 $ 65,449 $ 90,514 1.63 % Construction - speculative 87,035 87,035 — — — — — Construction - custom 192,098 191,262 836 — — 836 0.44 Land - acquisition & development 68,066 67,911 155 — — 155 0.23 Land - consumer lot loans 108,589 104,571 1,246 304 2,468 4,018 3.70 Multi-family 892,196 891,372 205 16 603 824 0.09 Commercial real estate 529,453 513,409 67 15,118 859 16,044 3.03 Commercial & industrial 379,226 377,848 53 1,318 7 1,378 0.36 HELOC 116,262 115,262 335 292 373 1,000 0.86 Consumer 132,686 131,642 654 262 128 1,044 0.79 Total non-acquired loans 8,063,364 7,947,551 19,477 26,449 69,887 115,813 1.44 Non-impaired acquired loans Single-family residential 11,716 11,693 — — 23 23 0.20 Land - acquisition & development 905 905 — — — — — Land - consumer lot loans 2,502 2,132 — 370 — 370 14.79 Multi-family 2,999 2,999 — — — — — Commercial real estate 97,715 96,948 104 — 663 767 0.78 Commercial & industrial 51,329 51,229 — 100 — 100 0.19 HELOC 8,056 8,056 — — — — — Consumer 5,670 4,983 22 4 661 687 12.12 Total non-impaired acquired loans 180,892 178,945 126 474 1,347 1,947 1.08 Credit-impaired acquired loans Single-family residential 325 325 — — — — — Land - acquisition & development 1,581 1,581 — — — — — Commercial real estate 63,713 61,713 152 909 939 2,000 3.14 Commercial & industrial 3,477 3,470 7 — — 7 0.20 HELOC 10,138 9,641 — 75 422 497 4.90 Consumer 54 54 — — — — — Total credit-impaired acquired loans 79,288 76,784 159 984 1,361 2,504 3.16 Total Loans $ 8,323,544 $ 8,203,280 $ 19,762 $ 27,907 $ 72,595 $ 120,264 1.44 % Most loans restructured in troubled debt restructurings ("TDRs") are accruing and performing loans where the borrower has proactively approached the Company about modification due to temporary financial difficulties. As of June 30, 2015 , 95.9% of the Bank's $321,481,000 in TDRs were classified as performing. 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 between 100 to 200 basis points 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 June 30, 2015 , single-family residential loans comprised 85.7% of TDRs. 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 tables provide information related to loans that were restructured during the periods indicated: Quarter Ended June 30, 2015 2014 Pre-Modification Post-Modification Pre-Modification Post-Modification Outstanding Outstanding Outstanding Outstanding Number of Recorded Recorded Number of Recorded Recorded Contracts Investment Investment Contracts Investment Investment (In thousands) (In thousands) Troubled Debt Restructurings: Single-family residential 8 $ 1,611 $ 1,611 48 $ 10,693 $ 10,693 Land - acquisition & development — — — 3 756 756 Land - consumer lot loans 2 203 203 5 573 573 Commercial real estate — — — 2 1,398 1,398 10 $ 1,814 $ 1,814 58 $ 13,420 $ 13,420 Nine Months Ended June 30, 2015 2014 Pre-Modification Post-Modification Pre-Modification Post-Modification Outstanding Outstanding Outstanding Outstanding Number of Recorded Recorded Number of Recorded Recorded Contracts Investment Investment Contracts Investment Investment (In thousands) (In thousands) Troubled Debt Restructurings: Single-family residential 57 13,875 13,875 199 45,132 45,132 Construction - speculative 2 718 718 — — — Construction - custom 2 532 532 — — — Land - consumer lot loans 6 923 923 10 1,746 1,746 Multi-family — — — 2 1,201 1,201 Commercial real estate 3 3,175 3,175 3 2,197 2,197 HELOC — — — 1 261 261 Consumer 1 85 85 3 207 207 71 $ 19,308 $ 19,308 221 $ 51,500 $ 51,500 The following tables provide information on restructured loans for which a payment default occurred during the periods indicated that had been modified as a TDR within 12 months or less of the payment default: Quarter Ended June 30, 2015 2014 Number of Recorded Number of Recorded Contracts Investment Contracts Investment (In thousands) (In thousands) Troubled Debt Restructurings That Subsequently Defaulted: Single-family residential 9 $ 1,594 17 $ 3,088 Land - consumer lot loans 2 301 1 69 Consumer — — 1 170 11 $ 1,895 19 $ 3,327 Nine Months Ended June 30, 2015 2014 Number of Recorded Number of Recorded Contracts Investment Contracts Investment (In thousands) (In thousands) Troubled Debt Restructurings That Subsequently Defaulted: Single-family residential 19 $ 3,329 42 $ 9,206 Land - consumer lot loans 7 991 4 445 Consumer — — 1 170 26 $ 4,320 47 $ 9,821

Allowance for Losses on Loans

Allowance for Losses on Loans	9 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Allowance for Losses on Loans	Allowance for Losses on Loans The following table summarizes the activity in the allowance for loan losses (excluding certain acquired and covered loans) for the three and nine months ended June 30, 2015 and 2014 : Three Months Ended June 30, 2015 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 54,762 $ (1,698 ) $ 3,878 $ (4,938 ) $ 52,004 Construction - speculative 5,445 — — 488 5,933 Construction - custom 968 — — 17 985 Land - acquisition & development 7,405 — 1 (1,634 ) 5,772 Land - consumer lot loans 3,035 (276 ) 187 53 2,999 Multi-family 4,673 — — 362 5,035 Commercial real estate 6,734 (1,592 ) 230 1,896 7,268 Commercial & industrial 21,146 (2,106 ) 896 1,726 21,662 HELOC 850 (26 ) 1 39 864 Consumer 3,305 (853 ) 1,045 (408 ) 3,089 $ 108,323 $ (6,551 ) $ 6,238 $ (2,399 ) $ 105,611 Three Months Ended June 30, 2014 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 63,348 $ (2,530 ) $ 4,717 $ (3,175 ) $ 62,360 Construction - speculative 6,773 — $ 2 (388 ) 6,387 Construction - custom 1,599 — — 79 1,678 Land - acquisition & development 6,027 — 85 843 6,955 Land - consumer lot loans 2,974 (86 ) — (26 ) 2,862 Multi-family 4,187 — — (46 ) 4,141 Commercial real estate 5,924 (32 ) 24 773 6,689 Commercial & industrial 20,403 (38 ) 4 (1,673 ) 18,696 HELOC 975 (18 ) — 58 1,015 Consumer 2,721 (696 ) 787 555 3,367 $ 114,931 $ (3,400 ) $ 5,619 $ (3,000 ) $ 114,150 Nine Months Ended June 30, 2015 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 62,763 $ (4,801 ) $ 10,553 $ (16,511 ) $ 52,004 Construction - speculative 6,742 (388 ) $ 75 (496 ) 5,933 Construction - custom 1,695 — — (710 ) 985 Land - acquisition & development 5,592 (38 ) 206 12 5,772 Land - consumer lot loans 3,077 (363 ) 221 64 2,999 Multi-family 4,248 — 220 567 5,035 Commercial real estate 7,548 (1,619 ) 711 628 7,268 Commercial & industrial 16,527 (2,461 ) 948 6,648 21,662 HELOC 928 (26 ) 1 (39 ) 864 Consumer 3,227 (1,981 ) 2,394 (551 ) 3,089 $ 112,347 $ (11,677 ) $ 15,329 $ (10,388 ) $ 105,611 Nine Months Ended June 30, 2014 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 64,184 $ (7,307 ) $ 15,631 $ (10,148 ) $ 62,360 Construction - speculative 8,407 (938 ) $ 97 (1,179 ) 6,387 Construction - custom 882 — — 796 1,678 Land - acquisition & development 9,165 (541 ) 823 (2,492 ) 6,955 Land - consumer lot loans 3,552 (559 ) 22 (153 ) 2,862 Multi-family 3,816 — — 325 4,141 Commercial real estate 5,595 (105 ) 24 1,175 6,689 Commercial & industrial 16,614 (730 ) 3,277 (465 ) 18,696 HELOC 1,002 (18 ) — 31 1,015 Consumer 3,524 (2,788 ) 2,871 (240 ) 3,367 $ 116,741 $ (12,986 ) $ 22,745 $ (12,350 ) $ 114,150 The Company recorded a $ 1,932,000 reversal of the provision for loan losses during the quarter ended June 30, 2015 , while a reversal of $ 3,000,000 was recorded for the same quarter one year ago. While the credit quality of the portfolio has been improving significantly and economic conditions are more favorable, the Company experienced two isolated charge-offs in the quarter ended June 30, 2015 that explain some of this reduction. The change in the current period was comprised of a reversal of $2,399,000 in allowance for loan losses and an increase in the reserve for unfunded commitments of $467,000 . During the fiscal year ended September 30, 2014 , there was a transfer of $2,910,000 from the general allowance to establish a reserve for unfunded commitments. Unfunded commitments are likely to be higher going forward as commercial loans are becoming a greater portion of balances. This reserve was $2,366,000 as of June 30, 2015 . Non-performing assets (“NPAs”) amounted to $128,883,000 , or 0.90% of total assets at June 30, 2015 , compared to $ 147,311,000 , or 1.00% , of total assets as of September 30, 2014 . Non-accrual loans decreased from $87,431,000 at September 30, 2014 , to $65,308,000 at June 30, 2015 . Acquired loans, including covered loans, are not usually classified as non-performing because at acquisition, the carrying value of these loans is adjusted to reflect fair value. As of June 30, 2015 , $33,573,000 in acquired loans were subject to the general allowance as the discount related to these balances was no longer sufficient to absorb potential losses. A loan is charged-off when the loss is estimable and it is confirmed that the borrower will not be able to meet its contractual obligations. The Company had net charge-offs of $313,000 for the quarter ended June 30, 2015 compared with $2,219,000 of net recoveries for the same quarter one year prior. As of June 30, 2015 , $105,611,000 of the allowance was calculated under the formulas contained in our general allowance methodology. As of September 30, 2014 , $112,287,000 of the allowance was calculated under the formulas contained in our general allowance methodology and the remaining $60,000 was made up of specific reserves on loans which were deemed to be impaired. The following tables shows a summary of loans collectively and individually evaluated for impairment and the related allocation of general and specific reserves as of June 30, 2015 and September 30, 2014 : June 30, 2015 Loans Collectively Evaluated for Impairment Loans Individually Evaluated for Impairment Allowance Allocation Recorded Investment of Loans (1) Ratio Allowance Allocation Recorded Investment of Loans (1) Ratio (In thousands) (In thousands) Single-family residential $ 52,004 $ 5,497,635 1.0 % $ — $ 49,305 — % Construction - speculative 5,933 110,727 5.4 — 6,983 — Construction - custom 985 204,914 0.5 — — — Land - acquisition & development 5,772 68,234 8.5 — 3,237 — Land - consumer lot loans 2,999 91,392 3.3 — 11,044 — Multi-family 5,035 1,008,452 0.5 — 4,584 — Commercial real estate 7,268 685,198 1.1 — 11,133 — Commercial & industrial 21,662 484,902 4.5 — — — HELOC 864 121,241 0.7 — 1,633 — Consumer 3,089 205,862 1.5 — 89 — $ 105,611 $ 8,478,557 1.3 % $ — $ 88,008 — % (1) Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans September 30, 2014 Loans Collectively Evaluated for Impairment Loans Individually Evaluated for Impairment Allowance Allocation Recorded Investment of Loans (1) Ratio Allowance Allocation Recorded Investment of Loans (1) Ratio (In thousands) (In thousands) Single-family residential $ 62,067 $ 5,487,331 1.1 % $ — $ 72,869 — % Construction - speculative 6,682 130,901 5.5 60 9,159 0.7 Construction - custom 1,695 385,464 0.5 — 360 — Land - acquisition & development 5,592 73,999 7.6 — 3,833 — Land - consumer lot loans 3,077 95,684 3.2 — 12,939 — Multi-family 4,248 911,162 0.5 — 6,124 — Commercial real estate 7,548 563,534 1.4 — 27,802 — Commercial & industrial 17,223 421,816 4.6 — — — HELOC 928 114,393 0.9 — 1,650 — Consumer 3,227 132,590 2.4 — — — $ 112,287 $ 8,316,874 1.4 % $ 60 $ 134,736 — % (1) Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans The Company has an asset quality review function that analyzes its loan portfolios 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 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 (net of LIP and excluding covered loans) based on credit quality indicators as defined above as of June 30, 2015 and September 30, 2014 . June 30, 2015 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,456,628 $ — $ 90,313 $ — $ — $ 5,546,941 Construction - speculative 114,706 — 3,005 — — 117,711 Construction - custom 204,914 — — — — 204,914 Land - acquisition & development 67,726 — 5,130 — — 72,856 Land - consumer lot loans 102,007 — 429 — — 102,436 Multi-family 1,009,785 — 3,960 — — 1,013,745 Commercial real estate 682,908 5,068 9,984 — — 697,960 Commercial & industrial 411,925 965 38,583 — — 451,473 HELOC 122,626 — 248 — — 122,874 Consumer 205,950 — — — — 205,950 8,379,175 6,033 151,652 — — 8,536,860 Non-impaired acquired loans Single-family residential 12,872 — 23 — — 12,895 Land - acquisition & development 651 — 377 — — 1,028 Land - consumer lot loans 2,355 — 117 — — 2,472 Multi-family 3,692 — — — — 3,692 Commercial real estate 86,529 511 14,502 — — 101,542 Commercial & industrial 54,243 1,228 2,141 — — 57,612 HELOC 6,414 — — — — 6,414 Consumer 2,484 — 413 — — 2,897 169,240 1,739 17,573 — — 188,552 Credit-impaired acquired loans Pool 1 - Construction and land A&D 6,655 — 2,305 — — 8,960 Pool 2 - Single-family residential 320 — — — — 320 Pool 3 - Multi-family — — — — — — Pool 4 - HELOC & other consumer 8,598 — 638 — — 9,236 Pool 5 - Commercial real estate 47,715 — 22,811 — — 70,526 Pool 6 - Commercial & industrial 2,931 — 375 — — 3,306 Total credit impaired acquired loans 66,219 — 26,129 — — 92,348 Total gross loans $ 8,614,634 $ 7,772 $ 195,354 $ — $ — $ 8,817,760 Total grade as a % of total gross loans 97.7 % 0.1 % 2.2 % — % — % September 30, 2014 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,424,624 $ 2,793 $ 130,339 $ — $ — $ 5,557,756 Construction - speculative 81,931 — 5,104 — — 87,035 Construction - custom 192,098 — — — — 192,098 Land - acquisition & development 61,949 — 6,117 — — 68,066 Land - consumer lot loans 107,979 — 610 — — 108,589 Multi-family 887,639 — 4,556 — — 892,195 Commercial real estate 495,892 1,971 31,441 — — 529,304 Commercial & industrial 359,168 14,740 5,265 — — 379,173 HELOC 115,794 — 248 — — 116,042 Consumer 132,444 — 241 — — 132,685 7,859,518 19,504 183,921 — — 8,062,943 Non-impaired acquired loans Single-family residential 11,716 — — — — 11,716 Land - acquisition & development 503 — 402 — — 905 Land - consumer lot loans 2,502 — — — — 2,502 Multi-family 2,999 — — — — 2,999 Commercial real estate 88,940 2,571 6,353 — — 97,864 Commercial & industrial 36,309 13,642 1,375 58 — 51,384 HELOC 8,274 — — — — 8,274 Consumer 5,670 — — — — 5,670 156,913 16,213 8,130 58 — 181,314 Credit-impaired acquired loans Pool 1 - Construction and land A&D 1,251 — 330 — — 1,581 Pool 2 - Single-family residential 325 — — — — 325 Pool 3 - Multi-family — — — — — — Pool 4 - HELOC & other consumer 10,194 — — — — 10,194 Pool 5 - Commercial real estate 48,867 2,143 12,702 — — 63,712 Pool 6 - Commercial & industrial 643 — 2,833 — — 3,476 Total credit impaired acquired loans 61,280 2,143 15,865 — — 79,288 Total gross loans $ 8,077,711 $ 37,860 $ 207,916 $ 58 $ — $ 8,323,545 Total grade as a % of total gross loans 97.2 % 0.4 % 2.4 % — % — % Credit Risk Profile Based on Payment Activity (excludes acquired and covered loans): June 30, 2015 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) Single-family residential $ 5,490,303 99.0 % $ 56,638 1.0 % Construction - speculative 116,949 99.4 762 0.6 Construction - custom 204,559 99.8 355 0.2 Land - acquisition & development 71,471 100.0 — — Land - consumer lot loans 101,128 98.4 1,308 1.6 Multi-family 1,012,250 99.8 786 0.2 Commercial real estate 693,479 99.7 2,852 0.3 Commercial & industrial 450,124 99.8 1,205 0.2 HELOC 121,985 99.3 889 0.7 Consumer 205,437 99.8 513 0.2 $ 8,467,685 99.2 % $ 65,308 0.8 % September 30, 2014 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) Single-family residential $ 5,486,136 98.7 % $ 74,067 1.3 % Construction - speculative 138,583 98.9 1,477 1.1 Construction - custom 385,824 100.0 — — Land - acquisition & development 77,021 99.0 811 1.0 Land - consumer lot loans 105,986 97.6 2,637 2.4 Multi-family 915,544 99.8 1,742 0.2 Commercial real estate 586,230 99.1 5,106 0.9 Commercial & industrial 379,219 100.0 7 — HELOC 115,247 99.3 795 0.7 Consumer 131,801 99.4 789 0.6 $ 8,321,591 99.0 % $ 87,431 1.0 % The following table provides information on impaired loan balances and the related allowances by loan types as of June 30, 2015 and September 30, 2014 : June 30, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) With no related allowance recorded: Single-family residential $ 21,524 $ 24,151 $ — $ 20,724 Construction - speculative 613 808 — 615 Construction - custom 355 355 — 178 Land - acquisition & development 680 1,223 — 683 Land - consumer lot loans 1,101 1,187 — 969 Multi-family 1,531 1,531 — 1,138 Commercial real estate 10,416 14,797 — 9,795 Commercial & industrial 4,340 18,276 — 5,664 HELOC 1,008 1,819 — 905 Consumer 414 627 — 414 41,982 64,774 — 41,085 With an allowance recorded: Single-family residential 275,179 279,043 8,057 275,889 Construction - speculative 6,371 7,161 — 6,389 Construction - custom — — — — Land - acquisition & development 3,536 4,476 — 3,571 Land - consumer lot loans 11,540 11,805 — 11,627 Multi-family 3,843 3,843 — 3,853 Commercial real estate 19,251 21,206 — 19,962 Commercial & industrial — — — — HELOC 1,394 1,394 — 1,394 Consumer 120 291 — 121 321,234 329,219 8,057 (1) 322,806 Total: Single-family residential 296,703 303,194 8,057 296,613 Construction - speculative 6,984 7,969 — 7,004 Construction - custom 355 355 — 178 Land - acquisition & development 4,216 5,699 — 4,254 Land - consumer lot loans 12,641 12,992 — 12,596 Multi-family 5,374 5,374 — 4,991 Commercial real estate 29,667 36,003 — 29,757 Commercial & industrial 4,340 18,276 — 5,664 HELOC 2,402 3,213 — 2,299 Consumer 534 918 — 535 $ 363,216 $ 393,993 $ 8,057 (1) $ 363,891 (1) Included in the general reserves. September 30, 2014 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) With no related allowance recorded: Single-family residential $ 24,044 $ 26,628 $ — $ 16,843 Construction - speculative 1,603 2,173 — 1,804 Land - acquisition & development 837 2,325 — 1,038 Land - consumer lot loans 974 1,072 — 713 Multi-family 1,111 1,111 — 327 Commercial real estate 13,234 20,085 — 11,720 Commercial & industrial 3,195 17,166 — 3,900 HELOC 1,019 1,730 — 612 Consumer 663 833 — 517 46,680 73,123 — 37,474 With an allowance recorded: Single-family residential 322,320 327,869 10,527 316,348 Construction - speculative 7,556 7,986 60 7,532 Land - acquisition & development 4,696 5,636 — 4,114 Land - consumer lot loans 13,002 13,385 — 12,858 Multi-family 5,243 5,463 — 4,957 Commercial real estate 34,159 35,028 — 18,572 HELOC 1,486 1,486 — 1,204 Consumer 43 214 — 79 388,505 397,067 10,587 (1) 365,664 Total: Single-family residential 346,364 354,497 10,527 333,191 Construction - speculative 9,159 10,159 60 9,336 Land - acquisition & development 5,533 7,961 — 5,152 Land - consumer lot loans 13,976 14,457 — 13,571 Multi-family 6,354 6,574 — 5,284 Commercial real estate 47,393 55,113 — 30,292 Commercial & industrial 3,195 17,166 — 3,900 HELOC 2,505 3,216 — 1,816 Consumer 706 1,047 — 596 $ 435,185 $ 470,190 $ 10,587 (1) $ 403,138 (1) Includes $60,000 of specific reserves and $10,527,000 included in the general reserves.

