CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
OPERATING ACTIVITIES:
Net income	$ 38,731	$ 25,383
Adjustments to reconcile net income to net cash provided from operating activities:
Depreciation	6,049	4,098
Deferred income and expense, net of amortization	415	1,307
Amortization of core deposit intangibles	3,615	983
Loss on sale of securities	359	537
Net change in valuation of financial instruments carried at fair value	348	(1,847)
Purchases of securities—trading	(1,725)	0
Proceeds from sales of securities—trading	0	2,485
Principal repayments and maturities of securities—trading	2,252	7,263
Increase (decrease) in deferred taxes	(11,759)	46
Increase (decrease) in current taxes payable	3,755	(982)
Equity-based compensation	1,910	1,313
Increase in cash surrender value of BOLI	(2,296)	(880)
Gain on sale of loans, net of capitalized servicing rights	(8,501)	(5,548)
Gain on disposal of real estate held for sale and property and equipment	(440)	(225)
Provision for losses on real estate held for sale	636	182
Origination of loans held for sale	(464,777)	(289,311)
Proceeds from sales of loans held for sale	406,251	296,490
Net change in:
Other assets	(20,367)	(3,024)
Other liabilities	7,362	(1,394)
Net cash (used by) provided from operating activities	(14,664)	36,784
INVESTING ACTIVITIES:
Purchases of securities—available-for-sale	(215,497)	(51,600)
Principal repayments and maturities of securities—available-for-sale	90,177	45,548
Proceeds from sales of securities—available-for-sale	96,785	40,293
Purchases of securities—held-to-maturity	(38,580)	(10,765)
Principal repayments and maturities of securities—held-to-maturity	3,551	9,188
Loan originations, net of principal repayments	(14,219)	(64,249)
Purchases of loans and participating interest in loans	(149,214)	(120,563)
Proceeds from sales of other loans	162,405	17,212
Net cash received from acquisitions	0	78,599
Purchases of property and equipment	(6,096)	(5,927)
Proceeds from sale of real estate held for sale, net	6,322	2,249
Proceeds from FHLB stock repurchase program	37,396	21,453
Purchase of FHLB stock	(44,685)	0
Other	1,319	(206)
Net cash used by investing activities	(70,336)	(38,768)
FINANCING ACTIVITIES:
(Decrease) increase in deposits, net	(135,293)	81,790
Proceeds from FHLB advances	1,164,000	222,500
Repayment of FHLB advances	971,604	254,504
Increase in other borrowings, net	13,983	17,338
Cash dividends paid	(13,347)	(7,272)
Cash proceeds from issuance of common stock for shareholder reinvestment plan	0	34
Net cash provided from financing activities	57,739	59,886
NET CHANGE IN CASH AND CASH EQUIVALENTS	(27,261)	57,902
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	261,917	126,072
CASH AND CASH EQUIVALENTS, END OF PERIOD	234,656	183,974
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid in cash	8,569	5,192
Taxes paid, net of refunds received in cash	11,025	13,610
NON-CASH INVESTING AND FINANCING TRANSACTIONS:
Loans, net of discounts, specific loss allowances and unearned income, transferred to real estate owned and other repossessed assets	592	2,166
ACQUISITIONS (Note 3):
Assets acquired	0	370,306
Liabilities assumed	$ 0	$ 327,548