CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
OPERATING ACTIVITIES:
Net income	$ 62,581	$ 38,329
Adjustments to reconcile net income to net cash provided from operating activities:
Depreciation	9,219	6,279
Deferred income and expense, net of amortization	419	2,194
Amortization of core deposit intangibles	5,339	1,268
(Gain) loss on sale of securities	(531)	537
Net change in valuation of financial instruments carried at fair value	1,472	(735)
Purchases of securities—trading	(1,725)	(6,337)
Proceeds from sales of securities—trading	1,682	2,485
Principal repayments and maturities of securities—trading	3,527	7,905
Decrease in deferred taxes	(10,747)	(97)
Increase in current taxes payable	2,108	2,800
Equity-based compensation	3,129	1,944
Increase in cash surrender value of BOLI	(3,628)	(1,425)
Gain on sale of loans, net of capitalized servicing rights	(14,583)	(8,139)
Gain on disposal of real estate held for sale and property and equipment	(748)	(338)
Provision for loan losses	4,000	0
Provision for losses on real estate held for sale	804	216
Origination of loans held for sale	(753,714)	(455,178)
Proceeds from sales of loans held for sale	691,355	462,967
Net change in:
Other assets	(20,428)	(5,888)
Other liabilities	13,560	1,625
Net cash provided from operating activities	14,585	50,606
INVESTING ACTIVITIES:
Purchases of securities—available-for-sale	(242,222)	(93,508)
Principal repayments and maturities of securities—available-for-sale	143,244	57,301
Proceeds from sales of securities—available-for-sale	233,252	40,293
Purchases of securities—held-to-maturity	(60,344)	(11,490)
Principal repayments and maturities of securities—held-to-maturity	7,458	9,609
Loan originations, net of principal repayments	(34,328)	(78,947)
Purchases of loans and participating interest in loans	(230,778)	(243,282)
Proceeds from sales of other loans	193,939	29,238
Net cash received from acquisitions	0	78,599
Purchases of property and equipment	(9,223)	(9,847)
Proceeds from sale of real estate held for sale, net	8,021	3,155
Proceeds from FHLB stock repurchase program	70,237	21,453
Purchase of FHLB stock	(67,006)	(648)
Other	1,922	241
Net cash provided from (used by) investing activities	14,172	(197,833)
FINANCING ACTIVITIES:
Increase in deposits, net	56,904	172,298
Repayment of FHLB advances	70,607	15,806
Increase in other borrowings, net	10,586	10,899
Cash dividends paid	(20,542)	(11,031)
Cash proceeds from issuance of common stock for shareholder reinvestment plan	0	34
Cash paid for the repurchase of common stock	(21,098)	0
Net cash (used by) provided from financing activities	(44,757)	156,394
NET CHANGE IN CASH AND CASH EQUIVALENTS	(16,000)	9,167
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	261,917	126,072
CASH AND CASH EQUIVALENTS, END OF PERIOD	245,917	135,239
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid in cash	12,781	7,825
Taxes paid, net of refunds received in cash	23,751	16,491
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	758	3,251
ACQUISITIONS (Note 3):
Assets acquired	0	370,306
Liabilities assumed	$ 0	$ 327,548