New Accounting Pronouncements

New Accounting Pronouncements	9 Months Ended
	Jun. 30, 2015
New Accounting Pronouncements [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements In April 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. These amendments require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. These amendments are effective for interim and annual periods beginning after December 15, 2015. Early adoption is permitted. ASU 2015-02 may be applied retrospectively in previously issued financial statements for one or more years with a cumulative-effect adjustment to retained earnings. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In June 2014, the FASB issued ASU 2014-11, Transfers and Servicing (Topic 860) - Repurchase to Maturity Transactions, Repurchase Financings, and Disclosures. Under this new accounting guidance, repurchase-to-maturity transactions will be accounted for as secured borrowings rather than sales of an asset, and transfers of financial assets with contemporaneous repurchase financings will no longer be evaluated to determine whether they should be accounted for on a combined basis as forward contracts. The new guidance also prescribes additional disclosures particularly on the nature of collateral pledged in repurchase financings accounted for as secured borrowings. The amendments in this update were effective for the first interim or annual period beginning after December 31, 2014, with the exception of the collateral disclosures which will be effective for interim periods beginning after March 15, 2015. This guidance did not have a material impact on the Company's consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This new accounting guidance clarifies the principles for recognizing revenue from contracts with customers. The new accounting guidance does not apply to financial instruments. For public companies, this update will be effective for interim and annual periods beginning after December 15, 2017 and interim reporting periods within annual reporting periods beginning after December 15, 2017. The Company does not expect the new guidance to have a material impact on its consolidated financial statements. In January 2014, the FASB issued ASU 2014-04, Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40) - Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. The new guidance clarifies that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either: (a) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure; or (b) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. ASU 2014-04 is effective for annual and interim reporting periods within those annual periods, beginning after December 15, 2014. Adoption of the new guidance is not expected to have a significant impact on the Company's consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements U.S. GAAP defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. U.S. GAAP also establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active exchange markets that the entity has the ability to access as of the measurement date. Level 2: Significant other observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active and other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. We have established and documented the Company's process for determining the fair values of 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 Securities Securities available for sale are recorded at fair value on a recurring basis. Most securities at fair value are priced using model pricing based on the securities' relationship to other benchmark quoted prices as provided by an independent third party, and under the provisions of the Fair Value Measurements and Disclosures topic of the FASB Accounting Standards Codification are considered a Level 2 input method. Securities that are traded on active exchanges are considered a Level 1 input method. Bank owned life insurance is recorded at the fair values of insurance policies owned based on the insurance contracts' cash surrender values. These are considered a Level 2 input method. The bank offers interest rate swaps to its variable rate borrowers who want to manage their interest rate risk. At the same time, the bank enters into the opposite trade with a counter party to offset its interest rate risk. The bank has also entered into long term borrowing hedges through forward starting interest rate swaps. The fair value of these interest rate swaps are estimated by a third party pricing service using a discounted cash flow technique. These are considered a Level 2 input method. The following tables present the balance of assets measured at fair value on a recurring basis at June 30, 2015 and September 30, 2014 : Fair Value at June 30, 2015 Level 1 Level 2 Level 3 Total (In thousands) Financial Assets Available-for-sale securities: Equity securities $ 102,447 $ — $ — $ 102,447 Obligations of U.S. government — 529,472 — 529,472 Obligations of states and political subdivisions — 27,275 — 27,275 Corporate debt securities — 528,716 — 528,716 Agency pass-through certificates — 1,328,852 — 1,328,852 Other Commercial MBS — 107,612 — 107,612 Total available-for-sale securities 102,447 2,521,927 — 2,624,374 Bank owned life insurance — 101,720 — 101,720 Interest rate contracts — 5,429 — 5,429 Total financial assets $ 102,447 $ 2,629,076 $ — $ 2,731,523 Financial Liabilities Interest rate contracts — 5,429 — 5,429 Long term borrowing hedge — 3,914 — 3,914 Total financial liabilities $ — $ 9,343 $ — $ 9,343 There were no transfers between, into and/or out of Levels 1, 2 or 3 during the quarter ended June 30, 2015 . Fair Value at September 30, 2014 Level 1 Level 2 Level 3 Total (In thousands) Financial Assets Available-for-sale securities: Equity securities $ 101,387 $ — $ — $ 101,387 Obligations of U.S. government — 731,943 — 731,943 Obligations of states and political subdivisions — 23,681 — 23,681 Obligations of foreign governments — — — — Corporate debt securities — 509,007 — 509,007 Mortgage-backed securities Agency pass-through certificates — 1,584,508 — 1,584,508 Other Commercial MBS — 98,916 — 98,916 Total available-for-sale securities 101,387 2,948,055 — 3,049,442 Interest rate contracts — 2,879 — 2,879 Total financial assets $ 101,387 $ 2,950,934 $ — $ 3,052,321 Financial Liabilities Interest rate contracts — 2,879 — 2,879 Long term borrowing hedge — 268 — 268 Total financial liabilities $ — $ 3,147 $ — $ 3,147 There were no transfers between, into and/or out of Levels 1, 2 or 3 during the fiscal year ended September 30, 2014 . Measured on a Nonrecurring Basis Impaired Loans & Real Estate Held for Sale Real estate held for sale consists principally of properties acquired through foreclosure. From time to time, and on a nonrecurring basis, fair value adjustments are recorded to reflect increases or decreases of principal balances based on the current appraisal or estimated value of the collateral, but only up to the fair value of the real estate owned as of the initial transfer date less selling costs. When management determines that the fair value of the collateral or the real estate held for sale requires additional adjustments, either as a result of a non-current appraisal value or when there is no observable market price, the Company classifies the impaired loan or real estate held for sale as Level 3. Level 3 assets recorded at fair value on a nonrecurring basis at June 30, 2015 included loans for which a specific reserve allowance was established or a partial charge-off was recorded based on the fair value of collateral, as well as covered REO and real estate held for sale for which fair value of the properties was less than the cost basis. The following tables present the aggregated balance of assets that were measured at estimated fair value on a nonrecurring basis at June 30, 2015 and June 30, 2014 , and the total losses (gains) resulting from those fair value adjustments for the quarters and nine months ended June 30, 2015 and June 30, 2014 . These estimated fair values are shown gross of estimated selling costs. Nine Months Ended June 30, 2015 Quarter Ended June 30, 2015 Nine Months Ended June 30, 2015 Level 1 Level 2 Level 3 Total Total Losses (Gains) (In thousands) Impaired loans (1) $ — $ — $ 6,735 $ 6,735 $ 3,621 $ 4,201 Covered REO (2) — — 1,950 1,950 (20 ) 168 Real estate held for sale (2) — — 71,831 71,831 2,386 (8,571 ) Balance at end of period $ — $ — $ 80,516 $ 80,516 $ 5,987 $ (4,202 ) (1) The losses represent remeasurements of collateral-dependent loans. (2) The (gains) losses represent net valuation adjustments on real estate held for sale. Nine Months Ended June 30, 2014 Quarter Ended June 30, 2014 Nine Months Ended June 30, 2014 Level 1 Level 2 Level 3 Total Total Losses (Gains) (In thousands) Impaired loans (1) $ — $ — $ 10,156 $ 10,156 $ (775 ) $ (1,311 ) Covered REO (2) — — 8,935 8,935 374 503 Real estate held for sale (2) — — 43,082 43,082 10,400 16,782 Balance at end of period $ — $ — $ 62,173 $ 62,173 $ 9,999 $ 15,974 (1) The gains represents remeasurements of collateral-dependent loans. (2) The losses represent aggregate net writedowns and charge-offs on real estate held for sale. 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 probable loan & lease losses 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 collateral is used for measurement of non collateral-dependent loans to test for impairment. The Company calculates the amount and timing of the future cash flows, the effective interest rate to be used to discount the cash flows and the basis for determination of the cash flows, including consideration of current economic and environmental factors, as well as other information relating to current or previous conditions. Real estate held for sale ("REO") - When a loan is reclassified from loan status to real estate held for sale due to the Company taking possession of the collateral, a Special Credits officer, along with the Special Credits manager, obtains a valuation, which may include appraisals or third-party price options, which is used to establish the fair value of the underlying collateral. The determined fair value, less selling costs, becomes the carrying value of the REO asset. The fair value of REO assets is re-evaluated quarterly and the REO asset is adjusted to reflect the fair value as necessary. After foreclosure, the valuations are updated periodically and current market conditions may require the assets to be written down further or up to the cost basis established on the date of transfer. The carrying balance of REO assets are also written down or up once a bona fide offer is contractually accepted, through execution of a Purchase and Sale Agreement, where the accepted price is lower than the cost established on the transfer date. 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. June 30, 2015 September 30, 2014 Level in Fair Value Hierarchy Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (In thousands) Financial assets Cash and cash equivalents 1 $ 349,550 $ 349,550 $ 781,843 $ 781,843 Available-for-sale securities Equity securities 1 102,447 102,447 101,387 101,387 Obligations of U.S. government 2 529,472 529,472 731,943 731,943 Obligations of states and political subdivisions 2 27,275 27,275 23,681 23,681 Corporate debt securities 2 528,716 528,716 509,007 509,007 Mortgage-backed securities Agency pass-through certificates 2 1,328,852 1,328,852 1,584,508 1,584,508 Other Commercial MBS 2 107,612 107,612 98,916 98,916 Total available-for-sale securities 2,624,374 2,624,374 3,049,442 3,049,442 Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 2 1,586,514 1,553,716 1,548,265 1,499,218 Total held-to-maturity securities 1,586,514 1,553,716 1,548,265 1,499,218 Loans receivable 3 8,645,609 9,175,928 8,148,322 8,667,771 Covered loans 3 77,311 81,737 176,476 176,761 FDIC indemnification asset 3 18,783 18,263 36,860 35,976 FHLB and FRB stock 2 103,189 103,189 158,839 158,839 Bank owned life insurance 2 101,720 101,720 — — Other assets - interest rate contracts 2 — 5,429 — 2,879 Financial liabilities Customer accounts 2 10,578,385 9,830,817 10,716,928 9,946,586 FHLB advances 2 1,730,000 1,833,413 1,930,000 2,054,437 Other liabilities - interest rate contracts 2 — 5,429 — 2,879 Other liabilities - long term borrowing hedge 2 — 3,914 — 268 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 under the provisions of the Fair Value Measurements and Disclosures topic of the FASB Accounting Standards Codification are considered a Level 2 input method. Equity securities which are exchange traded are considered a Level 1 input method. Loans receivable and covered loans – 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. Bank owned life insurance – Fair values of insurance policies owned are based on the insurance contracts' cash surrender values. 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. Long Term Borrowing Hedges – The fair value of the forward starting interest rate swaps are estimated by a third party pricing service using a discounted cash flow technique. The following tables provide a reconciliation of amortized cost to fair value of available-for-sale and held-to-maturity securities as of June 30, 2015 , and September 30, 2014 : June 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 $ 135,967 $ 2,078 $ (460 ) $ 137,585 1.43 % 5 to 10 years 75,441 149 (7 ) 75,583 1.20 Over 10 years 316,929 435 (1,060 ) 316,304 1.31 Equity Securities Within 1 year 500 18 — 518 1.80 1 to 5 years 100,000 1,929 — 101,929 1.90 5 to 10 years — — — — — Corporate bonds due Within 1 year 39,702 283 — 39,985 0.68 1 to 5 years 303,094 1,414 — 304,508 0.81 5 to 10 years 133,306 1,814 (1,647 ) 133,473 1.54 Over 10 years 50,000 750 — 50,750 3.00 Municipal bonds due 1 to 5 years 2,278 — (1 ) 2,277 1.23 5 to 10 years 1,295 — (14 ) 1,281 2.05 Over 10 years 20,387 3,330 — 23,717 6.45 Mortgage-backed securities Agency pass-through certificates 1,316,686 14,988 (2,822 ) 1,328,852 2.58 Other Commercial MBS 107,512 151 (51 ) 107,612 1.48 2,603,097 27,339 (6,062 ) 2,624,374 2.00 Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 1,586,514 6,193 (38,991 ) 1,553,716 3.16 $ 4,189,611 $ 33,532 $ (45,053 ) $ 4,178,090 2.43 % September 30, 2014 Amortized Cost Gross Unrealized Fair Value Yield Gains Losses (In thousands) Available-for-sale securities U.S. government and agency securities due 1 to 5 years $ 171,154 $ 2,585 $ (748 ) $ 172,991 1.26 % 5 to 10 years 203,317 300 (102 ) 203,515 1.45 Over 10 years 354,828 1,028 (419 ) 355,437 1.25 Equity Securities 1 to 5 years 100,500 887 — 101,387 1.90 Corporate bonds due Within 1 year 15,000 75 — 15,075 1.00 1 to 5 years 302,540 2,372 — 304,912 0.71 5 to 10 years 138,201 1,789 (970 ) 139,020 1.43 Over 10 years 50,000 — — 50,000 3.00 Municipal bonds due Over 10 years 20,402 3,279 — 23,681 6.45 Mortgage-backed securities Agency pass-through certificates 1,561,639 24,893 (2,024 ) 1,584,508 2.57 Other Commercial MBS 98,851 65 — 98,916 1.49 3,016,432 37,273 (4,263 ) 3,049,442 1.99 Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 1,548,265 4,855 (53,902 ) 1,499,218 3.13 $ 4,564,697 $ 42,128 $ (58,165 ) $ 4,548,660 2.38 % During the quarter ended June 30, 2015 , there were $238,000,000 of available-for-sale securities sold for a gain of $9,639,000 . There were no available-for-sale securities sold during the quarter ended June 30, 2014 . Substantially all of the agency mortgage-backed securities have contractual due dates that exceed 10 years . The following tables show the unrealized gross losses and fair value of securities as of June 30, 2015 and September 30, 2014 , by length of time that individual securities in each category have been in a continuous loss position. The decline in fair value is attributable to changes in interest rates. Because the Company does not intend to sell these securities and does not consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other than temporarily impaired. June 30, 2015 Less than 12 months 12 months or more Total Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value (In thousands) Corporate bonds due $ (1,022 ) $ 23,978 $ (625 ) $ 34,375 $ (1,647 ) $ 58,353 Municipal bonds due (15 ) 3,558 — — (15 ) 3,558 U.S. government and agency securities due (558 ) 140,285 (969 ) 142,318 (1,527 ) 282,603 Agency pass-through certificates (1,919 ) 454,980 (39,945 ) 1,360,218 (41,864 ) 1,815,198 $ (3,514 ) $ 622,801 $ (41,539 ) $ 1,536,911 $ (45,053 ) $ 2,159,712 September 30, 2014 Less than 12 months 12 months or more Total Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value (In thousands) Corporate bonds due $ (125 ) $ 24,875 $ (845 ) $ 24,155 $ (970 ) $ 49,030 U.S. government and agency securities due (472 ) 316,578 (797 ) 109,354 (1,269 ) 425,932 Agency pass-through certificates (215 ) 19,212 (55,711 ) 1,509,209 (55,926 ) 1,528,421 $ (812 ) $ 360,665 $ (57,353 ) $ 1,642,718 $ (58,165 ) $ 2,003,383

Covered Assets

Covered Assets	9 Months Ended
	Jun. 30, 2015
Covered Assets [Abstract]
Covered Assets	Covered Assets Covered assets represent loans and real estate held for sale acquired from the FDIC that are subject to loss sharing agreements and these net balances were $81,745,000 as of June 30, 2015 compared to $200,558,000 as of September 30, 2014 . The FDIC loss share coverage for the acquired commercial loans from the former Horizon Bank of $47,774,000 expired as of March 31, 2015 with final reporting as of April 30, 2015 and these loans were transferred to non-covered loans receivable. Recoveries to the extent that claims were made will continue to be shared through March 31, 2018. As of June 30, 2015 , there were $38,712,000 of commercial loans from the former Home Valley Bank which are scheduled to have their loss share expire on September 30, 2015. The FDIC loss share coverage for single family residential loans will continue for another five years . Changes in the net carrying amount and accretable yield for acquired impaired and non-impaired covered loans for the year to date period ended June 30, 2015 and the fiscal year ended September 30, 2014 were as follows: June 30, 2015 Acquired Impaired Acquired Non-impaired Accretable Yield Net Carrying Amount of Loans Accretable Yield Net Carrying Amount of Loans (In thousands) Balance at beginning of period $ 64,534 $ 78,055 $ 10,259 $ 98,422 Transfer to non-covered (23,167 ) (15,866 ) (1,482 ) (33,649 ) Reclassification from nonaccretable balance, net 6,307 — — — Accretion (11,577 ) 11,577 (4,358 ) 4,358 Transfers to REO — (1,893 ) — — Payments received, net — (19,845 ) — (43,848 ) Balance at end of period $ 36,097 $ 52,028 $ 4,419 $ 25,283 September 30, 2014 Acquired Impaired Acquired Non-impaired Accretable Yield Net Carrying Amount of Loans Accretable Yield Carrying Amount of Loans (In thousands) Balance at beginning of period $ 78,277 $ 138,091 $ 17,263 $ 157,856 Reclassification from nonaccretable balance, net 10,186 (2,069 ) — — Accretion (23,929 ) 23,929 (7,004 ) 7,004 Transfers to REO — (8,943 ) — — Payments received, net — (72,953 ) — (66,438 ) Balance at end of period $ 64,534 $ 78,055 $ 10,259 $ 98,422 At June 30, 2015 , none of the acquired impaired or non-impaired covered 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 outstanding principal balance of acquired covered loans was $81,164,000 and $213,203,000 as of June 30, 2015 and September 30, 2014 , respectively. The discount balance related to the acquired covered loans was $3,853,000 and $34,483,000 as of June 30, 2015 and September 30, 2014 , respectively. There is no allowance for covered loans as of June 30, 2015 . There was an allowance of $2,244,000 as of September 30, 2014. The allowance for credit losses related to the acquired loans as of September 30, 2014 results from decreased expectations of future cash flows due to increased credit losses for certain acquired loan pools. The allowance allocation was reversed during the quarter ended December 31, 2014 due to improvements in the expected future cash flows of certain acquired loan pools. The following table shows the year to date activity for the FDIC indemnification asset: June 30, 2015 September 30, 2014 (In thousands) Balance at beginning of fiscal year 2015 and 2014 $ 36,860 $ 64,615 Additions and deletions (1) (1,795 ) 1,795 Payments made (received) 714 (2,502 ) Amortization (17,418 ) (27,850 ) Accretion 422 802 Balance at end of period $ 18,783 $ 36,860 (1) reclassification of ALLL allowance due to changes in cash flows The following tables provide information on covered loans based on credit quality indicators (defined in Note E ) as of June 30, 2015 and September 30, 2014 : June 30, 2015 Internally Assigned Grade Total Net Loans Pass Special mention Substandard Doubtful Loss (In thousands) Acquired non-impaired loans: Single-family residential $ 15,300 $ — $ 593 $ — $ — $ 15,893 Commercial & industrial — — 28 — — 28 HELOC 9,214 — — — — 9,214 $ 24,514 $ — $ 621 $ — $ — $ 25,135 Total grade as a % of total net loans 97.5 % — % 2.5 % — % — % Acquired credit-impaired loans: Pool 1 - Construction and land A&D $ 151 $ — $ 1,613 $ — $ — $ 1,764 Pool 2 - Single-family residential 14,375 — 331 — — 14,706 Pool 3 - Multi-family 48 — 377 — — 425 Pool 4 - HELOC & other consumer 2,611 — — — — 2,611 Pool 5 - Commercial real estate 23,805 — 11,048 — — 34,853 Pool 6 - Commercial & industrial 394 — 1,276 — — 1,670 $ 41,384 $ — $ 14,645 $ — $ — 56,029 Total covered loans 81,164 Discount (3,853 ) Allowance — Covered loans, net $ 77,311 September 30, 2014 Internally Assigned Grade Total Net Loans Pass Special mention Substandard Doubtful Loss (In thousands) Acquired non-impaired loans: Single-family residential $ 21,311 $ — $ 1,756 $ — $ — $ 23,067 Land - acquisition & development 972 — 392 — — 1,364 Land - consumer lot loans 73 — — — — 73 Multi-family 6,598 — — — — 6,598 Commercial real estate 26,940 115 24,281 — — 51,336 Commercial & industrial 2,801 — 2,691 — — 5,492 HELOC 11,777 — — — — 11,777 Consumer 454 — — — — 454 $ 70,926 $ 115 $ 29,120 $ — $ — $ 100,161 Total grade as a % of total net loans 70.8 % 0.1 % 29.1 % — % — % Acquired credit-impaired loans: Pool 1 - Construction and land A&D $ 8,349 $ — $ 11,912 $ — $ — $ 20,261 Pool 2 - Single-family residential 15,585 — 379 — — 15,964 Pool 3 - Multi-family 52 — 471 — — 523 Pool 4 - HELOC & other consumer 2,804 — 1,173 — — 3,977 Pool 5 - Commercial real estate 33,909 700 29,782 — — 64,391 Pool 6 - Commercial & industrial 3,509 — 3,892 525 — 7,926 $ 64,208 $ 700 $ 47,609 $ 525 $ — 113,042 Total covered loans 213,203 Discount (34,483 ) Allowance (2,244 ) Covered loans, net $ 176,476 The following tables provide an analysis of the age of acquired non credit-impaired covered loans in past due status as of June 30, 2015 and September 30, 2014 : June 30, 2015 Amount of Loans Net of LIP & Chg.-Offs Days Delinquent Based on $ Amount of Loans % based on $ Type of Loans Current 30 60 90 Total Past Due Single-family residential $ 15,893 $ 15,300 $ — $ 214 $ 379 $ 593 3.73 % Commercial & industrial 28 28 — — — — — HELOC 9,214 9,204 10 — — 10 0.11 $ 25,135 $ 24,532 $ 10 $ 214 $ 379 $ 603 2.40 % September 30, 2014 Amount of Loans Net of LIP & Chg.-Offs Days Delinquent Based on $ Amount of Loans % based on $ Type of Loans Current 30 60 90 Total Past Due Single-family residential $ 23,067 $ 22,391 $ 230 $ 40 $ 406 $ 676 2.93 % Land - acquisition & development 1,364 1,328 — — 36 36 2.64 Land - consumer lot loans 73 73 — — — — — Multi-family 6,598 5,502 — — 1,096 1,096 16.61 Commercial real estate 51,336 51,336 — — — — — Commercial & industrial 5,492 5,492 — — — — — HELOC 11,777 11,777 — — — — — Consumer 454 443 11 — — 11 2.42 $ 100,161 $ 98,342 $ 241 $ 40 $ 1,538 $ 1,819 1.82 %

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities The Bank periodically enters into certain commercial loan interest rate swap agreements in order to provide commercial loan customers the ability to convert from variable to fixed interest rate payments, while the Bank retains a variable rate loan. Under these agreements, the Bank 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 Bank 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 interest rate swap agreements with the clients and third parties are not designated as hedges under ASC 815, the Derivatives and Hedging topic; the instruments are marked to market in earnings. The notional amount of open interest rate swap agreements at June 30, 2015 was $736,232,000 compared to $264,169,000 as of September 30, 2014 . There was no impact to the statement of operations for the nine months ended June 30, 2015 as the asset and liability side of the swaps offset each other. The fee income related to swaps was $936,673 for the nine months ended June 30, 2015 . Additionally, the Bank had $400,000,000 in forward starting interest rate swaps to hedge future borrowing rates as of June 30, 2015 . Their impact on accumulated other comprehensive income as of June 30, 2015 was an after-tax loss of $2,476,000 . These derivatives are designated as cash flow hedging instruments in accordance with ASC 815. The following table presents the fair value and balance sheet classification of derivatives at June 30, 2015 and September 30, 2014 : Asset Derivatives Liability Derivatives June 30, 2015 September 30, 2014 June 30, 2015 September 30, 2014 Balance Sheet Balance Sheet Balance Sheet Balance Sheet Location Fair Value Location Fair Value Location Fair Value Location Fair Value (In thousands) Interest rate contracts Other assets $ 5,429 Other assets $ 2,879 Other liabilities $ 5,429 Other liabilities $ 2,879 Long term borrowing hedge Other assets — Other assets — Other liabilities 3,914 Other liabilities 268

Summary of Significant Accoun17

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Off-Balance-Sheet Credit Exposures	The Company estimates losses on off-balance-sheet credit exposures by allocating a loss percentage derived from historical loss factors for each asset class.
New Accounting Pronouncements	In April 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. These amendments require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. These amendments are effective for interim and annual periods beginning after December 15, 2015. Early adoption is permitted. ASU 2015-02 may be applied retrospectively in previously issued financial statements for one or more years with a cumulative-effect adjustment to retained earnings. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In June 2014, the FASB issued ASU 2014-11, Transfers and Servicing (Topic 860) - Repurchase to Maturity Transactions, Repurchase Financings, and Disclosures. Under this new accounting guidance, repurchase-to-maturity transactions will be accounted for as secured borrowings rather than sales of an asset, and transfers of financial assets with contemporaneous repurchase financings will no longer be evaluated to determine whether they should be accounted for on a combined basis as forward contracts. The new guidance also prescribes additional disclosures particularly on the nature of collateral pledged in repurchase financings accounted for as secured borrowings. The amendments in this update were effective for the first interim or annual period beginning after December 31, 2014, with the exception of the collateral disclosures which will be effective for interim periods beginning after March 15, 2015. This guidance did not have a material impact on the Company's consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This new accounting guidance clarifies the principles for recognizing revenue from contracts with customers. The new accounting guidance does not apply to financial instruments. For public companies, this update will be effective for interim and annual periods beginning after December 15, 2017 and interim reporting periods within annual reporting periods beginning after December 15, 2017. The Company does not expect the new guidance to have a material impact on its consolidated financial statements. In January 2014, the FASB issued ASU 2014-04, Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40) - Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. The new guidance clarifies that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either: (a) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure; or (b) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. ASU 2014-04 is effective for annual and interim reporting periods within those annual periods, beginning after December 15, 2014. Adoption of the new guidance is not expected to have a significant impact on the Company's consolidated financial statements.

