Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Assets
Cash and due from banks	$ 113,789	$ 142,152
Interest-bearing bank deposits	156,379	382,459
Cash and cash equivalents	270,168	524,611
Securities available for sale	1,371,558	1,317,386
Loans, net of unearned discounts and deferred fees, including $68,553 and $73,272 of loans covered by FDIC loss share agreements at December 31, 2016 and September 30, 2016, respectively, and $1,078,465 and $1,131,111 of loans and written loan commitments at fair value under the fair value option at December 31, 2016 and September 30, 2016, respectively, and $9,086 and $12,918 of loans held for sale at December 31, 2016 and September 30, 2016, respectively	8,779,107	8,682,644
Allowance for loan and lease losses	(66,767)	(64,642)
Net loans	8,712,340	8,618,002
Premises and equipment, including $8,067 and $8,112 of property held for sale at December 31, 2016 and September 30, 2016, respectively	117,484	118,506
Accrued interest receivable	49,357	49,531
Other repossessed property, including $40 and $106 of property covered by FDIC loss share arrangements at December 31, 2016 and September 30, 2016, respectively	8,093	10,282
FDIC indemnification asset	9,887	10,777
Goodwill	739,023	739,023
Core deposits and other intangibles	10,893	11,732
Loan servicing rights	5,278	5,781
Cash surrender value of life insurance policies	29,387	29,166
Net deferred tax assets	47,321	38,346
Other assets	51,828	58,037
Total assets	11,422,617	11,531,180
Deposits
Noninterest-bearing	1,954,881	1,880,512
Interest-bearing	6,751,366	6,724,278
Total deposits	8,706,247	8,604,790
Securities sold under agreements to repurchase	142,741	141,688
FHLB advances and other borrowings	711,029	871,037
Subordinated debentures and subordinated notes payable	108,178	111,873
Fair value of derivatives	17,882	81,515
Accrued interest payable	4,592	4,074
Accrued expenses and other liabilities	53,310	52,812
Total liabilities	9,743,979	9,867,789
Stockholders’ equity
Common stock, $0.01 par value, authorized 500,000,000 shares; 58,755,989 shares issued and outstanding at December 31, 2016 and 58,693,304 shares issued and outstanding at September 30, 2016	587	587
Additional paid-in capital	1,313,982	1,312,347
Retained earnings	371,845	344,923
Accumulated other comprehensive income (loss)	(7,776)	5,534
Total stockholders' equity	1,678,638	1,663,391
Total liabilities and stockholders' equity	$ 11,422,617	$ 11,531,180