Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Assets
Cash and due from banks	$ 142,152	$ 119,876
Interest bearing bank deposits	382,459	117,894
Cash and cash equivalents	524,611	237,770
Securities available for sale	1,317,386	1,327,327
Loans, net of unearned discounts and deferred fees, including $73,272 and $97,030 of loans covered by FDIC loss share agreements at September 30, 2016 and 2015, respectively, and $1,131,111 and $1,118,687 of loans and written loan commitments at fair value under the fair value option at September 30, 2016 and 2015, respectively, and $12,918 and $9,867 of loans held for sale at September 30, 2016 and 2015, respectively	8,682,644	7,325,198
Allowance for loan and lease losses	(64,642)	(57,200)
Net loans	8,618,002	7,267,998
Premises and equipment, including $8,112 and $0 of property held for sale at September 30, 2016 and September 30, 2015, respectively	118,506	97,550
Accrued interest receivable	49,531	44,077
Other repossessed property, including $106 and $61 of property covered by FDIC loss share arrangements at September 30, 2016 and 2015, respectively	10,282	15,892
FDIC indemnification asset	10,777	14,722
Goodwill	739,023	697,807
Core deposits and other intangibles	11,732	7,119
Loan servicing rights	5,781	0
Cash surrender value of life insurance policies	29,166	6,800
Net deferred tax assets	38,346	32,470
Other assets	58,037	49,122
Total assets	11,531,180	9,798,654
Deposits
Noninterest-bearing	1,880,512	1,368,453
Interest-bearing	6,724,278	6,018,612
Total deposits	8,604,790	7,387,065
Securities sold under agreements to repurchase	141,688	185,271
FHLB advances and other borrowings	871,037	581,000
Subordinated debentures and subordinated notes payable	111,873	90,727
Fair value of derivatives	81,515	53,613
Accrued interest payable	4,074	4,006
Accrued expenses and other liabilities	52,812	37,626
Total liabilities	9,867,789	8,339,308
Stockholders’ equity
Common stock, $0.01 par value, authorized 500,000,000 shares; 58,693,304 shares issued and outstanding at September 30, 2016 and 55,219,596 shares issued and outstanding at September 30, 2015	587	552
Additional paid-in capital	1,312,347	1,201,387
Retained earnings	344,923	255,089
Accumulated other comprehensive income	5,534	2,318
Total stockholders’ equity	1,663,391	1,459,346
Total liabilities and stockholders’ equity	$ 11,531,180	$ 9,798,654