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Schedule of Net Liabilities Acquired	The table below displays the adjusted fair value as of the acquisition date for each major class of assets acquired and liabilities assumed during fiscal year 2014 : Adjusted Fair Value Recorded by Washington Federal (In thousands) Assets: Cash $ 1,776,660 Loans receivable, net 12,881 Property and equipment, net 25,097 Core deposit intangible 11,040 Goodwill 31,225 Other assets 70 Total Assets 1,856,973 Liabilities: Customer accounts 1,853,798 Other liabilities 3,175 Total Liabilities 1,856,973 Net assets acquired $ —

Loans Receivable (excluding C19

Loans Receivable (excluding Covered Loans) (Tables)	9 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Schedule of Loans Receivable (excluding Covered Loans)	June 30, 2015 September 30, 2014 (In thousands) Non-acquired loans Single-family residential $ 5,549,746 60.1 % $ 5,560,203 64.1 % Construction - speculative 181,668 2.0 140,060 1.6 Construction - custom 375,425 4.1 385,824 4.5 Land - acquisition & development 87,382 0.9 77,832 0.9 Land - consumer lot loans 102,495 1.1 108,623 1.3 Multi-family 1,089,682 11.8 917,286 10.6 Commercial real estate 808,539 8.7 591,336 6.9 Commercial & industrial 451,478 4.9 379,226 4.4 HELOC 122,870 1.3 116,042 1.4 Consumer 205,932 2.2 132,590 1.5 Total non-acquired loans 8,975,217 97.1 8,409,022 97.2 Non-impaired acquired loans Single-family residential 12,895 0.1 11,716 0.1 Construction - speculative — — — — Construction - custom — — — — Land - acquisition & development 1,028 — 905 — Land - consumer lot loans 2,472 — 2,507 — Multi-family 3,692 — 2,999 — Commercial real estate 102,089 1.1 97,898 1.1 Commercial & industrial 57,614 0.6 51,386 0.6 HELOC 6,414 0.1 8,274 0.1 Consumer 2,916 — 5,670 0.1 Total non-impaired acquired loans 189,120 1.9 181,355 2.0 Credit-impaired acquired loans Single-family residential 6,288 0.1 325 — Construction - speculative — — — — Land - acquisition & development 1,842 — 1,622 — Land - consumer lot loans 496 — — — Multi-family — — — — Commercial real estate 71,196 0.8 63,723 0.7 Commercial & industrial 3,881 — 3,476 — HELOC 8,553 0.1 10,139 0.1 Consumer 108 — 55 — Total credit-impaired acquired loans 92,364 1.0 79,340 0.8 Total loans Single-family residential 5,568,929 60.3 5,572,244 64.2 Construction - speculative 181,668 2.0 140,060 1.6 Construction - custom 375,425 4.1 385,824 4.5 Land - acquisition & development 90,252 0.9 80,359 0.9 Land - consumer lot loans 105,463 1.1 111,130 1.3 Multi-family 1,093,374 11.8 920,285 10.6 Commercial real estate 981,824 10.6 752,957 8.7 Commercial & industrial 512,973 5.5 434,088 5.0 HELOC 137,837 1.5 134,455 1.6 Consumer 208,956 2.2 138,315 1.6 Total Loans 9,256,701 100 % 8,669,717 100 % Less: Allowance for probable losses 105,611 112,347 Loans in process 438,941 346,172 Discount on acquired loans 28,399 25,391 Deferred net origination fees 38,141 37,485 611,092 521,395 $ 8,645,609 $ 8,148,322
Schedule of Changes in the Accretable Yield for Credit Impaired Acquired Loans	Changes in the carrying amount and accretable yield for acquired non-impaired and credit-impaired loans (excluding covered loans) for the nine months ended June 30, 2015 and June 30, 2014 were as follows: June 30, 2015 Acquired Impaired Acquired Non-impaired Accretable Yield Net Carrying Amount of Loans Accretable Yield Carrying Amount of Loans (In thousands) Balance as of beginning of period $ 32,591 $ 57,771 $ 4,254 $ 177,440 Transfer from covered loans (2) 23,167 15,866 1,482 33,649 Additions — — 346 — Accretion (11,501 ) 11,501 (2,427 ) 2,427 Transfers to REO — (458 ) — — Payments received, net — (18,140 ) — (27,556 ) Balance as of end of period $ 44,257 $ 66,540 $ 3,655 $ 185,960 (1) reclassification due to improvements in expected cash flows of the underlying loans (2) reclassification from covered to non-covered due to expiration of loss share agreement June 30, 2014 Acquired Impaired Acquired Non-impaired Accretable Yield Net Carrying Amount of Loans Accretable Yield Carrying Amount of Loans (In thousands) Balance as of beginning of period $ 37,236 $ 69,718 $ 4,977 $ 245,373 Reclassification from nonaccretable balance, net (1) 7,300 — — — Accretion (8,884 ) 8,884 (606 ) 606 Transfers to REO — (1,188 ) — (4,710 ) Payments received, net — (17,616 ) — (48,988 ) Balance as of end of period $ 35,652 $ 59,798 $ 4,371 $ 192,281 (1) reclassification due to improvements in expected cash flows of the underlying loans.
Summary of Information Regarding Non-Accrual Loans	The following table sets forth information regarding non-accrual loans (excluding covered loans) held by the Company as of the dates indicated: June 30, 2015 September 30, 2014 (In thousands) Non-accrual loans: Single-family residential $ 56,638 86.7 % $ 74,067 84.8 % Construction - speculative 762 1.2 1,477 1.7 Construction - custom 355 0.5 — — Land - acquisition & development — — 811 0.9 Land - consumer lot loans 1,308 2.0 2,637 3.0 Multi-family 786 1.2 1,742 2.0 Commercial real estate 2,852 4.4 5,106 5.8 Commercial & industrial 1,205 1.8 7 — HELOC 889 1.4 795 0.9 Consumer 513 0.8 789 0.9 Total non-accrual loans $ 65,308 100 % $ 87,431 100 %
Analysis of Age of Loans in Past Due Status	The following tables provide an analysis of the age of loans (net of LIP and excluding covered loans) in past due status as of June 30, 2015 and September 30, 2014 , respectively. June 30, 2015 Amount of Loans Days Delinquent Based on $ Amount of Loans % based on $ Type of Loan Net of LIP & Chg.-Offs Current 30 60 90 Total (In thousands) Non-acquired loans Single-family residential $ 5,546,941 $ 5,473,728 $ 14,525 $ 8,585 $ 50,103 $ 73,213 1.32 % Construction - speculative 117,711 117,711 — — — — — Construction - custom 204,914 204,140 310 109 355 774 0.38 Land - acquisition & development 72,856 72,429 427 — — 427 0.59 Land - consumer lot loans 102,436 99,717 595 85 2,039 2,719 2.65 Multi-family 1,013,745 1,012,704 — 421 620 1,041 0.10 Commercial real estate 697,960 696,678 421 57 804 1,282 0.18 Commercial & industrial 451,473 451,404 69 — — 69 0.02 HELOC 122,874 121,836 401 62 575 1,038 0.84 Consumer 205,950 205,259 519 172 — 691 0.34 Total non-acquired loans 8,536,860 8,455,606 17,267 9,491 54,496 81,254 0.95 Non-impaired acquired loans Single-family residential 12,895 12,872 — — 23 23 0.18 Land - acquisition & development 1,028 1,028 — — — — — Land - consumer lot loans 2,472 2,339 — 16 117 133 5.38 Multi-family 3,692 3,692 — — — — — Commercial real estate 101,542 101,369 — — 173 173 0.17 Commercial & industrial 57,612 57,574 — — 38 38 0.07 HELOC 6,414 5,973 224 217 — 441 6.88 Consumer 2,897 2,491 48 — 358 406 14.01 Total non-impaired acquired loans 188,552 187,338 272 233 709 1,214 0.64 Credit-impaired acquired loans Single-family residential 6,284 6,284 — — — — — Land - acquisition & development 1,842 771 203 — 868 1,071 58.14 Land - consumer lot loans 495 495 — — — — NM Commercial real estate 71,189 69,448 608 — 1,133 1,741 2.45 Commercial & industrial 3,881 3,058 — — 823 823 21.21 HELOC 8,549 8,236 — — 313 313 3.66 Consumer 108 108 — — — — — Total credit-impaired acquired loans 92,348 88,400 811 — 3,137 3,948 4.28 Total Loans $ 8,817,760 $ 8,731,344 $ 18,350 $ 9,724 $ 58,342 $ 86,416 0.98 % September 30, 2014 Amount of Loans Days Delinquent Based on $ Amount of Loans % based on $ Type of Loan Net of LIP & Chg.-Offs Current 30 60 90 Total (In thousands) Non-acquired loans Single-family residential $ 5,557,753 $ 5,467,239 $ 15,926 $ 9,139 $ 65,449 $ 90,514 1.63 % Construction - speculative 87,035 87,035 — — — — — Construction - custom 192,098 191,262 836 — — 836 0.44 Land - acquisition & development 68,066 67,911 155 — — 155 0.23 Land - consumer lot loans 108,589 104,571 1,246 304 2,468 4,018 3.70 Multi-family 892,196 891,372 205 16 603 824 0.09 Commercial real estate 529,453 513,409 67 15,118 859 16,044 3.03 Commercial & industrial 379,226 377,848 53 1,318 7 1,378 0.36 HELOC 116,262 115,262 335 292 373 1,000 0.86 Consumer 132,686 131,642 654 262 128 1,044 0.79 Total non-acquired loans 8,063,364 7,947,551 19,477 26,449 69,887 115,813 1.44 Non-impaired acquired loans Single-family residential 11,716 11,693 — — 23 23 0.20 Land - acquisition & development 905 905 — — — — — Land - consumer lot loans 2,502 2,132 — 370 — 370 14.79 Multi-family 2,999 2,999 — — — — — Commercial real estate 97,715 96,948 104 — 663 767 0.78 Commercial & industrial 51,329 51,229 — 100 — 100 0.19 HELOC 8,056 8,056 — — — — — Consumer 5,670 4,983 22 4 661 687 12.12 Total non-impaired acquired loans 180,892 178,945 126 474 1,347 1,947 1.08 Credit-impaired acquired loans Single-family residential 325 325 — — — — — Land - acquisition & development 1,581 1,581 — — — — — Commercial real estate 63,713 61,713 152 909 939 2,000 3.14 Commercial & industrial 3,477 3,470 7 — — 7 0.20 HELOC 10,138 9,641 — 75 422 497 4.90 Consumer 54 54 — — — — — Total credit-impaired acquired loans 79,288 76,784 159 984 1,361 2,504 3.16 Total Loans $ 8,323,544 $ 8,203,280 $ 19,762 $ 27,907 $ 72,595 $ 120,264 1.44 %
Schedule of Impaired Loans, Loan Commitments and Loans Serviced	The following tables provide information related to loans that were restructured during the periods indicated: Quarter Ended June 30, 2015 2014 Pre-Modification Post-Modification Pre-Modification Post-Modification Outstanding Outstanding Outstanding Outstanding Number of Recorded Recorded Number of Recorded Recorded Contracts Investment Investment Contracts Investment Investment (In thousands) (In thousands) Troubled Debt Restructurings: Single-family residential 8 $ 1,611 $ 1,611 48 $ 10,693 $ 10,693 Land - acquisition & development — — — 3 756 756 Land - consumer lot loans 2 203 203 5 573 573 Commercial real estate — — — 2 1,398 1,398 10 $ 1,814 $ 1,814 58 $ 13,420 $ 13,420 Nine Months Ended June 30, 2015 2014 Pre-Modification Post-Modification Pre-Modification Post-Modification Outstanding Outstanding Outstanding Outstanding Number of Recorded Recorded Number of Recorded Recorded Contracts Investment Investment Contracts Investment Investment (In thousands) (In thousands) Troubled Debt Restructurings: Single-family residential 57 13,875 13,875 199 45,132 45,132 Construction - speculative 2 718 718 — — — Construction - custom 2 532 532 — — — Land - consumer lot loans 6 923 923 10 1,746 1,746 Multi-family — — — 2 1,201 1,201 Commercial real estate 3 3,175 3,175 3 2,197 2,197 HELOC — — — 1 261 261 Consumer 1 85 85 3 207 207 71 $ 19,308 $ 19,308 221 $ 51,500 $ 51,500
Schedule of Loan Modifications	The following tables provide information on restructured loans for which a payment default occurred during the periods indicated that had been modified as a TDR within 12 months or less of the payment default: Quarter Ended June 30, 2015 2014 Number of Recorded Number of Recorded Contracts Investment Contracts Investment (In thousands) (In thousands) Troubled Debt Restructurings That Subsequently Defaulted: Single-family residential 9 $ 1,594 17 $ 3,088 Land - consumer lot loans 2 301 1 69 Consumer — — 1 170 11 $ 1,895 19 $ 3,327 Nine Months Ended June 30, 2015 2014 Number of Recorded Number of Recorded Contracts Investment Contracts Investment (In thousands) (In thousands) Troubled Debt Restructurings That Subsequently Defaulted: Single-family residential 19 $ 3,329 42 $ 9,206 Land - consumer lot loans 7 991 4 445 Consumer — — 1 170 26 $ 4,320 47 $ 9,821

