CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
OPERATING ACTIVITIES:
Net income	$ 17,774	$ 12,134
Adjustments to reconcile net income to net cash provided from operating activities:
Depreciation	2,859	2,002
Deferred income and expense, net of amortization	1,158	885
Amortization of core deposit intangibles	1,808	616
(Gain) loss on sale of securities	(21)	510
Net change in valuation of financial instruments carried at fair value	(29)	(1,050)
Purchases of securities—trading	(1,725)	0
Proceeds from sales of securities—trading	0	2,290
Principal repayments and maturities of securities—trading	1,946	679
Decrease in deferred taxes	(8,745)	(1,344)
Increase (decrease) in current taxes payable	2,540	(3,555)
Equity-based compensation	876	539
Increase in cash surrender value of BOLI	(1,169)	(432)
Gain on sale of loans, net of capitalized servicing rights	(3,873)	(2,692)
Loss (gain) on disposal of real estate held for sale and property and equipment	427	(122)
Provision for losses on real estate held for sale	205	0
Origination of loans held for sale	(202,471)	(137,290)
Proceeds from sales of loans held for sale	205,023	133,349
Net change in:
Other assets	(15,571)	(4,703)
Other liabilities	2,894	776
Net cash provided from operating activities	21,396	5,280
INVESTING ACTIVITIES:
Purchases of securities—available-for-sale	(123,197)	(22,622)
Principal repayments and maturities of securities—available-for-sale	41,376	29,255
Proceeds from sales of securities—available-for-sale	30,566	22,310
Purchases of securities—held-to-maturity	(26,991)	(7,664)
Principal repayments and maturities of securities—held-to-maturity	843	4,972
Loan originations, net of principal repayments	57,558	(1,805)
Purchases of loans and participating interest in loans	(70,551)	(41,684)
Proceeds from sales of other loans	144,499	15,000
Net cash received from acquisitions	0	78,599
Purchases of property and equipment	(4,331)	(1,418)
Proceeds from sale of real estate held for sale, net	4,666	1,738
Proceeds from FHLB stock repurchase program	19,624	2,029
Purchase of FHLB stock	(16,914)	0
Other	1,276	37
Net cash provided from investing activities	58,424	78,747
FINANCING ACTIVITIES:
Increase (decrease) in deposits, net	(25,206)	104,061
Repayment of FHLB advances	422,200	222,500
Payments for Federal Home Loan Bank Advances	479,802	254,502
Increase in other borrowings, net	7,807	19,835
Cash dividends paid	(6,166)	(3,512)
Cash proceeds from issuance of common stock for shareholder reinvestment plan	0	34
Net cash provided from (used by) financing activities	(81,167)	88,416
NET CHANGE IN CASH AND CASH EQUIVALENTS	(1,347)	172,443
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	261,917	126,072
CASH AND CASH EQUIVALENTS, END OF PERIOD	260,570	298,515
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid in cash	4,349	2,576
Taxes paid, net of refunds received in cash	2,581	8,935
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	135	690
ACQUISITIONS (Note 3):
Assets acquired	0	370,306
Liabilities assumed	$ 0	$ 327,548