Allowance for Losses on Loans (

Allowance for Losses on Loans (Tables)	9 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Summary of Activity in Allowance for Loan Losses	The following table summarizes the activity in the allowance for loan losses (excluding certain acquired and covered loans) for the three and nine months ended June 30, 2015 and 2014 : Three Months Ended June 30, 2015 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 54,762 $ (1,698 ) $ 3,878 $ (4,938 ) $ 52,004 Construction - speculative 5,445 — — 488 5,933 Construction - custom 968 — — 17 985 Land - acquisition & development 7,405 — 1 (1,634 ) 5,772 Land - consumer lot loans 3,035 (276 ) 187 53 2,999 Multi-family 4,673 — — 362 5,035 Commercial real estate 6,734 (1,592 ) 230 1,896 7,268 Commercial & industrial 21,146 (2,106 ) 896 1,726 21,662 HELOC 850 (26 ) 1 39 864 Consumer 3,305 (853 ) 1,045 (408 ) 3,089 $ 108,323 $ (6,551 ) $ 6,238 $ (2,399 ) $ 105,611 Three Months Ended June 30, 2014 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 63,348 $ (2,530 ) $ 4,717 $ (3,175 ) $ 62,360 Construction - speculative 6,773 — $ 2 (388 ) 6,387 Construction - custom 1,599 — — 79 1,678 Land - acquisition & development 6,027 — 85 843 6,955 Land - consumer lot loans 2,974 (86 ) — (26 ) 2,862 Multi-family 4,187 — — (46 ) 4,141 Commercial real estate 5,924 (32 ) 24 773 6,689 Commercial & industrial 20,403 (38 ) 4 (1,673 ) 18,696 HELOC 975 (18 ) — 58 1,015 Consumer 2,721 (696 ) 787 555 3,367 $ 114,931 $ (3,400 ) $ 5,619 $ (3,000 ) $ 114,150 Nine Months Ended June 30, 2015 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 62,763 $ (4,801 ) $ 10,553 $ (16,511 ) $ 52,004 Construction - speculative 6,742 (388 ) $ 75 (496 ) 5,933 Construction - custom 1,695 — — (710 ) 985 Land - acquisition & development 5,592 (38 ) 206 12 5,772 Land - consumer lot loans 3,077 (363 ) 221 64 2,999 Multi-family 4,248 — 220 567 5,035 Commercial real estate 7,548 (1,619 ) 711 628 7,268 Commercial & industrial 16,527 (2,461 ) 948 6,648 21,662 HELOC 928 (26 ) 1 (39 ) 864 Consumer 3,227 (1,981 ) 2,394 (551 ) 3,089 $ 112,347 $ (11,677 ) $ 15,329 $ (10,388 ) $ 105,611 Nine Months Ended June 30, 2014 Beginning Allowance Charge-offs Recoveries Provision & Transfers Ending Allowance (In thousands) Single-family residential $ 64,184 $ (7,307 ) $ 15,631 $ (10,148 ) $ 62,360 Construction - speculative 8,407 (938 ) $ 97 (1,179 ) 6,387 Construction - custom 882 — — 796 1,678 Land - acquisition & development 9,165 (541 ) 823 (2,492 ) 6,955 Land - consumer lot loans 3,552 (559 ) 22 (153 ) 2,862 Multi-family 3,816 — — 325 4,141 Commercial real estate 5,595 (105 ) 24 1,175 6,689 Commercial & industrial 16,614 (730 ) 3,277 (465 ) 18,696 HELOC 1,002 (18 ) — 31 1,015 Consumer 3,524 (2,788 ) 2,871 (240 ) 3,367 $ 116,741 $ (12,986 ) $ 22,745 $ (12,350 ) $ 114,150
Summary of Loans Collectively and Individually Evaluated for Impairment and Related Allocation of Reserves	The following tables shows a summary of loans collectively and individually evaluated for impairment and the related allocation of general and specific reserves as of June 30, 2015 and September 30, 2014 : June 30, 2015 Loans Collectively Evaluated for Impairment Loans Individually Evaluated for Impairment Allowance Allocation Recorded Investment of Loans (1) Ratio Allowance Allocation Recorded Investment of Loans (1) Ratio (In thousands) (In thousands) Single-family residential $ 52,004 $ 5,497,635 1.0 % $ — $ 49,305 — % Construction - speculative 5,933 110,727 5.4 — 6,983 — Construction - custom 985 204,914 0.5 — — — Land - acquisition & development 5,772 68,234 8.5 — 3,237 — Land - consumer lot loans 2,999 91,392 3.3 — 11,044 — Multi-family 5,035 1,008,452 0.5 — 4,584 — Commercial real estate 7,268 685,198 1.1 — 11,133 — Commercial & industrial 21,662 484,902 4.5 — — — HELOC 864 121,241 0.7 — 1,633 — Consumer 3,089 205,862 1.5 — 89 — $ 105,611 $ 8,478,557 1.3 % $ — $ 88,008 — % (1) Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans September 30, 2014 Loans Collectively Evaluated for Impairment Loans Individually Evaluated for Impairment Allowance Allocation Recorded Investment of Loans (1) Ratio Allowance Allocation Recorded Investment of Loans (1) Ratio (In thousands) (In thousands) Single-family residential $ 62,067 $ 5,487,331 1.1 % $ — $ 72,869 — % Construction - speculative 6,682 130,901 5.5 60 9,159 0.7 Construction - custom 1,695 385,464 0.5 — 360 — Land - acquisition & development 5,592 73,999 7.6 — 3,833 — Land - consumer lot loans 3,077 95,684 3.2 — 12,939 — Multi-family 4,248 911,162 0.5 — 6,124 — Commercial real estate 7,548 563,534 1.4 — 27,802 — Commercial & industrial 17,223 421,816 4.6 — — — HELOC 928 114,393 0.9 — 1,650 — Consumer 3,227 132,590 2.4 — — — $ 112,287 $ 8,316,874 1.4 % $ 60 $ 134,736 — % (1) Excludes acquired loans with discounts sufficient to absorb potential losses and covered loans
Summary of Loans Based on Credit Quality Indicators	The following tables provide information on loans (net of LIP and excluding covered loans) based on credit quality indicators as defined above as of June 30, 2015 and September 30, 2014 . June 30, 2015 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,456,628 $ — $ 90,313 $ — $ — $ 5,546,941 Construction - speculative 114,706 — 3,005 — — 117,711 Construction - custom 204,914 — — — — 204,914 Land - acquisition & development 67,726 — 5,130 — — 72,856 Land - consumer lot loans 102,007 — 429 — — 102,436 Multi-family 1,009,785 — 3,960 — — 1,013,745 Commercial real estate 682,908 5,068 9,984 — — 697,960 Commercial & industrial 411,925 965 38,583 — — 451,473 HELOC 122,626 — 248 — — 122,874 Consumer 205,950 — — — — 205,950 8,379,175 6,033 151,652 — — 8,536,860 Non-impaired acquired loans Single-family residential 12,872 — 23 — — 12,895 Land - acquisition & development 651 — 377 — — 1,028 Land - consumer lot loans 2,355 — 117 — — 2,472 Multi-family 3,692 — — — — 3,692 Commercial real estate 86,529 511 14,502 — — 101,542 Commercial & industrial 54,243 1,228 2,141 — — 57,612 HELOC 6,414 — — — — 6,414 Consumer 2,484 — 413 — — 2,897 169,240 1,739 17,573 — — 188,552 Credit-impaired acquired loans Pool 1 - Construction and land A&D 6,655 — 2,305 — — 8,960 Pool 2 - Single-family residential 320 — — — — 320 Pool 3 - Multi-family — — — — — — Pool 4 - HELOC & other consumer 8,598 — 638 — — 9,236 Pool 5 - Commercial real estate 47,715 — 22,811 — — 70,526 Pool 6 - Commercial & industrial 2,931 — 375 — — 3,306 Total credit impaired acquired loans 66,219 — 26,129 — — 92,348 Total gross loans $ 8,614,634 $ 7,772 $ 195,354 $ — $ — $ 8,817,760 Total grade as a % of total gross loans 97.7 % 0.1 % 2.2 % — % — % September 30, 2014 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,424,624 $ 2,793 $ 130,339 $ — $ — $ 5,557,756 Construction - speculative 81,931 — 5,104 — — 87,035 Construction - custom 192,098 — — — — 192,098 Land - acquisition & development 61,949 — 6,117 — — 68,066 Land - consumer lot loans 107,979 — 610 — — 108,589 Multi-family 887,639 — 4,556 — — 892,195 Commercial real estate 495,892 1,971 31,441 — — 529,304 Commercial & industrial 359,168 14,740 5,265 — — 379,173 HELOC 115,794 — 248 — — 116,042 Consumer 132,444 — 241 — — 132,685 7,859,518 19,504 183,921 — — 8,062,943 Non-impaired acquired loans Single-family residential 11,716 — — — — 11,716 Land - acquisition & development 503 — 402 — — 905 Land - consumer lot loans 2,502 — — — — 2,502 Multi-family 2,999 — — — — 2,999 Commercial real estate 88,940 2,571 6,353 — — 97,864 Commercial & industrial 36,309 13,642 1,375 58 — 51,384 HELOC 8,274 — — — — 8,274 Consumer 5,670 — — — — 5,670 156,913 16,213 8,130 58 — 181,314 Credit-impaired acquired loans Pool 1 - Construction and land A&D 1,251 — 330 — — 1,581 Pool 2 - Single-family residential 325 — — — — 325 Pool 3 - Multi-family — — — — — — Pool 4 - HELOC & other consumer 10,194 — — — — 10,194 Pool 5 - Commercial real estate 48,867 2,143 12,702 — — 63,712 Pool 6 - Commercial & industrial 643 — 2,833 — — 3,476 Total credit impaired acquired loans 61,280 2,143 15,865 — — 79,288 Total gross loans $ 8,077,711 $ 37,860 $ 207,916 $ 58 $ — $ 8,323,545 Total grade as a % of total gross loans 97.2 % 0.4 % 2.4 % — % — % Credit Risk Profile Based on Payment Activity (excludes acquired and covered loans): June 30, 2015 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) Single-family residential $ 5,490,303 99.0 % $ 56,638 1.0 % Construction - speculative 116,949 99.4 762 0.6 Construction - custom 204,559 99.8 355 0.2 Land - acquisition & development 71,471 100.0 — — Land - consumer lot loans 101,128 98.4 1,308 1.6 Multi-family 1,012,250 99.8 786 0.2 Commercial real estate 693,479 99.7 2,852 0.3 Commercial & industrial 450,124 99.8 1,205 0.2 HELOC 121,985 99.3 889 0.7 Consumer 205,437 99.8 513 0.2 $ 8,467,685 99.2 % $ 65,308 0.8 % September 30, 2014 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) Single-family residential $ 5,486,136 98.7 % $ 74,067 1.3 % Construction - speculative 138,583 98.9 1,477 1.1 Construction - custom 385,824 100.0 — — Land - acquisition & development 77,021 99.0 811 1.0 Land - consumer lot loans 105,986 97.6 2,637 2.4 Multi-family 915,544 99.8 1,742 0.2 Commercial real estate 586,230 99.1 5,106 0.9 Commercial & industrial 379,219 100.0 7 — HELOC 115,247 99.3 795 0.7 Consumer 131,801 99.4 789 0.6 $ 8,321,591 99.0 % $ 87,431 1.0 % The following tables provide information on covered loans based on credit quality indicators (defined in Note E ) as of June 30, 2015 and September 30, 2014 : June 30, 2015 Internally Assigned Grade Total Net Loans Pass Special mention Substandard Doubtful Loss (In thousands) Acquired non-impaired loans: Single-family residential $ 15,300 $ — $ 593 $ — $ — $ 15,893 Commercial & industrial — — 28 — — 28 HELOC 9,214 — — — — 9,214 $ 24,514 $ — $ 621 $ — $ — $ 25,135 Total grade as a % of total net loans 97.5 % — % 2.5 % — % — % Acquired credit-impaired loans: Pool 1 - Construction and land A&D $ 151 $ — $ 1,613 $ — $ — $ 1,764 Pool 2 - Single-family residential 14,375 — 331 — — 14,706 Pool 3 - Multi-family 48 — 377 — — 425 Pool 4 - HELOC & other consumer 2,611 — — — — 2,611 Pool 5 - Commercial real estate 23,805 — 11,048 — — 34,853 Pool 6 - Commercial & industrial 394 — 1,276 — — 1,670 $ 41,384 $ — $ 14,645 $ — $ — 56,029 Total covered loans 81,164 Discount (3,853 ) Allowance — Covered loans, net $ 77,311 September 30, 2014 Internally Assigned Grade Total Net Loans Pass Special mention Substandard Doubtful Loss (In thousands) Acquired non-impaired loans: Single-family residential $ 21,311 $ — $ 1,756 $ — $ — $ 23,067 Land - acquisition & development 972 — 392 — — 1,364 Land - consumer lot loans 73 — — — — 73 Multi-family 6,598 — — — — 6,598 Commercial real estate 26,940 115 24,281 — — 51,336 Commercial & industrial 2,801 — 2,691 — — 5,492 HELOC 11,777 — — — — 11,777 Consumer 454 — — — — 454 $ 70,926 $ 115 $ 29,120 $ — $ — $ 100,161 Total grade as a % of total net loans 70.8 % 0.1 % 29.1 % — % — % Acquired credit-impaired loans: Pool 1 - Construction and land A&D $ 8,349 $ — $ 11,912 $ — $ — $ 20,261 Pool 2 - Single-family residential 15,585 — 379 — — 15,964 Pool 3 - Multi-family 52 — 471 — — 523 Pool 4 - HELOC & other consumer 2,804 — 1,173 — — 3,977 Pool 5 - Commercial real estate 33,909 700 29,782 — — 64,391 Pool 6 - Commercial & industrial 3,509 — 3,892 525 — 7,926 $ 64,208 $ 700 $ 47,609 $ 525 $ — 113,042 Total covered loans 213,203 Discount (34,483 ) Allowance (2,244 ) Covered loans, net $ 176,476
Summary of Impaired Loans Based on Type	The following table provides information on impaired loan balances and the related allowances by loan types as of June 30, 2015 and September 30, 2014 : June 30, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) With no related allowance recorded: Single-family residential $ 21,524 $ 24,151 $ — $ 20,724 Construction - speculative 613 808 — 615 Construction - custom 355 355 — 178 Land - acquisition & development 680 1,223 — 683 Land - consumer lot loans 1,101 1,187 — 969 Multi-family 1,531 1,531 — 1,138 Commercial real estate 10,416 14,797 — 9,795 Commercial & industrial 4,340 18,276 — 5,664 HELOC 1,008 1,819 — 905 Consumer 414 627 — 414 41,982 64,774 — 41,085 With an allowance recorded: Single-family residential 275,179 279,043 8,057 275,889 Construction - speculative 6,371 7,161 — 6,389 Construction - custom — — — — Land - acquisition & development 3,536 4,476 — 3,571 Land - consumer lot loans 11,540 11,805 — 11,627 Multi-family 3,843 3,843 — 3,853 Commercial real estate 19,251 21,206 — 19,962 Commercial & industrial — — — — HELOC 1,394 1,394 — 1,394 Consumer 120 291 — 121 321,234 329,219 8,057 (1) 322,806 Total: Single-family residential 296,703 303,194 8,057 296,613 Construction - speculative 6,984 7,969 — 7,004 Construction - custom 355 355 — 178 Land - acquisition & development 4,216 5,699 — 4,254 Land - consumer lot loans 12,641 12,992 — 12,596 Multi-family 5,374 5,374 — 4,991 Commercial real estate 29,667 36,003 — 29,757 Commercial & industrial 4,340 18,276 — 5,664 HELOC 2,402 3,213 — 2,299 Consumer 534 918 — 535 $ 363,216 $ 393,993 $ 8,057 (1) $ 363,891 (1) Included in the general reserves. September 30, 2014 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment (In thousands) With no related allowance recorded: Single-family residential $ 24,044 $ 26,628 $ — $ 16,843 Construction - speculative 1,603 2,173 — 1,804 Land - acquisition & development 837 2,325 — 1,038 Land - consumer lot loans 974 1,072 — 713 Multi-family 1,111 1,111 — 327 Commercial real estate 13,234 20,085 — 11,720 Commercial & industrial 3,195 17,166 — 3,900 HELOC 1,019 1,730 — 612 Consumer 663 833 — 517 46,680 73,123 — 37,474 With an allowance recorded: Single-family residential 322,320 327,869 10,527 316,348 Construction - speculative 7,556 7,986 60 7,532 Land - acquisition & development 4,696 5,636 — 4,114 Land - consumer lot loans 13,002 13,385 — 12,858 Multi-family 5,243 5,463 — 4,957 Commercial real estate 34,159 35,028 — 18,572 HELOC 1,486 1,486 — 1,204 Consumer 43 214 — 79 388,505 397,067 10,587 (1) 365,664 Total: Single-family residential 346,364 354,497 10,527 333,191 Construction - speculative 9,159 10,159 60 9,336 Land - acquisition & development 5,533 7,961 — 5,152 Land - consumer lot loans 13,976 14,457 — 13,571 Multi-family 6,354 6,574 — 5,284 Commercial real estate 47,393 55,113 — 30,292 Commercial & industrial 3,195 17,166 — 3,900 HELOC 2,505 3,216 — 1,816 Consumer 706 1,047 — 596 $ 435,185 $ 470,190 $ 10,587 (1) $ 403,138 (1) Includes $60,000 of specific reserves and $10,527,000 included in the general reserves.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value of Assets Measured on Recurring Basis	The following tables present the balance of assets measured at fair value on a recurring basis at June 30, 2015 and September 30, 2014 : Fair Value at June 30, 2015 Level 1 Level 2 Level 3 Total (In thousands) Financial Assets Available-for-sale securities: Equity securities $ 102,447 $ — $ — $ 102,447 Obligations of U.S. government — 529,472 — 529,472 Obligations of states and political subdivisions — 27,275 — 27,275 Corporate debt securities — 528,716 — 528,716 Agency pass-through certificates — 1,328,852 — 1,328,852 Other Commercial MBS — 107,612 — 107,612 Total available-for-sale securities 102,447 2,521,927 — 2,624,374 Bank owned life insurance — 101,720 — 101,720 Interest rate contracts — 5,429 — 5,429 Total financial assets $ 102,447 $ 2,629,076 $ — $ 2,731,523 Financial Liabilities Interest rate contracts — 5,429 — 5,429 Long term borrowing hedge — 3,914 — 3,914 Total financial liabilities $ — $ 9,343 $ — $ 9,343 There were no transfers between, into and/or out of Levels 1, 2 or 3 during the quarter ended June 30, 2015 . Fair Value at September 30, 2014 Level 1 Level 2 Level 3 Total (In thousands) Financial Assets Available-for-sale securities: Equity securities $ 101,387 $ — $ — $ 101,387 Obligations of U.S. government — 731,943 — 731,943 Obligations of states and political subdivisions — 23,681 — 23,681 Obligations of foreign governments — — — — Corporate debt securities — 509,007 — 509,007 Mortgage-backed securities Agency pass-through certificates — 1,584,508 — 1,584,508 Other Commercial MBS — 98,916 — 98,916 Total available-for-sale securities 101,387 2,948,055 — 3,049,442 Interest rate contracts — 2,879 — 2,879 Total financial assets $ 101,387 $ 2,950,934 $ — $ 3,052,321 Financial Liabilities Interest rate contracts — 2,879 — 2,879 Long term borrowing hedge — 268 — 268 Total financial liabilities $ — $ 3,147 $ — $ 3,147
Aggregated Balance of Assets Measured at Estimated Fair Value on a Nonrecurring Basis and Total Losses Resulting from Those Fair Value Adjustments	The following tables present the aggregated balance of assets that were measured at estimated fair value on a nonrecurring basis at June 30, 2015 and June 30, 2014 , and the total losses (gains) resulting from those fair value adjustments for the quarters and nine months ended June 30, 2015 and June 30, 2014 . These estimated fair values are shown gross of estimated selling costs. Nine Months Ended June 30, 2015 Quarter Ended June 30, 2015 Nine Months Ended June 30, 2015 Level 1 Level 2 Level 3 Total Total Losses (Gains) (In thousands) Impaired loans (1) $ — $ — $ 6,735 $ 6,735 $ 3,621 $ 4,201 Covered REO (2) — — 1,950 1,950 (20 ) 168 Real estate held for sale (2) — — 71,831 71,831 2,386 (8,571 ) Balance at end of period $ — $ — $ 80,516 $ 80,516 $ 5,987 $ (4,202 ) (1) The losses represent remeasurements of collateral-dependent loans. (2) The (gains) losses represent net valuation adjustments on real estate held for sale. Nine Months Ended June 30, 2014 Quarter Ended June 30, 2014 Nine Months Ended June 30, 2014 Level 1 Level 2 Level 3 Total Total Losses (Gains) (In thousands) Impaired loans (1) $ — $ — $ 10,156 $ 10,156 $ (775 ) $ (1,311 ) Covered REO (2) — — 8,935 8,935 374 503 Real estate held for sale (2) — — 43,082 43,082 10,400 16,782 Balance at end of period $ — $ — $ 62,173 $ 62,173 $ 9,999 $ 15,974 (1) The gains represents remeasurements of collateral-dependent loans. (2) The losses represent aggregate net writedowns and charge-offs on real estate held for sale.
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. June 30, 2015 September 30, 2014 Level in Fair Value Hierarchy Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (In thousands) Financial assets Cash and cash equivalents 1 $ 349,550 $ 349,550 $ 781,843 $ 781,843 Available-for-sale securities Equity securities 1 102,447 102,447 101,387 101,387 Obligations of U.S. government 2 529,472 529,472 731,943 731,943 Obligations of states and political subdivisions 2 27,275 27,275 23,681 23,681 Corporate debt securities 2 528,716 528,716 509,007 509,007 Mortgage-backed securities Agency pass-through certificates 2 1,328,852 1,328,852 1,584,508 1,584,508 Other Commercial MBS 2 107,612 107,612 98,916 98,916 Total available-for-sale securities 2,624,374 2,624,374 3,049,442 3,049,442 Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 2 1,586,514 1,553,716 1,548,265 1,499,218 Total held-to-maturity securities 1,586,514 1,553,716 1,548,265 1,499,218 Loans receivable 3 8,645,609 9,175,928 8,148,322 8,667,771 Covered loans 3 77,311 81,737 176,476 176,761 FDIC indemnification asset 3 18,783 18,263 36,860 35,976 FHLB and FRB stock 2 103,189 103,189 158,839 158,839 Bank owned life insurance 2 101,720 101,720 — — Other assets - interest rate contracts 2 — 5,429 — 2,879 Financial liabilities Customer accounts 2 10,578,385 9,830,817 10,716,928 9,946,586 FHLB advances 2 1,730,000 1,833,413 1,930,000 2,054,437 Other liabilities - interest rate contracts 2 — 5,429 — 2,879 Other liabilities - long term borrowing hedge 2 — 3,914 — 268 The following table presents the fair value and balance sheet classification of derivatives at June 30, 2015 and September 30, 2014 : Asset Derivatives Liability Derivatives June 30, 2015 September 30, 2014 June 30, 2015 September 30, 2014 Balance Sheet Balance Sheet Balance Sheet Balance Sheet Location Fair Value Location Fair Value Location Fair Value Location Fair Value (In thousands) Interest rate contracts Other assets $ 5,429 Other assets $ 2,879 Other liabilities $ 5,429 Other liabilities $ 2,879 Long term borrowing hedge Other assets — Other assets — Other liabilities 3,914 Other liabilities 268
Reconciliation of Amortized Cost to Fair Value of Available-for-Sale and Held-to-Maturity Securities	The following tables provide a reconciliation of amortized cost to fair value of available-for-sale and held-to-maturity securities as of June 30, 2015 , and September 30, 2014 : June 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 $ 135,967 $ 2,078 $ (460 ) $ 137,585 1.43 % 5 to 10 years 75,441 149 (7 ) 75,583 1.20 Over 10 years 316,929 435 (1,060 ) 316,304 1.31 Equity Securities Within 1 year 500 18 — 518 1.80 1 to 5 years 100,000 1,929 — 101,929 1.90 5 to 10 years — — — — — Corporate bonds due Within 1 year 39,702 283 — 39,985 0.68 1 to 5 years 303,094 1,414 — 304,508 0.81 5 to 10 years 133,306 1,814 (1,647 ) 133,473 1.54 Over 10 years 50,000 750 — 50,750 3.00 Municipal bonds due 1 to 5 years 2,278 — (1 ) 2,277 1.23 5 to 10 years 1,295 — (14 ) 1,281 2.05 Over 10 years 20,387 3,330 — 23,717 6.45 Mortgage-backed securities Agency pass-through certificates 1,316,686 14,988 (2,822 ) 1,328,852 2.58 Other Commercial MBS 107,512 151 (51 ) 107,612 1.48 2,603,097 27,339 (6,062 ) 2,624,374 2.00 Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 1,586,514 6,193 (38,991 ) 1,553,716 3.16 $ 4,189,611 $ 33,532 $ (45,053 ) $ 4,178,090 2.43 % September 30, 2014 Amortized Cost Gross Unrealized Fair Value Yield Gains Losses (In thousands) Available-for-sale securities U.S. government and agency securities due 1 to 5 years $ 171,154 $ 2,585 $ (748 ) $ 172,991 1.26 % 5 to 10 years 203,317 300 (102 ) 203,515 1.45 Over 10 years 354,828 1,028 (419 ) 355,437 1.25 Equity Securities 1 to 5 years 100,500 887 — 101,387 1.90 Corporate bonds due Within 1 year 15,000 75 — 15,075 1.00 1 to 5 years 302,540 2,372 — 304,912 0.71 5 to 10 years 138,201 1,789 (970 ) 139,020 1.43 Over 10 years 50,000 — — 50,000 3.00 Municipal bonds due Over 10 years 20,402 3,279 — 23,681 6.45 Mortgage-backed securities Agency pass-through certificates 1,561,639 24,893 (2,024 ) 1,584,508 2.57 Other Commercial MBS 98,851 65 — 98,916 1.49 3,016,432 37,273 (4,263 ) 3,049,442 1.99 Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 1,548,265 4,855 (53,902 ) 1,499,218 3.13 $ 4,564,697 $ 42,128 $ (58,165 ) $ 4,548,660 2.38 %
Schedule of Unrealized Losses and Fair Value of Securities	The following tables show the unrealized gross losses and fair value of securities as of June 30, 2015 and September 30, 2014 , by length of time that individual securities in each category have been in a continuous loss position. The decline in fair value is attributable to changes in interest rates. Because the Company does not intend to sell these securities and does not consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other than temporarily impaired. June 30, 2015 Less than 12 months 12 months or more Total Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value (In thousands) Corporate bonds due $ (1,022 ) $ 23,978 $ (625 ) $ 34,375 $ (1,647 ) $ 58,353 Municipal bonds due (15 ) 3,558 — — (15 ) 3,558 U.S. government and agency securities due (558 ) 140,285 (969 ) 142,318 (1,527 ) 282,603 Agency pass-through certificates (1,919 ) 454,980 (39,945 ) 1,360,218 (41,864 ) 1,815,198 $ (3,514 ) $ 622,801 $ (41,539 ) $ 1,536,911 $ (45,053 ) $ 2,159,712 September 30, 2014 Less than 12 months 12 months or more Total Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value Unrealized Gross Losses Fair Value (In thousands) Corporate bonds due $ (125 ) $ 24,875 $ (845 ) $ 24,155 $ (970 ) $ 49,030 U.S. government and agency securities due (472 ) 316,578 (797 ) 109,354 (1,269 ) 425,932 Agency pass-through certificates (215 ) 19,212 (55,711 ) 1,509,209 (55,926 ) 1,528,421 $ (812 ) $ 360,665 $ (57,353 ) $ 1,642,718 $ (58,165 ) $ 2,003,383

Covered Assets (Tables)

Covered Assets (Tables)	9 Months Ended
	Jun. 30, 2015
Covered Assets [Abstract]
Schedule of Changes in Carrying Amount and Accretable Yield of Assets	Changes in the net carrying amount and accretable yield for acquired impaired and non-impaired covered loans for the year to date period ended June 30, 2015 and the fiscal year ended September 30, 2014 were as follows: June 30, 2015 Acquired Impaired Acquired Non-impaired Accretable Yield Net Carrying Amount of Loans Accretable Yield Net Carrying Amount of Loans (In thousands) Balance at beginning of period $ 64,534 $ 78,055 $ 10,259 $ 98,422 Transfer to non-covered (23,167 ) (15,866 ) (1,482 ) (33,649 ) Reclassification from nonaccretable balance, net 6,307 — — — Accretion (11,577 ) 11,577 (4,358 ) 4,358 Transfers to REO — (1,893 ) — — Payments received, net — (19,845 ) — (43,848 ) Balance at end of period $ 36,097 $ 52,028 $ 4,419 $ 25,283 September 30, 2014 Acquired Impaired Acquired Non-impaired Accretable Yield Net Carrying Amount of Loans Accretable Yield Carrying Amount of Loans (In thousands) Balance at beginning of period $ 78,277 $ 138,091 $ 17,263 $ 157,856 Reclassification from nonaccretable balance, net 10,186 (2,069 ) — — Accretion (23,929 ) 23,929 (7,004 ) 7,004 Transfers to REO — (8,943 ) — — Payments received, net — (72,953 ) — (66,438 ) Balance at end of period $ 64,534 $ 78,055 $ 10,259 $ 98,422
Schedule of Activity for FDIC Indemnification Asset	The following table shows the year to date activity for the FDIC indemnification asset: June 30, 2015 September 30, 2014 (In thousands) Balance at beginning of fiscal year 2015 and 2014 $ 36,860 $ 64,615 Additions and deletions (1) (1,795 ) 1,795 Payments made (received) 714 (2,502 ) Amortization (17,418 ) (27,850 ) Accretion 422 802 Balance at end of period $ 18,783 $ 36,860 (1) reclassification of ALLL allowance due to changes in cash flows
Summary of Loans Based on Credit Quality Indicators	The following tables provide information on loans (net of LIP and excluding covered loans) based on credit quality indicators as defined above as of June 30, 2015 and September 30, 2014 . June 30, 2015 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,456,628 $ — $ 90,313 $ — $ — $ 5,546,941 Construction - speculative 114,706 — 3,005 — — 117,711 Construction - custom 204,914 — — — — 204,914 Land - acquisition & development 67,726 — 5,130 — — 72,856 Land - consumer lot loans 102,007 — 429 — — 102,436 Multi-family 1,009,785 — 3,960 — — 1,013,745 Commercial real estate 682,908 5,068 9,984 — — 697,960 Commercial & industrial 411,925 965 38,583 — — 451,473 HELOC 122,626 — 248 — — 122,874 Consumer 205,950 — — — — 205,950 8,379,175 6,033 151,652 — — 8,536,860 Non-impaired acquired loans Single-family residential 12,872 — 23 — — 12,895 Land - acquisition & development 651 — 377 — — 1,028 Land - consumer lot loans 2,355 — 117 — — 2,472 Multi-family 3,692 — — — — 3,692 Commercial real estate 86,529 511 14,502 — — 101,542 Commercial & industrial 54,243 1,228 2,141 — — 57,612 HELOC 6,414 — — — — 6,414 Consumer 2,484 — 413 — — 2,897 169,240 1,739 17,573 — — 188,552 Credit-impaired acquired loans Pool 1 - Construction and land A&D 6,655 — 2,305 — — 8,960 Pool 2 - Single-family residential 320 — — — — 320 Pool 3 - Multi-family — — — — — — Pool 4 - HELOC & other consumer 8,598 — 638 — — 9,236 Pool 5 - Commercial real estate 47,715 — 22,811 — — 70,526 Pool 6 - Commercial & industrial 2,931 — 375 — — 3,306 Total credit impaired acquired loans 66,219 — 26,129 — — 92,348 Total gross loans $ 8,614,634 $ 7,772 $ 195,354 $ — $ — $ 8,817,760 Total grade as a % of total gross loans 97.7 % 0.1 % 2.2 % — % — % September 30, 2014 Internally Assigned Grade Total Pass Special mention Substandard Doubtful Loss Gross Loans (In thousands) Non-acquired loans Single-family residential $ 5,424,624 $ 2,793 $ 130,339 $ — $ — $ 5,557,756 Construction - speculative 81,931 — 5,104 — — 87,035 Construction - custom 192,098 — — — — 192,098 Land - acquisition & development 61,949 — 6,117 — — 68,066 Land - consumer lot loans 107,979 — 610 — — 108,589 Multi-family 887,639 — 4,556 — — 892,195 Commercial real estate 495,892 1,971 31,441 — — 529,304 Commercial & industrial 359,168 14,740 5,265 — — 379,173 HELOC 115,794 — 248 — — 116,042 Consumer 132,444 — 241 — — 132,685 7,859,518 19,504 183,921 — — 8,062,943 Non-impaired acquired loans Single-family residential 11,716 — — — — 11,716 Land - acquisition & development 503 — 402 — — 905 Land - consumer lot loans 2,502 — — — — 2,502 Multi-family 2,999 — — — — 2,999 Commercial real estate 88,940 2,571 6,353 — — 97,864 Commercial & industrial 36,309 13,642 1,375 58 — 51,384 HELOC 8,274 — — — — 8,274 Consumer 5,670 — — — — 5,670 156,913 16,213 8,130 58 — 181,314 Credit-impaired acquired loans Pool 1 - Construction and land A&D 1,251 — 330 — — 1,581 Pool 2 - Single-family residential 325 — — — — 325 Pool 3 - Multi-family — — — — — — Pool 4 - HELOC & other consumer 10,194 — — — — 10,194 Pool 5 - Commercial real estate 48,867 2,143 12,702 — — 63,712 Pool 6 - Commercial & industrial 643 — 2,833 — — 3,476 Total credit impaired acquired loans 61,280 2,143 15,865 — — 79,288 Total gross loans $ 8,077,711 $ 37,860 $ 207,916 $ 58 $ — $ 8,323,545 Total grade as a % of total gross loans 97.2 % 0.4 % 2.4 % — % — % Credit Risk Profile Based on Payment Activity (excludes acquired and covered loans): June 30, 2015 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) Single-family residential $ 5,490,303 99.0 % $ 56,638 1.0 % Construction - speculative 116,949 99.4 762 0.6 Construction - custom 204,559 99.8 355 0.2 Land - acquisition & development 71,471 100.0 — — Land - consumer lot loans 101,128 98.4 1,308 1.6 Multi-family 1,012,250 99.8 786 0.2 Commercial real estate 693,479 99.7 2,852 0.3 Commercial & industrial 450,124 99.8 1,205 0.2 HELOC 121,985 99.3 889 0.7 Consumer 205,437 99.8 513 0.2 $ 8,467,685 99.2 % $ 65,308 0.8 % September 30, 2014 Performing Loans Non-Performing Loans Amount % of Total Gross Loans Amount % of Total Gross Loans (In thousands) Single-family residential $ 5,486,136 98.7 % $ 74,067 1.3 % Construction - speculative 138,583 98.9 1,477 1.1 Construction - custom 385,824 100.0 — — Land - acquisition & development 77,021 99.0 811 1.0 Land - consumer lot loans 105,986 97.6 2,637 2.4 Multi-family 915,544 99.8 1,742 0.2 Commercial real estate 586,230 99.1 5,106 0.9 Commercial & industrial 379,219 100.0 7 — HELOC 115,247 99.3 795 0.7 Consumer 131,801 99.4 789 0.6 $ 8,321,591 99.0 % $ 87,431 1.0 % The following tables provide information on covered loans based on credit quality indicators (defined in Note E ) as of June 30, 2015 and September 30, 2014 : June 30, 2015 Internally Assigned Grade Total Net Loans Pass Special mention Substandard Doubtful Loss (In thousands) Acquired non-impaired loans: Single-family residential $ 15,300 $ — $ 593 $ — $ — $ 15,893 Commercial & industrial — — 28 — — 28 HELOC 9,214 — — — — 9,214 $ 24,514 $ — $ 621 $ — $ — $ 25,135 Total grade as a % of total net loans 97.5 % — % 2.5 % — % — % Acquired credit-impaired loans: Pool 1 - Construction and land A&D $ 151 $ — $ 1,613 $ — $ — $ 1,764 Pool 2 - Single-family residential 14,375 — 331 — — 14,706 Pool 3 - Multi-family 48 — 377 — — 425 Pool 4 - HELOC & other consumer 2,611 — — — — 2,611 Pool 5 - Commercial real estate 23,805 — 11,048 — — 34,853 Pool 6 - Commercial & industrial 394 — 1,276 — — 1,670 $ 41,384 $ — $ 14,645 $ — $ — 56,029 Total covered loans 81,164 Discount (3,853 ) Allowance — Covered loans, net $ 77,311 September 30, 2014 Internally Assigned Grade Total Net Loans Pass Special mention Substandard Doubtful Loss (In thousands) Acquired non-impaired loans: Single-family residential $ 21,311 $ — $ 1,756 $ — $ — $ 23,067 Land - acquisition & development 972 — 392 — — 1,364 Land - consumer lot loans 73 — — — — 73 Multi-family 6,598 — — — — 6,598 Commercial real estate 26,940 115 24,281 — — 51,336 Commercial & industrial 2,801 — 2,691 — — 5,492 HELOC 11,777 — — — — 11,777 Consumer 454 — — — — 454 $ 70,926 $ 115 $ 29,120 $ — $ — $ 100,161 Total grade as a % of total net loans 70.8 % 0.1 % 29.1 % — % — % Acquired credit-impaired loans: Pool 1 - Construction and land A&D $ 8,349 $ — $ 11,912 $ — $ — $ 20,261 Pool 2 - Single-family residential 15,585 — 379 — — 15,964 Pool 3 - Multi-family 52 — 471 — — 523 Pool 4 - HELOC & other consumer 2,804 — 1,173 — — 3,977 Pool 5 - Commercial real estate 33,909 700 29,782 — — 64,391 Pool 6 - Commercial & industrial 3,509 — 3,892 525 — 7,926 $ 64,208 $ 700 $ 47,609 $ 525 $ — 113,042 Total covered loans 213,203 Discount (34,483 ) Allowance (2,244 ) Covered loans, net $ 176,476
Analysis of Age of Purchased Non-Credit Impaired Loans In Past Due Status	The following tables provide an analysis of the age of acquired non credit-impaired covered loans in past due status as of June 30, 2015 and September 30, 2014 : June 30, 2015 Amount of Loans Net of LIP & Chg.-Offs Days Delinquent Based on $ Amount of Loans % based on $ Type of Loans Current 30 60 90 Total Past Due Single-family residential $ 15,893 $ 15,300 $ — $ 214 $ 379 $ 593 3.73 % Commercial & industrial 28 28 — — — — — HELOC 9,214 9,204 10 — — 10 0.11 $ 25,135 $ 24,532 $ 10 $ 214 $ 379 $ 603 2.40 % September 30, 2014 Amount of Loans Net of LIP & Chg.-Offs Days Delinquent Based on $ Amount of Loans % based on $ Type of Loans Current 30 60 90 Total Past Due Single-family residential $ 23,067 $ 22,391 $ 230 $ 40 $ 406 $ 676 2.93 % Land - acquisition & development 1,364 1,328 — — 36 36 2.64 Land - consumer lot loans 73 73 — — — — — Multi-family 6,598 5,502 — — 1,096 1,096 16.61 Commercial real estate 51,336 51,336 — — — — — Commercial & industrial 5,492 5,492 — — — — — HELOC 11,777 11,777 — — — — — Consumer 454 443 11 — — 11 2.42 $ 100,161 $ 98,342 $ 241 $ 40 $ 1,538 $ 1,819 1.82 %

Derivatives and Hedging Activ23

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Fair Value and Balance Sheet Classification	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. June 30, 2015 September 30, 2014 Level in Fair Value Hierarchy Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (In thousands) Financial assets Cash and cash equivalents 1 $ 349,550 $ 349,550 $ 781,843 $ 781,843 Available-for-sale securities Equity securities 1 102,447 102,447 101,387 101,387 Obligations of U.S. government 2 529,472 529,472 731,943 731,943 Obligations of states and political subdivisions 2 27,275 27,275 23,681 23,681 Corporate debt securities 2 528,716 528,716 509,007 509,007 Mortgage-backed securities Agency pass-through certificates 2 1,328,852 1,328,852 1,584,508 1,584,508 Other Commercial MBS 2 107,612 107,612 98,916 98,916 Total available-for-sale securities 2,624,374 2,624,374 3,049,442 3,049,442 Held-to-maturity securities Mortgage-backed securities Agency pass-through certificates 2 1,586,514 1,553,716 1,548,265 1,499,218 Total held-to-maturity securities 1,586,514 1,553,716 1,548,265 1,499,218 Loans receivable 3 8,645,609 9,175,928 8,148,322 8,667,771 Covered loans 3 77,311 81,737 176,476 176,761 FDIC indemnification asset 3 18,783 18,263 36,860 35,976 FHLB and FRB stock 2 103,189 103,189 158,839 158,839 Bank owned life insurance 2 101,720 101,720 — — Other assets - interest rate contracts 2 — 5,429 — 2,879 Financial liabilities Customer accounts 2 10,578,385 9,830,817 10,716,928 9,946,586 FHLB advances 2 1,730,000 1,833,413 1,930,000 2,054,437 Other liabilities - interest rate contracts 2 — 5,429 — 2,879 Other liabilities - long term borrowing hedge 2 — 3,914 — 268 The following table presents the fair value and balance sheet classification of derivatives at June 30, 2015 and September 30, 2014 : Asset Derivatives Liability Derivatives June 30, 2015 September 30, 2014 June 30, 2015 September 30, 2014 Balance Sheet Balance Sheet Balance Sheet Balance Sheet Location Fair Value Location Fair Value Location Fair Value Location Fair Value (In thousands) Interest rate contracts Other assets $ 5,429 Other assets $ 2,879 Other liabilities $ 5,429 Other liabilities $ 2,879 Long term borrowing hedge Other assets — Other assets — Other liabilities 3,914 Other liabilities 268

Summary of Significant Accoun24

Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans in process	$ 438,941	$ 346,172
Loans and Leases Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans in process	$ 686,134	$ 583,838

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) - Bank of America, National Association [Member] $ in Thousands	Sep. 30, 2014USD ($)branch	May. 02, 2014branch	Dec. 06, 2013branch	Oct. 31, 2013branch
Business Acquisition [Line Items]
Number of branches acquired (in branches) | branch	74
Customer accounts	$ 1,853,798
Loans receivable, net	12,881
Property and equipment, net	$ 25,097
Premium on deposits	1.99%
Cash	$ 1,776,660
Core deposit intangible	11,040
Goodwill	$ 31,225
New Mexico [Member]
Business Acquisition [Line Items]
Number of branches acquired (in branches) | branch				11
Washington, Oregon, and Idaho [Member]
Business Acquisition [Line Items]
Number of branches acquired (in branches) | branch			40
Arizona and Nevada [Member]
Business Acquisition [Line Items]
Number of branches acquired (in branches) | branch		23

Acquisitions - Schedule of Net

Acquisitions - Schedule of Net Liabilities Acquired (Details) - Bank of America, National Association [Member] $ in Thousands	Sep. 30, 2014USD ($)
Assets:
Cash	$ 1,776,660
Loans receivable, net	12,881
Property and equipment, net	25,097
Core deposit intangible	11,040
Goodwill	31,225
Other assets	70
Total Assets	1,856,973
Liabilities:
Customer accounts	1,853,798
Other liabilities	3,175
Total Liabilities	1,856,973
Net assets acquired	$ 0

Dividends (Details)

Dividends (Details) - $ / shares	Jul. 27, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	May. 31, 2015
Dividends Payable [Line Items]
Cash dividends per share (in dollars per share)		$ 0.13	$ 0.1	$ 0.41	$ 0.30
Number of shares authorized						5,000,000
Shares repurchased				4,800,000
Percent of outstanding shares acquired				4.90%
Average cost per share (in dollars per share)				$ 21.52
Subsequent Event [Member]
Dividends Payable [Line Items]
Dividends declared (in dollars per share)	$ 0.13

Loans Receivable (excluding C28

Loans Receivable (excluding Covered Loans) - Schedule of Accounts, Notes, Loans, and Financing Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 9,256,701		$ 8,669,717
Ratio of type of loan to total loans receivable	100.00%		100.00%
Allowance for probable losses	$ 105,611	$ 108,323	$ 112,347	$ 114,150	$ 114,931	$ 116,741
Loans in process	438,941		346,172
Discount on acquired loans	28,399		25,391
Deferred net origination fees	38,141		37,485
Charges against loans receivable	611,092		521,395
Loans receivable, net	8,645,609		8,148,322
Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 5,568,929		$ 5,572,244
Ratio of type of loan to total loans receivable	60.30%		64.20%
Allowance for probable losses	$ 52,004	54,762	$ 62,763	62,360	63,348	64,184
Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 181,668		$ 140,060
Ratio of type of loan to total loans receivable	2.00%		1.60%
Allowance for probable losses	$ 5,933	5,445	$ 6,742	6,387	6,773	8,407
Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 375,425		$ 385,824
Ratio of type of loan to total loans receivable	4.10%		4.50%
Allowance for probable losses	$ 985	968	$ 1,695	1,678	1,599	882
Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 90,252		$ 80,359
Ratio of type of loan to total loans receivable	0.90%		0.90%
Allowance for probable losses	$ 5,772	7,405	$ 5,592	6,955	6,027	9,165
Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 105,463		$ 111,130
Ratio of type of loan to total loans receivable	1.10%		1.30%
Allowance for probable losses	$ 2,999	3,035	$ 3,077	2,862	2,974	3,552
Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,093,374		$ 920,285
Ratio of type of loan to total loans receivable	11.80%		10.60%
Allowance for probable losses	$ 5,035	4,673	$ 4,248	4,141	4,187	3,816
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 981,824		$ 752,957
Ratio of type of loan to total loans receivable	10.60%		8.70%
Allowance for probable losses	$ 7,268	6,734	$ 7,548	6,689	5,924	5,595
Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 512,973		$ 434,088
Ratio of type of loan to total loans receivable	5.50%		5.00%
Allowance for probable losses	$ 21,662	21,146	$ 16,527	18,696	20,403	16,614
HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 137,837		$ 134,455
Ratio of type of loan to total loans receivable	1.50%		1.60%
Allowance for probable losses	$ 864	850	$ 928	1,015	975	1,002
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 208,956		$ 138,315
Ratio of type of loan to total loans receivable	2.20%		1.60%
Allowance for probable losses	$ 3,089	$ 3,305	$ 3,227	$ 3,367	$ 2,721	$ 3,524
Non-Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 8,975,217		$ 8,409,022
Ratio of type of loan to total loans receivable	97.10%		97.20%
Non-Acquired Loans [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 5,549,746		$ 5,560,203
Ratio of type of loan to total loans receivable	60.10%		64.10%
Non-Acquired Loans [Member] | Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 181,668		$ 140,060
Ratio of type of loan to total loans receivable	2.00%		1.60%
Non-Acquired Loans [Member] | Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 375,425		$ 385,824
Ratio of type of loan to total loans receivable	4.10%		4.50%
Non-Acquired Loans [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 87,382		$ 77,832
Ratio of type of loan to total loans receivable	0.90%		0.90%
Non-Acquired Loans [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 102,495		$ 108,623
Ratio of type of loan to total loans receivable	1.10%		1.30%
Non-Acquired Loans [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,089,682		$ 917,286
Ratio of type of loan to total loans receivable	11.80%		10.60%
Non-Acquired Loans [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 808,539		$ 591,336
Ratio of type of loan to total loans receivable	8.70%		6.90%
Non-Acquired Loans [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 451,478		$ 379,226
Ratio of type of loan to total loans receivable	4.90%		4.40%
Non-Acquired Loans [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 122,870		$ 116,042
Ratio of type of loan to total loans receivable	1.30%		1.40%
Non-Acquired Loans [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 205,932		$ 132,590
Ratio of type of loan to total loans receivable	2.20%		1.50%
Acquired Non-Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 189,120		$ 181,355
Ratio of type of loan to total loans receivable	1.90%		2.00%
Acquired Non-Impaired Loans [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 12,895		$ 11,716
Ratio of type of loan to total loans receivable	0.10%		0.10%
Acquired Non-Impaired Loans [Member] | Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0		$ 0
Ratio of type of loan to total loans receivable	0.00%		0.00%
Acquired Non-Impaired Loans [Member] | Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0		$ 0
Ratio of type of loan to total loans receivable	0.00%		0.00%
Acquired Non-Impaired Loans [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,028		$ 905
Ratio of type of loan to total loans receivable	0.00%		0.00%
Acquired Non-Impaired Loans [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 2,472		$ 2,507
Ratio of type of loan to total loans receivable	0.00%		0.00%
Acquired Non-Impaired Loans [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 3,692		$ 2,999
Ratio of type of loan to total loans receivable	0.00%		0.00%
Acquired Non-Impaired Loans [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 102,089		$ 97,898
Ratio of type of loan to total loans receivable	1.10%		1.10%
Acquired Non-Impaired Loans [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 57,614		$ 51,386
Ratio of type of loan to total loans receivable	0.60%		0.60%
Acquired Non-Impaired Loans [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 6,414		$ 8,274
Ratio of type of loan to total loans receivable	0.10%		0.10%
Acquired Non-Impaired Loans [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 2,916		$ 5,670
Ratio of type of loan to total loans receivable	0.00%		0.10%
Credit Impaired Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 92,364		$ 79,340
Ratio of type of loan to total loans receivable	1.00%		0.80%
Credit Impaired Acquired Loans [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 6,288		$ 325
Ratio of type of loan to total loans receivable	0.10%		0.00%
Credit Impaired Acquired Loans [Member] | Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0		$ 0
Ratio of type of loan to total loans receivable	0.00%		0.00%
Credit Impaired Acquired Loans [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 1,842		$ 1,622
Ratio of type of loan to total loans receivable	0.00%		0.00%
Credit Impaired Acquired Loans [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 496		$ 0
Ratio of type of loan to total loans receivable	0.00%		0.00%
Credit Impaired Acquired Loans [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 0		$ 0
Ratio of type of loan to total loans receivable	0.00%		0.00%
Credit Impaired Acquired Loans [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 71,196		$ 63,723
Ratio of type of loan to total loans receivable	0.80%		0.70%
Credit Impaired Acquired Loans [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 3,881		$ 3,476
Ratio of type of loan to total loans receivable	0.00%		0.00%
Credit Impaired Acquired Loans [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 8,553		$ 10,139
Ratio of type of loan to total loans receivable	0.10%		0.10%
Credit Impaired Acquired Loans [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 108		$ 55
Ratio of type of loan to total loans receivable	0.00%		0.00%

Loans Receivable (excluding C29

Loans Receivable (excluding Covered Loans) - Schedule of Changes in the Accretable Yield for Acquired Loans (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretion, carrying amount of loans	$ 422		$ 802
Credit Impaired Acquired Loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period, accretable yield	32,591	$ 37,236	37,236
Balance at beginning of period, carrying amount of loans	57,771	69,718	69,718
Reclassification from nonaccretable balance, net, accretable yield		(7,300)
Reclassification from nonaccretable balance, net, carrying value of loans		0
Transfer from covered loans, accretable yield	23,167
Transfer from covered loans, carrying amount of loans	15,866
Additions, accretable yield	0
Additions, carrying amount of loans	0
Accretion, accretable yield	(11,501)	(8,884)
Accretion, carrying amount of loans	11,501	8,884
Transfers to REO, accretable yield	0	0
Transfers to REO, carrying amount of loans	(458)	(1,188)
Payments received, net, accretable yield	0	0
Payments received, net, carrying amount of loans	(18,140)	(17,616)
Balance at end of period, accretable yield	44,257	35,652	32,591
Balance at end of period, carrying amount of loans	66,540	59,798	57,771
Acquired Non-Impaired Loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period, accretable yield	4,254	4,977	4,977
Balance at beginning of period, carrying amount of loans	177,440	245,373	245,373
Reclassification from nonaccretable balance, net, accretable yield		0
Reclassification from nonaccretable balance, net, carrying value of loans		0
Transfer from covered loans, accretable yield	1,482
Transfer from covered loans, carrying amount of loans	33,649
Additions, accretable yield	346
Additions, carrying amount of loans	0
Accretion, accretable yield	(2,427)	(606)
Accretion, carrying amount of loans	2,427	606
Transfers to REO, accretable yield	0	0
Transfers to REO, carrying amount of loans	0	(4,710)
Payments received, net, accretable yield	0	0
Payments received, net, carrying amount of loans	(27,556)	(48,988)
Balance at end of period, accretable yield	3,655	4,371	4,254
Balance at end of period, carrying amount of loans	$ 185,960	$ 192,281	$ 177,440

Loans Receivable (excluding C30

Loans Receivable (excluding Covered Loans) - Loans on Non-accrual Status (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 65,308	$ 87,431
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	100.00%	100.00%
Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 56,638	$ 74,067
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	86.70%	84.80%
Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 762	$ 1,477
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.20%	1.70%
Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 355	$ 0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.50%	0.00%
Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 0	$ 811
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.00%	0.90%
Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 1,308	$ 2,637
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	2.00%	3.00%
Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 786	$ 1,742
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.20%	2.00%
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 2,852	$ 5,106
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	4.40%	5.80%
Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 1,205	$ 7
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.80%	0.00%
HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 889	$ 795
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.40%	0.90%
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual of interest	$ 513	$ 789
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.80%	0.90%

Loans Receivable (excluding C31

Loans Receivable (excluding Covered Loans) - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 5,272
Impaired, interest lost on nonaccrual loans	2,421
Recorded investment, less than 90 days past due, classified as substandard	$ 8,731,344	$ 8,203,280
Basis point reduction, minimum	100.00%
Basis point reduction, maximum	200.00%
Percentage of restructured loans	85.70%
Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term for payment and rate reduction	6 months
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term for payment and rate reduction	12 months
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment, less than 90 days past due, classified as substandard	$ 94,346

Loans Receivable (excluding C32

Loans Receivable (excluding Covered Loans) - Loans Receivable, Analysis of Age of Loans in Past Due Status (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 8,817,760	$ 8,323,544
Current	8,731,344	8,203,280
Past due	$ 86,416	$ 120,264
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.98%	1.44%
Financing Receivables, 1 to 29 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	$ 18,350	$ 19,762
Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	9,724	27,907
Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	58,342	72,595
Non-Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	8,536,860	8,063,364
Current	8,455,606	7,947,551
Past due	$ 81,254	$ 115,813
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.95%	1.44%
Non-Acquired Loans [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 5,546,941	$ 5,557,753
Current	5,473,728	5,467,239
Past due	$ 73,213	$ 90,514
Ratio of past due loans to total loans, net of charge-offs and LIPs	1.32%	1.63%
Non-Acquired Loans [Member] | Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 117,711	$ 87,035
Current	117,711	87,035
Past due	$ 0	$ 0
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.00%	0.00%
Non-Acquired Loans [Member] | Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 204,914	$ 192,098
Current	204,140	191,262
Past due	$ 774	$ 836
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.38%	0.44%
Non-Acquired Loans [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 72,856	$ 68,066
Current	72,429	67,911
Past due	$ 427	$ 155
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.59%	0.23%
Non-Acquired Loans [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 102,436	$ 108,589
Current	99,717	104,571
Past due	$ 2,719	$ 4,018
Ratio of past due loans to total loans, net of charge-offs and LIPs	2.65%	3.70%
Non-Acquired Loans [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 1,013,745	$ 892,196
Current	1,012,704	891,372
Past due	$ 1,041	$ 824
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.10%	0.09%
Non-Acquired Loans [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 697,960	$ 529,453
Current	696,678	513,409
Past due	$ 1,282	$ 16,044
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.18%	3.03%
Non-Acquired Loans [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 451,473	$ 379,226
Current	451,404	377,848
Past due	$ 69	$ 1,378
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.02%	0.36%
Non-Acquired Loans [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 122,874	$ 116,262
Current	121,836	115,262
Past due	$ 1,038	$ 1,000
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.84%	0.86%
Non-Acquired Loans [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 205,950	$ 132,686
Current	205,259	131,642
Past due	$ 691	$ 1,044
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.34%	0.79%
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	$ 17,267	$ 19,477
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	14,525	15,926
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	310	836
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	427	155
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	595	1,246
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	205
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	421	67
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	69	53
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	401	335
Non-Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	519	654
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	9,491	26,449
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	8,585	9,139
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	109	0
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	85	304
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	421	16
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	57	15,118
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	1,318
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	62	292
Non-Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	172	262
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	54,496	69,887
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	50,103	65,449
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	355	0
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	2,039	2,468
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	620	603
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	804	859
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	7
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	575	373
Non-Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	128
Acquired Non-Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	188,552	180,892
Current	187,338	178,945
Past due	$ 1,214	$ 1,947
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.64%	1.08%
Acquired Non-Impaired Loans [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 12,895	$ 11,716
Current	12,872	11,693
Past due	$ 23	$ 23
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.18%	0.20%
Acquired Non-Impaired Loans [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 1,028	$ 905
Current	1,028	905
Past due	$ 0	$ 0
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.00%	0.00%
Acquired Non-Impaired Loans [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 2,472	$ 2,502
Current	2,339	2,132
Past due	$ 133	$ 370
Ratio of past due loans to total loans, net of charge-offs and LIPs	5.38%	14.79%
Acquired Non-Impaired Loans [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 3,692	$ 2,999
Current	3,692	2,999
Past due	$ 0	$ 0
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.00%	0.00%
Acquired Non-Impaired Loans [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 101,542	$ 97,715
Current	101,369	96,948
Past due	$ 173	$ 767
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.17%	0.78%
Acquired Non-Impaired Loans [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 57,612	$ 51,329
Current	57,574	51,229
Past due	$ 38	$ 100
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.07%	0.19%
Acquired Non-Impaired Loans [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 6,414	$ 8,056
Current	5,973	8,056
Past due	$ 441	$ 0
Ratio of past due loans to total loans, net of charge-offs and LIPs	6.88%	0.00%
Acquired Non-Impaired Loans [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 2,897	$ 5,670
Current	2,491	4,983
Past due	$ 406	$ 687
Ratio of past due loans to total loans, net of charge-offs and LIPs	14.01%	12.12%
Acquired Non-Impaired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	$ 272	$ 126
Acquired Non-Impaired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	104
Acquired Non-Impaired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	224	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	48	22
Acquired Non-Impaired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	233	474
Acquired Non-Impaired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	16	370
Acquired Non-Impaired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	100
Acquired Non-Impaired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	217	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	4
Acquired Non-Impaired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	709	1,347
Acquired Non-Impaired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	23	23
Acquired Non-Impaired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	117	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	173	663
Acquired Non-Impaired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	38	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Acquired Non-Impaired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	358	661
Credit Impaired Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	92,348	79,288
Current	88,400	76,784
Past due	$ 3,948	$ 2,504
Ratio of past due loans to total loans, net of charge-offs and LIPs	4.28%	3.16%
Credit Impaired Acquired Loans [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 6,284	$ 325
Current	6,284	325
Past due	$ 0	$ 0
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.00%	0.00%
Credit Impaired Acquired Loans [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 1,842	$ 1,581
Current	771	1,581
Past due	$ 1,071	$ 0
Ratio of past due loans to total loans, net of charge-offs and LIPs	58.14%	0.00%
Credit Impaired Acquired Loans [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 495
Current	495
Past due	0
Credit Impaired Acquired Loans [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	71,189	$ 63,713
Current	69,448	61,713
Past due	$ 1,741	$ 2,000
Ratio of past due loans to total loans, net of charge-offs and LIPs	2.45%	3.14%
Credit Impaired Acquired Loans [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 3,881	$ 3,477
Current	3,058	3,470
Past due	$ 823	$ 7
Ratio of past due loans to total loans, net of charge-offs and LIPs	21.21%	0.20%
Credit Impaired Acquired Loans [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 8,549	$ 10,138
Current	8,236	9,641
Past due	$ 313	$ 497
Ratio of past due loans to total loans, net of charge-offs and LIPs	3.66%	4.90%
Credit Impaired Acquired Loans [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans, net of charge-offs and LIP	$ 108	$ 54
Current	108	54
Past due	$ 0	$ 0
Ratio of past due loans to total loans, net of charge-offs and LIPs	0.00%	0.00%
Credit Impaired Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	$ 811	$ 159
Credit Impaired Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	203	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	608	152
Credit Impaired Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	7
Credit Impaired Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 1 to 29 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	984
Credit Impaired Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	909
Credit Impaired Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	75
Credit Impaired Acquired Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	3,137	1,361
Credit Impaired Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	868	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	1,133	939
Credit Impaired Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	823	0
Credit Impaired Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	313	422
Credit Impaired Acquired Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	$ 0	$ 0

Loans Receivable (excluding C33

Loans Receivable (excluding Covered Loans) - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)contract	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)contract
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts (in contracts) | contract	10	58	71	221
Pre-modification outstanding recorded investment	$ 1,814	$ 13,420	$ 19,308	$ 51,500
Post-modification outstanding recorded investment	$ 1,814	$ 13,420	$ 19,308	$ 51,500
Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts (in contracts) | contract	8	48	57	199
Pre-modification outstanding recorded investment	$ 1,611	$ 10,693	$ 13,875	$ 45,132
Post-modification outstanding recorded investment	$ 1,611	$ 10,693	$ 13,875	$ 45,132
Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts (in contracts) | contract			2	0
Pre-modification outstanding recorded investment			$ 718	$ 0
Post-modification outstanding recorded investment			$ 718	$ 0
Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts (in contracts) | contract			2	0
Pre-modification outstanding recorded investment			$ 532	$ 0
Post-modification outstanding recorded investment			$ 532	$ 0
Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts (in contracts) | contract	0	3
Pre-modification outstanding recorded investment	$ 0	$ 756
Post-modification outstanding recorded investment	$ 0	$ 756
Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts (in contracts) | contract	2	5	6	10
Pre-modification outstanding recorded investment	$ 203	$ 573	$ 923	$ 1,746
Post-modification outstanding recorded investment	$ 203	$ 573	$ 923	$ 1,746
Multi-Family Housing Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts (in contracts) | contract			0	2
Pre-modification outstanding recorded investment			$ 0	$ 1,201
Post-modification outstanding recorded investment			$ 0	$ 1,201
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts (in contracts) | contract	0	2	3	3
Pre-modification outstanding recorded investment	$ 0	$ 1,398	$ 3,175	$ 2,197
Post-modification outstanding recorded investment	$ 0	$ 1,398	$ 3,175	$ 2,197
HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts (in contracts) | contract			0	1
Pre-modification outstanding recorded investment			$ 0	$ 261
Post-modification outstanding recorded investment			$ 0	$ 261
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts (in contracts) | contract			1	3
Pre-modification outstanding recorded investment			$ 85	$ 207
Post-modification outstanding recorded investment			$ 85	$ 207

Loans Receivable (excluding C34

Loans Receivable (excluding Covered Loans) - Loan Modifications (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)contract	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)contract
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	11	19	26	47
Recorded investment	$ 1,895	$ 3,327	$ 4,320	$ 9,821
Single-Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	9	17	19	42
Recorded investment	$ 1,594	$ 3,088	$ 3,329	$ 9,206
Land - Consumer Lot Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	2	1	7	4
Recorded investment	$ 301	$ 69	$ 991	$ 445
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts (in contracts) | contract	0	1	0	1
Recorded investment	$ 0	$ 170	$ 0	$ 170

Allowance for Losses on Loans -

Allowance for Losses on Loans - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	$ 108,323	$ 114,931	$ 112,347	$ 116,741
FinancingReceivableAllowanceForCreditLossesWriteOffs	6,551	3,400	11,677	12,986
Recoveries	6,238	5,619	15,329	22,745
Provision & Transfers	(2,399)	(3,000)	(10,388)	(12,350)
Ending Allowance	105,611	114,150	105,611	114,150
Single-Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	54,762	63,348	62,763	64,184
FinancingReceivableAllowanceForCreditLossesWriteOffs	1,698	2,530	4,801	7,307
Recoveries	3,878	4,717	10,553	15,631
Provision & Transfers	(4,938)	(3,175)	(16,511)	(10,148)
Ending Allowance	52,004	62,360	52,004	62,360
Construction - Speculative [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	5,445	6,773	6,742	8,407
FinancingReceivableAllowanceForCreditLossesWriteOffs	0	0	388	938
Recoveries	0	2	75	97
Provision & Transfers	488	(388)	(496)	(1,179)
Ending Allowance	5,933	6,387	5,933	6,387
Construction - Custom [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	968	1,599	1,695	882
FinancingReceivableAllowanceForCreditLossesWriteOffs	0	0	0	0
Recoveries	0	0	0	0
Provision & Transfers	17	79	(710)	796
Ending Allowance	985	1,678	985	1,678
Land - Acquisition & Development [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	7,405	6,027	5,592	9,165
FinancingReceivableAllowanceForCreditLossesWriteOffs	0	0	38	541
Recoveries	1	85	206	823
Provision & Transfers	(1,634)	843	12	(2,492)
Ending Allowance	5,772	6,955	5,772	6,955
Land - Consumer Lot Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	3,035	2,974	3,077	3,552
FinancingReceivableAllowanceForCreditLossesWriteOffs	276	86	363	559
Recoveries	187	0	221	22
Provision & Transfers	53	(26)	64	(153)
Ending Allowance	2,999	2,862	2,999	2,862
Multi-Family [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	4,673	4,187	4,248	3,816
FinancingReceivableAllowanceForCreditLossesWriteOffs	0	0	0	0
Recoveries	0	0	220	0
Provision & Transfers	362	(46)	567	325
Ending Allowance	5,035	4,141	5,035	4,141
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	6,734	5,924	7,548	5,595
FinancingReceivableAllowanceForCreditLossesWriteOffs	1,592	32	1,619	105
Recoveries	230	24	711	24
Provision & Transfers	1,896	773	628	1,175
Ending Allowance	7,268	6,689	7,268	6,689
Commercial & Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	21,146	20,403	16,527	16,614
FinancingReceivableAllowanceForCreditLossesWriteOffs	2,106	38	2,461	730
Recoveries	896	4	948	3,277
Provision & Transfers	1,726	(1,673)	6,648	(465)
Ending Allowance	21,662	18,696	21,662	18,696
HELOC [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	850	975	928	1,002
FinancingReceivableAllowanceForCreditLossesWriteOffs	26	18	26	18
Recoveries	1	0	1	0
Provision & Transfers	39	58	(39)	31
Ending Allowance	864	1,015	864	1,015
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Allowance	3,305	2,721	3,227	3,524
FinancingReceivableAllowanceForCreditLossesWriteOffs	853	696	1,981	2,788
Recoveries	1,045	787	2,394	2,871
Provision & Transfers	(408)	555	(551)	(240)
Ending Allowance	$ 3,089	$ 3,367	$ 3,089	$ 3,367

Allowance for Losses on Loans36

Allowance for Losses on Loans - Additional Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)charge-off	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Sep. 30, 2014USD ($)	Mar. 31, 2015USD ($)	Mar. 31, 2014USD ($)	Sep. 30, 2013USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for (reversal of) loan losses	$ (1,932,000)	$ (3,000,000)	$ (11,381,000)	$ (11,936,000)
Number of charge-offs experienced | charge-off		2
Reversal in allowance				2,399,000
Adjustments, net					$ 2,910,000
Allowance	2,366,000		2,366,000
Loans receivable, gross	9,256,701,000		9,256,701,000		8,669,717,000
Nonaccrual of interest	65,308,000		65,308,000		87,431,000
Acquired loans subject to general allowance	33,573,000		33,573,000
Charge-offs, net of (recoveries)	313,000	$ (2,219,000)
Allowance for probable losses	105,611,000	$ 114,150,000	105,611,000	114,150,000	112,347,000	$ 108,323,000	$ 114,931,000	$ 116,741,000
Unfunded Loan Commitment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for (reversal of) loan losses				$ 467,000
Loans Collectively Evaluated for Impairment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	8,478,557,000		8,478,557,000		8,316,874,000
Allowance for probable losses	105,611,000		105,611,000		112,287,000
Loans Individually Evaluated for Impairment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	88,008,000		88,008,000		134,736,000
Allowance for probable losses	0		0		60,000
Nonperforming Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 128,883,000		$ 128,883,000		$ 147,311,000
Total grade as a % of total net loans	0.90%		0.90%		1.00%
Nonaccrual of interest	$ 65,308,000		$ 65,308,000		$ 87,431,000

Allowance for Losses on Loans37

Allowance for Losses on Loans - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 105,611	$ 108,323	$ 112,347	$ 114,150	$ 114,931	$ 116,741
Loans receivable, gross	9,256,701		8,669,717
Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	52,004	54,762	62,763	62,360	63,348	64,184
Loans receivable, gross	5,568,929		5,572,244
Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	5,933	5,445	6,742	6,387	6,773	8,407
Loans receivable, gross	181,668		140,060
Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	985	968	1,695	1,678	1,599	882
Loans receivable, gross	375,425		385,824
Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	5,772	7,405	5,592	6,955	6,027	9,165
Loans receivable, gross	90,252		80,359
Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	2,999	3,035	3,077	2,862	2,974	3,552
Loans receivable, gross	105,463		111,130
Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	5,035	4,673	4,248	4,141	4,187	3,816
Loans receivable, gross	1,093,374		920,285
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	7,268	6,734	7,548	6,689	5,924	5,595
Loans receivable, gross	981,824		752,957
Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	21,662	21,146	16,527	18,696	20,403	16,614
Loans receivable, gross	512,973		434,088
HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	864	850	928	1,015	975	1,002
Loans receivable, gross	137,837		134,455
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	3,089	$ 3,305	3,227	$ 3,367	$ 2,721	$ 3,524
Loans receivable, gross	208,956		138,315
Loans Collectively Evaluated for Impairment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	105,611		112,287
Loans receivable, gross	$ 8,478,557		$ 8,316,874
Ratio	1.30%		1.40%
Loans Collectively Evaluated for Impairment [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 52,004		$ 62,067
Loans receivable, gross	$ 5,497,635		$ 5,487,331
Ratio	1.00%		1.10%
Loans Collectively Evaluated for Impairment [Member] | Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 5,933		$ 6,682
Loans receivable, gross	$ 110,727		$ 130,901
Ratio	5.40%		5.50%
Loans Collectively Evaluated for Impairment [Member] | Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 985		$ 1,695
Loans receivable, gross	$ 204,914		$ 385,464
Ratio	0.50%		0.50%
Loans Collectively Evaluated for Impairment [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 5,772		$ 5,592
Loans receivable, gross	$ 68,234		$ 73,999
Ratio	8.50%		7.60%
Loans Collectively Evaluated for Impairment [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 2,999		$ 3,077
Loans receivable, gross	$ 91,392		$ 95,684
Ratio	3.30%		3.20%
Loans Collectively Evaluated for Impairment [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 5,035		$ 4,248
Loans receivable, gross	$ 1,008,452		$ 911,162
Ratio	0.50%		0.50%
Loans Collectively Evaluated for Impairment [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 7,268		$ 7,548
Loans receivable, gross	$ 685,198		$ 563,534
Ratio	1.10%		1.40%
Loans Collectively Evaluated for Impairment [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 21,662		$ 17,223
Loans receivable, gross	$ 484,902		$ 421,816
Ratio	4.50%		4.60%
Loans Collectively Evaluated for Impairment [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 864		$ 928
Loans receivable, gross	$ 121,241		$ 114,393
Ratio	0.70%		0.90%
Loans Collectively Evaluated for Impairment [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 3,089		$ 3,227
Loans receivable, gross	$ 205,862		$ 132,590
Ratio	1.50%		2.40%
Loans Individually Evaluated for Impairment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 60
Loans receivable, gross	$ 88,008		$ 134,736
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment [Member] | Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 0
Loans receivable, gross	$ 49,305		$ 72,869
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment [Member] | Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 60
Loans receivable, gross	$ 6,983		$ 9,159
Ratio	0.00%		0.70%
Loans Individually Evaluated for Impairment [Member] | Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 0
Loans receivable, gross	$ 0		$ 360
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment [Member] | Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 0
Loans receivable, gross	$ 3,237		$ 3,833
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment [Member] | Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 0
Loans receivable, gross	$ 11,044		$ 12,939
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment [Member] | Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 0
Loans receivable, gross	$ 4,584		$ 6,124
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 0
Loans receivable, gross	$ 11,133		$ 27,802
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment [Member] | Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 0
Loans receivable, gross	$ 0		$ 0
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment [Member] | HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 0
Loans receivable, gross	$ 1,633		$ 1,650
Ratio	0.00%		0.00%
Loans Individually Evaluated for Impairment [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for probable losses	$ 0		$ 0
Loans receivable, gross	$ 89		$ 0
Ratio	0.00%		0.00%

Allowance for Losses on Loans38

Allowance for Losses on Loans - Internally Assigned Grade (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	$ 8,817,760	$ 8,323,545
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	$ 8,614,634	$ 8,077,711
Total grade as a % of total net loans	97.70%	97.20%
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	$ 7,772	$ 37,860
Total grade as a % of total net loans	0.10%	0.40%
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	$ 195,354	$ 207,916
Total grade as a % of total net loans	2.20%	2.40%
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	$ 0	$ 58
Total grade as a % of total net loans	0.00%	0.00%
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	$ 0	$ 0
Total grade as a % of total net loans	0.00%	0.00%
Non-Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	$ 8,536,860	$ 8,062,943
Non-Acquired Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	8,379,175	7,859,518
Non-Acquired Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	6,033	19,504
Non-Acquired Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	151,652	183,921
Non-Acquired Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Single-Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	5,546,941	5,557,756
Non-Acquired Loans [Member] | Single-Family Residential [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	5,456,628	5,424,624
Non-Acquired Loans [Member] | Single-Family Residential [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	2,793
Non-Acquired Loans [Member] | Single-Family Residential [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	90,313	130,339
Non-Acquired Loans [Member] | Single-Family Residential [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Single-Family Residential [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Construction - Speculative [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	117,711	87,035
Non-Acquired Loans [Member] | Construction - Speculative [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	114,706	81,931
Non-Acquired Loans [Member] | Construction - Speculative [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Construction - Speculative [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	3,005	5,104
Non-Acquired Loans [Member] | Construction - Speculative [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Construction - Speculative [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Construction - Custom [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	204,914	192,098
Non-Acquired Loans [Member] | Construction - Custom [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	204,914	192,098
Non-Acquired Loans [Member] | Construction - Custom [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Construction - Custom [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Construction - Custom [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Construction - Custom [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Land - Acquisition & Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	72,856	68,066
Non-Acquired Loans [Member] | Land - Acquisition & Development [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	67,726	61,949
Non-Acquired Loans [Member] | Land - Acquisition & Development [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Land - Acquisition & Development [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	5,130	6,117
Non-Acquired Loans [Member] | Land - Acquisition & Development [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Land - Acquisition & Development [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Land - Consumer Lot Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	102,436	108,589
Non-Acquired Loans [Member] | Land - Consumer Lot Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	102,007	107,979
Non-Acquired Loans [Member] | Land - Consumer Lot Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Land - Consumer Lot Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	429	610
Non-Acquired Loans [Member] | Land - Consumer Lot Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Land - Consumer Lot Loans [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	1,013,745	892,195
Non-Acquired Loans [Member] | Multi-Family [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	1,009,785	887,639
Non-Acquired Loans [Member] | Multi-Family [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Multi-Family [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	3,960	4,556
Non-Acquired Loans [Member] | Multi-Family [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Multi-Family [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	697,960	529,304
Non-Acquired Loans [Member] | Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	682,908	495,892
Non-Acquired Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	5,068	1,971
Non-Acquired Loans [Member] | Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	9,984	31,441
Non-Acquired Loans [Member] | Commercial Real Estate [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Commercial Real Estate [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	451,473	379,173
Non-Acquired Loans [Member] | Commercial & Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	411,925	359,168
Non-Acquired Loans [Member] | Commercial & Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	965	14,740
Non-Acquired Loans [Member] | Commercial & Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	38,583	5,265
Non-Acquired Loans [Member] | Commercial & Industrial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Commercial & Industrial [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	122,874	116,042
Non-Acquired Loans [Member] | HELOC [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	122,626	115,794
Non-Acquired Loans [Member] | HELOC [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | HELOC [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	248	248
Non-Acquired Loans [Member] | HELOC [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | HELOC [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	205,950	132,685
Non-Acquired Loans [Member] | Consumer [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	205,950	132,444
Non-Acquired Loans [Member] | Consumer [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Consumer [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	241
Non-Acquired Loans [Member] | Consumer [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Non-Acquired Loans [Member] | Consumer [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	188,552	181,314
Acquired Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	169,240	156,913
Acquired Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	1,739	16,213
Acquired Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	17,573	8,130
Acquired Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	58
Acquired Loans [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Single-Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	12,895	11,716
Acquired Loans [Member] | Single-Family Residential [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	12,872	11,716
Acquired Loans [Member] | Single-Family Residential [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Single-Family Residential [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	23	0
Acquired Loans [Member] | Single-Family Residential [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Single-Family Residential [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Land - Acquisition & Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	1,028	905
Acquired Loans [Member] | Land - Acquisition & Development [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	651	503
Acquired Loans [Member] | Land - Acquisition & Development [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Land - Acquisition & Development [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	377	402
Acquired Loans [Member] | Land - Acquisition & Development [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Land - Acquisition & Development [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Land - Consumer Lot Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	2,472	2,502
Acquired Loans [Member] | Land - Consumer Lot Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	2,355	2,502
Acquired Loans [Member] | Land - Consumer Lot Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Land - Consumer Lot Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	117	0
Acquired Loans [Member] | Land - Consumer Lot Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Land - Consumer Lot Loans [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	3,692	2,999
Acquired Loans [Member] | Multi-Family [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	3,692	2,999
Acquired Loans [Member] | Multi-Family [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Multi-Family [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Multi-Family [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Multi-Family [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	101,542	97,864
Acquired Loans [Member] | Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	86,529	88,940
Acquired Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	511	2,571
Acquired Loans [Member] | Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	14,502	6,353
Acquired Loans [Member] | Commercial Real Estate [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Commercial Real Estate [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	57,612	51,384
Acquired Loans [Member] | Commercial & Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	54,243	36,309
Acquired Loans [Member] | Commercial & Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	1,228	13,642
Acquired Loans [Member] | Commercial & Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	2,141	1,375
Acquired Loans [Member] | Commercial & Industrial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	58
Acquired Loans [Member] | Commercial & Industrial [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	6,414	8,274
Acquired Loans [Member] | HELOC [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	6,414	8,274
Acquired Loans [Member] | HELOC [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | HELOC [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | HELOC [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | HELOC [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	2,897	5,670
Acquired Loans [Member] | Consumer [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	2,484	5,670
Acquired Loans [Member] | Consumer [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Consumer [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	413	0
Acquired Loans [Member] | Consumer [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Acquired Loans [Member] | Consumer [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	92,348	79,288
Credit Impaired Acquired Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	66,219	61,280
Credit Impaired Acquired Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	2,143
Credit Impaired Acquired Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	26,129	15,865
Credit Impaired Acquired Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Single-Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	320	325
Credit Impaired Acquired Loans [Member] | Single-Family Residential [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	320	325
Credit Impaired Acquired Loans [Member] | Single-Family Residential [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Single-Family Residential [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Single-Family Residential [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Single-Family Residential [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Construction, Speculative and Land, Acquisition and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	8,960	1,581
Credit Impaired Acquired Loans [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	6,655	1,251
Credit Impaired Acquired Loans [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	2,305	330
Credit Impaired Acquired Loans [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Construction, Speculative and Land, Acquisition and Development [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Multi-Family [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Multi-Family [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Multi-Family [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Multi-Family [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Multi-Family [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | HELOC & Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	9,236	10,194
Credit Impaired Acquired Loans [Member] | HELOC & Other Consumer [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	8,598	10,194
Credit Impaired Acquired Loans [Member] | HELOC & Other Consumer [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | HELOC & Other Consumer [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	638	0
Credit Impaired Acquired Loans [Member] | HELOC & Other Consumer [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | HELOC & Other Consumer [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	70,526	63,712
Credit Impaired Acquired Loans [Member] | Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	47,715	48,867
Credit Impaired Acquired Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	2,143
Credit Impaired Acquired Loans [Member] | Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	22,811	12,702
Credit Impaired Acquired Loans [Member] | Commercial Real Estate [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Commercial Real Estate [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	3,306	3,476
Credit Impaired Acquired Loans [Member] | Commercial & Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	2,931	643
Credit Impaired Acquired Loans [Member] | Commercial & Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Commercial & Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	375	2,833
Credit Impaired Acquired Loans [Member] | Commercial & Industrial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	0	0
Credit Impaired Acquired Loans [Member] | Commercial & Industrial [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, net of loans in process, gross	$ 0	$ 0

Allowance for Losses on Loans39

Allowance for Losses on Loans - Credit Risk Profile Based on Payment Activity (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 9,256,701	$ 8,669,717
Nonaccrual loans by portfolio segment	65,308	87,431
Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 8,467,685	$ 8,321,591
Total grade as a % of total net loans	99.20%	99.00%
Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 128,883	$ 147,311
Total grade as a % of total net loans	0.90%	1.00%
Nonaccrual loans by portfolio segment	$ 65,308	$ 87,431
Grade as a percentage of total gross loans	0.80%	1.00%
Single-Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 5,568,929	$ 5,572,244
Nonaccrual loans by portfolio segment	56,638	74,067
Single-Family Residential [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 5,490,303	$ 5,486,136
Total grade as a % of total net loans	99.00%	98.70%
Single-Family Residential [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 56,638	$ 74,067
Grade as a percentage of total gross loans	1.00%	1.30%
Construction - Speculative [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 181,668	$ 140,060
Nonaccrual loans by portfolio segment	762	1,477
Construction - Speculative [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 116,949	$ 138,583
Total grade as a % of total net loans	99.40%	98.90%
Construction - Speculative [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 762	$ 1,477
Grade as a percentage of total gross loans	0.60%	1.10%
Construction - Custom [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 375,425	$ 385,824
Nonaccrual loans by portfolio segment	355	0
Construction - Custom [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 204,559	$ 385,824
Total grade as a % of total net loans	99.80%	100.00%
Construction - Custom [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 355	$ 0
Grade as a percentage of total gross loans	0.20%	0.00%
Land - Acquisition & Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 90,252	$ 80,359
Nonaccrual loans by portfolio segment	0	811
Land - Acquisition & Development [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 71,471	$ 77,021
Total grade as a % of total net loans	100.00%	99.00%
Land - Acquisition & Development [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 0	$ 811
Grade as a percentage of total gross loans	0.00%	1.00%
Land - Consumer Lot Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 105,463	$ 111,130
Nonaccrual loans by portfolio segment	1,308	2,637
Land - Consumer Lot Loans [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 101,128	$ 105,986
Total grade as a % of total net loans	98.40%	97.60%
Land - Consumer Lot Loans [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 1,308	$ 2,637
Grade as a percentage of total gross loans	1.60%	2.40%
Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 1,093,374	$ 920,285
Nonaccrual loans by portfolio segment	786	1,742
Multi-Family [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 1,012,250	$ 915,544
Total grade as a % of total net loans	99.80%	99.80%
Multi-Family [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 786	$ 1,742
Grade as a percentage of total gross loans	0.20%	0.20%
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 981,824	$ 752,957
Nonaccrual loans by portfolio segment	2,852	5,106
Commercial Real Estate [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 693,479	$ 586,230
Total grade as a % of total net loans	99.70%	99.10%
Commercial Real Estate [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 2,852	$ 5,106
Grade as a percentage of total gross loans	0.30%	0.90%
Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 512,973	$ 434,088
Nonaccrual loans by portfolio segment	1,205	7
Commercial & Industrial [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 450,124	$ 379,219
Total grade as a % of total net loans	99.80%	100.00%
Commercial & Industrial [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 1,205	$ 7
Grade as a percentage of total gross loans	0.20%	0.00%
HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 137,837	$ 134,455
Nonaccrual loans by portfolio segment	889	795
HELOC [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 121,985	$ 115,247
Total grade as a % of total net loans	99.30%	99.30%
HELOC [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 889	$ 795
Grade as a percentage of total gross loans	0.70%	0.70%
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 208,956	$ 138,315
Nonaccrual loans by portfolio segment	513	789
Consumer [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 205,437	$ 131,801
Total grade as a % of total net loans	99.80%	99.40%
Consumer [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans by portfolio segment	$ 513	$ 789
Grade as a percentage of total gross loans	0.20%	0.60%

Allowance for Losses on Loans40

Allowance for Losses on Loans - Impaired Loans Based on Loan Types (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 363,216	$ 435,185
Unpaid Principal Balance	393,993	470,190
Related Allowance	8,057	10,587
Average Recorded Investment	363,891	403,138
Amount of related allowance included in specific reserves		60
Amount of related allowance included in general reserves		10,527
Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	41,982	46,680
Unpaid Principal Balance	64,774	73,123
Related Allowance	0	0
Average Recorded Investment	41,085	37,474
Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	321,234	388,505
Unpaid Principal Balance	329,219	397,067
Related Allowance	8,057	10,587
Average Recorded Investment	322,806	365,664
Single-Family Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	296,703	346,364
Unpaid Principal Balance	303,194	354,497
Related Allowance	8,057	10,527
Average Recorded Investment	296,613	333,191
Single-Family Residential [Member] | Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	21,524	24,044
Unpaid Principal Balance	24,151	26,628
Related Allowance	0	0
Average Recorded Investment	20,724	16,843
Single-Family Residential [Member] | Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	275,179	322,320
Unpaid Principal Balance	279,043	327,869
Related Allowance	8,057	10,527
Average Recorded Investment	275,889	316,348
Construction - Speculative [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	6,984	9,159
Unpaid Principal Balance	7,969	10,159
Related Allowance	0	60
Average Recorded Investment	7,004	9,336
Construction - Speculative [Member] | Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	613	1,603
Unpaid Principal Balance	808	2,173
Related Allowance	0	0
Average Recorded Investment	615	1,804
Construction - Speculative [Member] | Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	6,371	7,556
Unpaid Principal Balance	7,161	7,986
Related Allowance	0	60
Average Recorded Investment	6,389	7,532
Construction - Custom [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	355
Unpaid Principal Balance	355
Related Allowance	0
Average Recorded Investment	178
Construction - Custom [Member] | Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	355
Unpaid Principal Balance	355
Related Allowance	0
Average Recorded Investment	178
Construction - Custom [Member] | Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0
Unpaid Principal Balance	0
Related Allowance	0
Average Recorded Investment	0
Land - Acquisition & Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,216	5,533
Unpaid Principal Balance	5,699	7,961
Related Allowance	0	0
Average Recorded Investment	4,254	5,152
Land - Acquisition & Development [Member] | Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	680	837
Unpaid Principal Balance	1,223	2,325
Related Allowance	0	0
Average Recorded Investment	683	1,038
Land - Acquisition & Development [Member] | Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	3,536	4,696
Unpaid Principal Balance	4,476	5,636
Related Allowance	0	0
Average Recorded Investment	3,571	4,114
Land - Consumer Lot Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	12,641	13,976
Unpaid Principal Balance	12,992	14,457
Related Allowance	0	0
Average Recorded Investment	12,596	13,571
Land - Consumer Lot Loans [Member] | Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,101	974
Unpaid Principal Balance	1,187	1,072
Related Allowance	0	0
Average Recorded Investment	969	713
Land - Consumer Lot Loans [Member] | Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	11,540	13,002
Unpaid Principal Balance	11,805	13,385
Related Allowance	0	0
Average Recorded Investment	11,627	12,858
Multi-Family [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	5,374	6,354
Unpaid Principal Balance	5,374	6,574
Related Allowance	0	0
Average Recorded Investment	4,991	5,284
Multi-Family [Member] | Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,531	1,111
Unpaid Principal Balance	1,531	1,111
Related Allowance	0	0
Average Recorded Investment	1,138	327
Multi-Family [Member] | Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	3,843	5,243
Unpaid Principal Balance	3,843	5,463
Related Allowance	0	0
Average Recorded Investment	3,853	4,957
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	29,667	47,393
Unpaid Principal Balance	36,003	55,113
Related Allowance	0	0
Average Recorded Investment	29,757	30,292
Commercial Real Estate [Member] | Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	10,416	13,234
Unpaid Principal Balance	14,797	20,085
Related Allowance	0	0
Average Recorded Investment	9,795	11,720
Commercial Real Estate [Member] | Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	19,251	34,159
Unpaid Principal Balance	21,206	35,028
Related Allowance	0	0
Average Recorded Investment	19,962	18,572
Commercial & Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,340	3,195
Unpaid Principal Balance	18,276	17,166
Related Allowance	0	0
Average Recorded Investment	5,664	3,900
Commercial & Industrial [Member] | Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,340	3,195
Unpaid Principal Balance	18,276	17,166
Related Allowance	0	0
Average Recorded Investment	5,664	3,900
Commercial & Industrial [Member] | Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0
Unpaid Principal Balance	0
Related Allowance	0
Average Recorded Investment	0
HELOC [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,402	2,505
Unpaid Principal Balance	3,213	3,216
Related Allowance	0	0
Average Recorded Investment	2,299	1,816
HELOC [Member] | Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,008	1,019
Unpaid Principal Balance	1,819	1,730
Related Allowance	0	0
Average Recorded Investment	905	612
HELOC [Member] | Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,394	1,486
Unpaid Principal Balance	1,394	1,486
Related Allowance	0	0
Average Recorded Investment	1,394	1,204
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	534	706
Unpaid Principal Balance	918	1,047
Related Allowance	0	0
Average Recorded Investment	535	596
Consumer [Member] | Financing Receivable, Impairment, No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	414	663
Unpaid Principal Balance	627	833
Related Allowance	0	0
Average Recorded Investment	414	517
Consumer [Member] | Financing Receivable, Impairment, Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	120	43
Unpaid Principal Balance	291	214
Related Allowance	0	0
Average Recorded Investment	$ 121	$ 79

Fair Value Measurements - Recur

Fair Value Measurements - Recurring and Nonrecurring (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	$ 2,624,374,000		$ 2,624,374,000		$ 3,049,442,000
Bank owned life insurance	101,720,000		101,720,000		0
Total financial assets	4,178,090,000		4,178,090,000		4,548,660,000
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Bank owned life insurance	101,720,000		101,720,000		0
Interest rate contracts	5,429,000		5,429,000		2,879,000
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contracts	5,429,000		5,429,000		2,879,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	2,624,374,000		2,624,374,000		3,049,442,000
Bank owned life insurance	101,720,000		101,720,000
Interest rate contracts	5,429,000		5,429,000		2,879,000
Total financial assets	2,731,523,000		2,731,523,000		3,052,321,000
Interest rate contracts	5,429,000		5,429,000		2,879,000
Long term borrowing hedge	3,914,000		3,914,000		268,000
Total financial liabilities	9,343,000		9,343,000		3,147,000
Level 1 to level 2 transfers, amount	0		0		0
Level 2 to level 1 transfers, amount	0		0		0
Level 1 to level 3 transfers, amount	0		0		0
Level 3 to level 1 transfers, amount	0		0		0
Level 2 to level 3 transfers, amount	0		0		0
Level 3 to level 2 transfers, amount	0		0		0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	102,447,000		102,447,000		101,387,000
Bank owned life insurance	0		0
Interest rate contracts	0		0		0
Total financial assets	102,447,000		102,447,000		101,387,000
Interest rate contracts	0		0		0
Long term borrowing hedge	0		0		0
Total financial liabilities	0		0		0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	2,521,927,000		2,521,927,000		2,948,055,000
Bank owned life insurance	101,720,000		101,720,000
Interest rate contracts	5,429,000		5,429,000		2,879,000
Total financial assets	2,629,076,000		2,629,076,000		2,950,934,000
Interest rate contracts	5,429,000		5,429,000		2,879,000
Long term borrowing hedge	3,914,000		3,914,000		268,000
Total financial liabilities	9,343,000		9,343,000		3,147,000
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
Bank owned life insurance	0		0
Interest rate contracts	0		0		0
Total financial assets	0		0		0
Interest rate contracts	0		0		0
Long term borrowing hedge	0		0		0
Total financial liabilities	0		0		0
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	80,516,000	$ 62,173,000	80,516,000	$ 62,173,000
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	6,735,000	10,156,000	6,735,000	10,156,000
Fair Value, Measurements, Nonrecurring [Member] | Covered Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1,950,000	8,935,000	1,950,000	8,935,000
Fair Value, Measurements, Nonrecurring [Member] | Real Estate Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	71,831,000	43,082,000	71,831,000	43,082,000
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member] | Covered Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member] | Real Estate Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member] | Covered Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member] | Real Estate Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	80,516,000	62,173,000	80,516,000	62,173,000
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	6,735,000	10,156,000	6,735,000	10,156,000
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member] | Covered Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1,950,000	8,935,000	1,950,000	8,935,000
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member] | Real Estate Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	71,831,000	43,082,000	71,831,000	43,082,000
Equity Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	102,447,000		102,447,000		101,387,000
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	102,447,000		102,447,000		101,387,000
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	102,447,000		102,447,000		101,387,000
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
US Treasury and Government [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	529,472,000		529,472,000		731,943,000
US Treasury and Government [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	529,472,000		529,472,000		731,943,000
US Treasury and Government [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
US Treasury and Government [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	529,472,000		529,472,000		731,943,000
US Treasury and Government [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
Obligations of States and Political Subdivisions [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	27,275,000		27,275,000		23,681,000
Obligations of States and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	27,275,000		27,275,000		23,681,000
Obligations of States and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
Obligations of States and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	27,275,000		27,275,000		23,681,000
Obligations of States and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
Foreign Government Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value					0
Foreign Government Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value					0
Foreign Government Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value					0
Foreign Government Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value					0
Corporate Debt Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	528,716,000		528,716,000		509,007,000
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	528,716,000		528,716,000		509,007,000
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	528,716,000		528,716,000		509,007,000
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
Agency Pass-through Certificates [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	1,328,852,000		1,328,852,000		1,584,508,000
Agency Pass-through Certificates [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	1,328,852,000		1,328,852,000		1,584,508,000
Agency Pass-through Certificates [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
Agency Pass-through Certificates [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	1,328,852,000		1,328,852,000		1,584,508,000
Agency Pass-through Certificates [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0		0
Other Commercial Mortgage-Backed Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	107,612,000		107,612,000		98,916,000
Other Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	107,612,000		107,612,000
Other Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
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 [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	107,612,000		107,612,000
Other Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0		0
Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value					98,916,000
Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value					0
Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value					98,916,000
Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value					$ 0
Changes Measurement [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss related to impaired loans and real estate held for sale, measured on nonrecurring basis	5,987,000	9,999,000	(4,202,000)	15,974,000
Changes Measurement [Member] | Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss related to impaired loans and real estate held for sale, measured on nonrecurring basis	3,621,000	(775,000)	4,201,000	(1,311,000)
Changes Measurement [Member] | Fair Value, Measurements, Nonrecurring [Member] | Covered Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss related to impaired loans and real estate held for sale, measured on nonrecurring basis	(20,000)	374,000	168,000	503,000
Changes Measurement [Member] | Fair Value, Measurements, Nonrecurring [Member] | Real Estate Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss related to impaired loans and real estate held for sale, measured on nonrecurring basis	$ 2,386,000	$ 10,400,000	$ (8,571,000)	$ 16,782,000

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	$ 2,624,374	$ 3,049,442
Held-to-maturity securities	1,553,716	1,499,218
FHLB and FRB stock	103,189	158,839
Bank owned life insurance	101,720	0
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	2,624,374	3,049,442
Held-to-maturity securities	1,586,514	1,548,265
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	349,550	781,843
Bank owned life insurance	101,720	0
Other assets - interest rate contracts	5,429	2,879
Level 1 [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	349,550	781,843
Bank owned life insurance	101,720	0
Other assets - interest rate contracts	0	0
Level 1 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	102,447	101,387
Level 1 [Member] | Equity Securities [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	102,447	101,387
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
FHLB and FRB stock	103,189	158,839
Customer accounts	9,830,817	9,946,586
FHLB advances	1,833,413	2,054,437
Other liabilities - interest rate contracts	5,429	2,879
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	3,914	268
Level 2 [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
FHLB and FRB stock	103,189	158,839
Customer accounts	10,578,385	10,716,928
FHLB advances	1,730,000	1,930,000
Other liabilities - interest rate contracts	0	0
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	0	0
Level 2 [Member] | Agency Pass-through Certificates [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	1,553,716	1,499,218
Level 2 [Member] | Agency Pass-through Certificates [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity securities	1,586,514	1,548,265
Level 2 [Member] | US Treasury and Government [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	529,472	731,943
Level 2 [Member] | US Treasury and Government [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	529,472	731,943
Level 2 [Member] | Obligations of States and Political Subdivisions [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	27,275	23,681
Level 2 [Member] | Obligations of States and Political Subdivisions [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	27,275	23,681
Level 2 [Member] | Corporate Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	528,716	509,007
Level 2 [Member] | Corporate Debt Securities [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	528,716	509,007
Level 2 [Member] | Agency Pass-through Certificates [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	1,328,852	1,584,508
Level 2 [Member] | Agency Pass-through Certificates [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	1,328,852	1,584,508
Level 2 [Member] | Other Commercial Mortgage-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	107,612	98,916
Level 2 [Member] | Other Commercial Mortgage-Backed Securities [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	107,612	98,916
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable	9,175,928	8,667,771
Covered loans	81,737	176,761
FDIC indemnification asset	18,263	35,976
Level 3 [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable	8,645,609	8,148,322
Covered loans	77,311	176,476
FDIC indemnification asset	$ 18,783	$ 36,860

Fair Value Measurements - Inves

Fair Value Measurements - Investments by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Amortized Cost, Available-for-sale securities
Amortized Cost	$ 2,603,097	$ 3,016,432
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains	27,339	37,273
Gross unrealized loss	(6,062)	(4,263)
Fair Value, Available-for-sale securities
Available-for-sale securities, at fair value	$ 2,624,374	$ 3,049,442
Yield, Available-for-sale securities
Yield	2.00%	1.99%
Yield, Held-to-maturity securities
Investments	$ 4,189,611	$ 4,564,697
Gross unrealized gains on investments	33,532	42,128
Gross unrealized losses on investments	(45,053)	(58,165)
Total financial assets	$ 4,178,090	$ 4,548,660
Yield on investments	2.43%	2.38%
US Treasury and Government [Member]
Amortized Cost, Available-for-sale securities
1 to 5 years	$ 135,967	$ 171,154
5 to 10 years	75,441	203,317
Over 10 years	316,929	354,828
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, 1 to 5 years	2,078	2,585
Gross unrealized gains, 5 to 10 years	149	300
Gross unrealized gains, Over 10 years	435	1,028
Gross unrealized losses, 1 to 5 years	(460)	(748)
Gross unrealized losses, 5 to 10 years	(7)	(102)
Gross unrealized losses, Over 10 years	(1,060)	(419)
Fair Value, Available-for-sale securities
1 to 5 years	137,585	172,991
5 to 10 years	75,583	203,515
Over 10 years	$ 316,304	$ 355,437
Yield, Available-for-sale securities
1 to 5 years	1.43%	1.26%
5 to 10 years	1.20%	1.45%
Over 10 years	1.31%	1.25%
Equity Securities [Member]
Amortized Cost, Available-for-sale securities
Within 1 year	$ 500
1 to 5 years	100,000	$ 100,500
5 to 10 years	0
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, Within 1 year	18
Gross unrealized gains, 1 to 5 years	1,929	887
Gross unrealized gains, 5 to 10 years	0
Gross unrealized losses, Within 1 year	0
Gross unrealized losses, 1 to 5 years	0	0
Gross unrealized losses, 5 to 10 years	0
Fair Value, Available-for-sale securities
Within 1 year	518
1 to 5 years	101,929	$ 101,387
5 to 10 years	$ 0
Yield, Available-for-sale securities
Within 1 year	1.80%
1 to 5 years	1.90%	1.90%
5 to 10 years	0.00%
Corporate Debt Securities [Member]
Amortized Cost, Available-for-sale securities
Within 1 year	$ 39,702	$ 15,000
1 to 5 years	303,094	302,540
5 to 10 years	133,306	138,201
Over 10 years	50,000	50,000
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, Within 1 year	283	75
Gross unrealized gains, 1 to 5 years	1,414	2,372
Gross unrealized gains, 5 to 10 years	1,814	1,789
Gross unrealized gains, Over 10 years	750	0
Gross unrealized losses, Within 1 year	0	0
Gross unrealized losses, 1 to 5 years	0	0
Gross unrealized losses, 5 to 10 years	(1,647)	(970)
Gross unrealized losses, Over 10 years	0	0
Fair Value, Available-for-sale securities
Within 1 year	39,985	15,075
1 to 5 years	304,508	304,912
5 to 10 years	133,473	139,020
Over 10 years	$ 50,750	$ 50,000
Yield, Available-for-sale securities
Within 1 year	0.68%	1.00%
1 to 5 years	0.81%	0.71%
5 to 10 years	1.54%	1.43%
Over 10 years	3.00%	3.00%
Municipal Bonds [Member]
Amortized Cost, Available-for-sale securities
1 to 5 years	$ 2,278
5 to 10 years	1,295
Over 10 years	20,387	$ 20,402
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, 1 to 5 years	0
Gross unrealized gains, 5 to 10 years	0
Gross unrealized gains, Over 10 years	3,330	3,279
Gross unrealized losses, 1 to 5 years	(1)
Gross unrealized losses, 5 to 10 years	(14)
Gross unrealized losses, Over 10 years	0	0
Fair Value, Available-for-sale securities
1 to 5 years	2,277
5 to 10 years	1,281
Over 10 years	$ 23,717	$ 23,681
Yield, Available-for-sale securities
1 to 5 years	1.23%
5 to 10 years	2.05%
Over 10 years	6.45%	6.45%
Agency Pass-through Certificates [Member]
Amortized Cost, Available-for-sale securities
Without single maturity date	$ 1,316,686	$ 1,561,639
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, Without single maturity date	14,988	24,893
Gross unrealized losses, Without single maturity date	(2,822)	(2,024)
Fair Value, Available-for-sale securities
Without single maturity date	$ 1,328,852	$ 1,584,508
Yield, Available-for-sale securities
Without single maturity date	2.58%	2.57%
Amortized Cost, Held-to-maturity securities
Without single maturity date	$ 1,586,514	$ 1,548,265
Gross Unrealized Gains / Losses, Held-to-maturity securities
Gross unrealized gains, Without single maturity date	6,193	4,855
Gross unrealized losses, Without single maturity date	(38,991)	(53,902)
Fair Value, Held-to-maturity securities
Without single maturity date	$ 1,553,716	$ 1,499,218
Yield, Held-to-maturity securities
Without a single maturity date	3.16%	3.13%
Commercial Mortgage Backed Securities [Member]
Amortized Cost, Available-for-sale securities
Without single maturity date	$ 107,512	$ 98,851
Gross Unrealized Gains / Losses, Available-for-sale securities
Gross unrealized gains, Without single maturity date	151	65
Gross unrealized losses, Without single maturity date	(51)	0
Fair Value, Available-for-sale securities
Without single maturity date	$ 107,612	$ 98,916
Yield, Available-for-sale securities
Without single maturity date	1.48%	1.49%

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fair Value Disclosures [Abstract]
Proceeds on available-for-sale securities sold	$ 238,000,000	$ 0	$ 244,749,000	$ 0
Gain (loss) on available-for-sale securities sold	$ 9,639,000
Term of contractual due dates of substantially all mortgage-backed securities			10 years

Fair Value Measurements - Secur

Fair Value Measurements - Securities in Unrealized Loss Positions (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Unrealized loss position, less than 12 months, aggregate losses	$ (3,514)	$ (812)
Unrealized loss position, less than 12 months, fair value	622,801	360,665
Unrealized loss position, 12 months or longer, aggregate losses	(41,539)	(57,353)
Unrealized loss position, 12 months or longer, fair value	1,536,911	1,642,718
Unrealized loss position, aggregate losses	(45,053)	(58,165)
Unrealized loss position, fair value	2,159,712	2,003,383
Corporate Bond Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized loss position, less than 12 months, aggregate losses	(1,022)	(125)
Unrealized loss position, less than 12 months, fair value	23,978	24,875
Unrealized loss position, 12 months or longer, aggregate losses	(625)	(845)
Unrealized loss position, 12 months or longer, fair value	34,375	24,155
Unrealized loss position, aggregate losses	(1,647)	(970)
Unrealized loss position, fair value	58,353	49,030
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized loss position, less than 12 months, aggregate losses	(15)
Unrealized loss position, less than 12 months, fair value	3,558
Unrealized loss position, 12 months or longer, aggregate losses	0
Unrealized loss position, 12 months or longer, fair value	0
Unrealized loss position, aggregate losses	(15)
Unrealized loss position, fair value	3,558
US Government Agencies Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized loss position, less than 12 months, aggregate losses	(558)	(472)
Unrealized loss position, less than 12 months, fair value	140,285	316,578
Unrealized loss position, 12 months or longer, aggregate losses	(969)	(797)
Unrealized loss position, 12 months or longer, fair value	142,318	109,354
Unrealized loss position, aggregate losses	(1,527)	(1,269)
Unrealized loss position, fair value	282,603	425,932
Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized loss position, less than 12 months, aggregate losses	(1,919)	(215)
Unrealized loss position, less than 12 months, fair value	454,980	19,212
Unrealized loss position, 12 months or longer, aggregate losses	(39,945)	(55,711)
Unrealized loss position, 12 months or longer, fair value	1,360,218	1,509,209
Unrealized loss position, aggregate losses	(41,864)	(55,926)
Unrealized loss position, fair value	$ 1,815,198	$ 1,528,421

Covered Assets - Additional Inf

Covered Assets - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Sep. 30, 2014
Covered Assets [Line Items]
Covered assets	$ 81,745	$ 81,745	$ 200,558
Covered loans, gross	81,164	81,164	213,203
Discount	3,853	3,853	34,483
Covered loans, allowance for losses	0	$ 0	$ 2,244
Single-Family Residential [Member]
Covered Assets [Line Items]
Remaining term		5 years
Horizon Bank [Member]
Covered Assets [Line Items]
FDIC loss share coverage expired	47,774
Home Valley Bank [Member]
Covered Assets [Line Items]
Covered assets	$ 38,712	$ 38,712

Covered Assets - Acquired Impai

Covered Assets - Acquired Impaired and Non-impaired Covered Loans (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretion, carrying amount of loans	$ 422	$ 802
Acquired Impaired Loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period, accretable yield	64,534	78,277
Balance at beginning of period, carrying amount of loans	78,055	138,091
Transferred to non-covered, accretable yield	(23,167)
Transferred to non-covered, carrying amount	(15,866)
Reclassification from nonaccretable balance, net, accretable yield	6,307	10,186
Reclassification from nonaccretable balance, net, Carrying Amount of Loans	0	2,069
Accretion, accretable yield	(11,577)	(23,929)
Accretion, carrying amount of loans	11,577	23,929
Transfers to REO, accretable yield	0	0
Transfers to REO, carrying amount of loans	(1,893)	(8,943)
Payments received, net, accretable yield	0	0
Payments received, net, carrying amount of loans	(19,845)	(72,953)
Balance at end of period, accretable yield	36,097	64,534
Balance at end of period, carrying amount of loans	52,028	78,055
Acquired Non Impaired Assets [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period, accretable yield	10,259	17,263
Balance at beginning of period, carrying amount of loans	98,422	157,856
Transferred to non-covered, accretable yield	(1,482)
Transferred to non-covered, carrying amount	(33,649)
Reclassification from nonaccretable balance, net, accretable yield	0	0
Reclassification from nonaccretable balance, net, Carrying Amount of Loans	0	0
Accretion, accretable yield	(4,358)	(7,004)
Accretion, carrying amount of loans	4,358	7,004
Transfers to REO, accretable yield	0	0
Transfers to REO, carrying amount of loans	0	0
Payments received, net, accretable yield	0	0
Payments received, net, carrying amount of loans	(43,848)	(66,438)
Balance at end of period, accretable yield	4,419	10,259
Balance at end of period, carrying amount of loans	$ 25,283	$ 98,422

Covered Assets - FDIC Indemnifi

Covered Assets - FDIC Indemnification Asset (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
FDIC Indemnification Asset Movement Analysis [Roll Forward]
Balance at beginning of period	$ 36,860	$ 64,615
Additions and deletions	(1,795)	1,795
Payments made (received)	714	(2,502)
Amortization	(17,418)	(27,850)
Accretion	422	802
Balance at end of period	$ 18,783	$ 36,860

Covered Assets - Credit Risk Pr

Covered Assets - Credit Risk Profile by Internally Assigned Grade by Loan Status Designation (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Covered Assets, Loan Status Designation [Line Items]
Total covered loans	$ 81,164	$ 213,203
Discount	(3,853)	(34,483)
Allowance	0	(2,244)
Covered loans, net	77,311	176,476
Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	25,135	100,161
Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	56,029	113,042
Single-Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	15,893	23,067
Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		1,364
Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		73
Multi-Family [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		6,598
Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		51,336
Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	28	5,492
HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	9,214	11,777
Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		454
Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	1,764	20,261
Pool 2 - Single-Family Residential [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	14,706	15,964
Pool 3 - Multi-family [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	425	523
Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,611	3,977
Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	34,853	64,391
Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 1,670	$ 7,926
Pass [Member]
Covered Assets, Loan Status Designation [Line Items]
Total grade as a % of total net loans	97.70%	97.20%
Pass [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 24,514	$ 70,926
Total grade as a % of total net loans	97.50%	70.80%
Pass [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 41,384	$ 64,208
Pass [Member] | Single-Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	15,300	21,311
Pass [Member] | Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		972
Pass [Member] | Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		73
Pass [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		6,598
Pass [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		26,940
Pass [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	2,801
Pass [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	9,214	11,777
Pass [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		454
Pass [Member] | Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	151	8,349
Pass [Member] | Pool 2 - Single-Family Residential [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	14,375	15,585
Pass [Member] | Pool 3 - Multi-family [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	48	52
Pass [Member] | Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	2,611	2,804
Pass [Member] | Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	23,805	33,909
Pass [Member] | Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 394	$ 3,509
Special Mention [Member]
Covered Assets, Loan Status Designation [Line Items]
Total grade as a % of total net loans	0.10%	0.40%
Special Mention [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 0	$ 115
Total grade as a % of total net loans	0.00%	0.10%
Special Mention [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 0	$ 700
Special Mention [Member] | Single-Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Special Mention [Member] | Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Special Mention [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Special Mention [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		115
Special Mention [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Special Mention [Member] | Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Pool 2 - Single-Family Residential [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Pool 3 - Multi-family [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Special Mention [Member] | Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	700
Special Mention [Member] | Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 0	$ 0
Substandard [Member]
Covered Assets, Loan Status Designation [Line Items]
Total grade as a % of total net loans	2.20%	2.40%
Substandard [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 621	$ 29,120
Total grade as a % of total net loans	2.50%	29.10%
Substandard [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 14,645	$ 47,609
Substandard [Member] | Single-Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	593	1,756
Substandard [Member] | Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		392
Substandard [Member] | Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Substandard [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Substandard [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		24,281
Substandard [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	28	2,691
Substandard [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Substandard [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Substandard [Member] | Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	1,613	11,912
Substandard [Member] | Pool 2 - Single-Family Residential [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	331	379
Substandard [Member] | Pool 3 - Multi-family [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	377	471
Substandard [Member] | Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	1,173
Substandard [Member] | Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	11,048	29,782
Substandard [Member] | Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 1,276	$ 3,892
Doubtful [Member]
Covered Assets, Loan Status Designation [Line Items]
Total grade as a % of total net loans	0.00%	0.00%
Doubtful [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 0	$ 0
Total grade as a % of total net loans	0.00%	0.00%
Doubtful [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 0	$ 525
Doubtful [Member] | Single-Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Doubtful [Member] | Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Doubtful [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Doubtful [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Doubtful [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Doubtful [Member] | Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 2 - Single-Family Residential [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 3 - Multi-family [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Doubtful [Member] | Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 0	$ 525
Loss [Member]
Covered Assets, Loan Status Designation [Line Items]
Total grade as a % of total net loans	0.00%	0.00%
Loss [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 0	$ 0
Total grade as a % of total net loans	0.00%	0.00%
Loss [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 0	$ 0
Loss [Member] | Single-Family Residential [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Land - Acquisition & Development [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Loss [Member] | Land - Consumer Lot Loans [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Loss [Member] | Multi-Family [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Loss [Member] | Commercial Real Estate [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Loss [Member] | Commercial & Industrial [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | HELOC [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Consumer [Member] | Acquired Non Impaired Assets [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans		0
Loss [Member] | Pool 1 - Construction and Land, Acquisition and Development [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 2 - Single-Family Residential [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 3 - Multi-family [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 4 - Home Equity Line of Credit and Other Consumer Loans [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 5 - Commercial Real Estate [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	0	0
Loss [Member] | Pool 6 - Commercial and Industrial [Member] | Acquired Impaired Loans [Member]
Covered Assets, Loan Status Designation [Line Items]
Outstanding principal balance of acquired loans	$ 0	$ 0

Covered Assets - Aging Analysis

Covered Assets - Aging Analysis of Non-Credit Impaired Loans (Details) - Acquired Non Impaired Assets [Member] - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans	$ 25,135	$ 100,161
Covered loans, current	24,532	98,342
Covered loans, 30 days	10	241
Covered loans, 60 days	214	40
Covered assets, 90 days	379	1,538
Total Past Due	$ 603	$ 1,819
% based on $	2.40%	1.82%
Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans	$ 15,893	$ 23,067
Covered loans, current	15,300	22,391
Covered loans, 30 days	0	230
Covered loans, 60 days	214	40
Covered assets, 90 days	379	406
Total Past Due	$ 593	$ 676
% based on $	3.73%	2.93%
Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans		$ 1,364
Covered loans, current		1,328
Covered loans, 30 days		0
Covered loans, 60 days		0
Covered assets, 90 days		36
Total Past Due		$ 36
% based on $		2.64%
Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans		$ 73
Covered loans, current		73
Covered loans, 30 days		0
Covered loans, 60 days		0
Covered assets, 90 days		0
Total Past Due		$ 0
% based on $		0.00%
Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans		$ 6,598
Covered loans, current		5,502
Covered loans, 30 days		0
Covered loans, 60 days		0
Covered assets, 90 days		1,096
Total Past Due		$ 1,096
% based on $		16.61%
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans		$ 51,336
Covered loans, current		51,336
Covered loans, 30 days		0
Covered loans, 60 days		0
Covered assets, 90 days		0
Total Past Due		$ 0
% based on $		0.00%
Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans	$ 28	$ 5,492
Covered loans, current	28	5,492
Covered loans, 30 days	0	0
Covered loans, 60 days	0	0
Covered assets, 90 days	0	0
Total Past Due	$ 0	$ 0
% based on $	0.00%	0.00%
HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans	$ 9,214	$ 11,777
Covered loans, current	9,204	11,777
Covered loans, 30 days	10	0
Covered loans, 60 days	0	0
Covered assets, 90 days	0	0
Total Past Due	$ 10	$ 0
% based on $	0.11%	0.00%
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans		$ 454
Covered loans, current		443
Covered loans, 30 days		11
Covered loans, 60 days		0
Covered assets, 90 days		0
Total Past Due		$ 11
% based on $		2.42%

Derivatives and Hedging Activ51

Derivatives and Hedging Activities (Details) - USD ($)	9 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
Interest rate swap agreements
Derivative [Line Items]
Notional amount	$ 736,232,000	$ 264,169,000
Gain (loss) on derivative instruments	0
Fee income included in miscellaneous loan fees	937,000
Other assets | Interest rate contracts
Derivative [Line Items]
Asset derivatives, fair value	5,429,000	2,879,000
Other liabilities | Interest rate contracts
Derivative [Line Items]
Liability derivatives, fair value	5,429,000	2,879,000
Forward Contracts | Interest rate swap agreements
Derivative [Line Items]
Notional amount	400,000,000
Gain (loss) recognized in other comprehensive income (loss), effective portion, net	(2,476,000)
Forward Contracts | Other assets | Interest rate contracts
Derivative [Line Items]
Asset derivatives, fair value	0	0
Forward Contracts | Other liabilities | Interest rate contracts
Derivative [Line Items]
Liability derivatives, fair value	$ 3,914,000	$ 268,000