CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OPERATING ACTIVITIES
Net income	$ 40,847	$ 38,723	$ 20,018
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	8,058	6,642	4,938
Amortization of intangible assets	3,741	2,330	1,414
Net amortization of investment securities available for sale	5,881	3,666	3,191
Net gains on securities available for sale	(137)	(138)	(171)
Stock based compensation expense	1,485	2,057	1,041
Net (gains) losses on sale or disposal of premises and equipment	184	(516)	(55)
Net write-downs and losses on sale of other real estate owned	15,696	4,950	9,162
Provision for loan losses	5,264	5,648	11,486
Accretion of discount on covered loans	(9,658)	(22,188)	(42,208)
Accretion of discount on purchased non-covered loans	(10,590)	(9,745)	0
Changes in FDIC loss-share receivable, net of cash payments received	5,777	11,596	25,461
Increase in cash surrender value of BOLI	(1,384)	(1,623)	(1,223)
Provision for deferred taxes	(344)	6,516	3,543
(Increase)/decrease in interest receivable	(4,251)	(1,952)	(1,395)
Increase/(decrease) in interest payable	(327)	(49)	199
Increase/(decrease) in taxes payable	9,033	(7,221)	(1,420)
Originations of mortgage loans held for sale	(1,038,691)	(687,090)	(525,376)
Proceeds from sales of mortgage loans held for sale	991,310	695,429	524,559
Net gains on mortgage loans held for sale	(40,389)	(28,532)	(17,675)
Originations of SBA loans	(54,594)	(58,089)	(12,486)
Proceeds from sales of SBA loans	39,484	32,782	15,754
Net gains on sale of SBA loans	(4,522)	(3,896)	(1,500)
Decrease in prepaid FDIC assessments	0	0	2,843
Change attributable to other operating activities	12,904	5,104	1,749
Net cash provided by (used in) operating activities	(25,223)	(5,596)	21,849
INVESTING ACTIVITIES, net of effects of business combinations
Purchases of securities available for sale	(249,115)	(126,909)	(90,033)
Proceeds from maturities of securities available for sale	89,030	51,215	50,490
Proceeds from sale of securities available for sale	72,528	94,051	36,669
(Increase)/decrease in restricted equity securities, net	1,824	8,028	(1,269)
Net increase in loans, excluding purchased non-covered and covered loans	(413,775)	(251,955)	(183,731)
Purchase of loan pools	(622,533)	0	0
Payments received on purchased non-covered loans	154,666	74,931	943
Payments received on covered loans	79,372	102,996	120,155
Purchase of premises and equipment	(12,576)	(5,709)	(5,634)
Proceeds from sale of premises and equipment	244	1,213	2,114
Purchase of bank owned life insurance	(4,000)	0	(30,000)
Proceeds from sale of other real estate owned	43,269	43,793	68,917
Payments received from FDIC under loss-sharing agreements	19,273	22,494	68,822
Net cash proceeds received from acquisitions	673,933	17,022	25,810
Net cash provided by (used in) investing activities	(167,860)	31,170	63,253
FINANCING ACTIVITIES, net of effects of business combinations
Net increase (decrease) in deposits	353,984	62,894	(99,115)
Net increase (decrease) in securities sold under agreements to repurchase	(9,725)	(15,634)	11,866
Repayment of other borrowings	(39,881)	(257,060)	(177,741)
Proceeds from other borrowings	0	118,963	175,000
Dividends paid - preferred stock	0	(286)	(1,400)
Dividends paid - common stock	(6,439)	(4,016)	0
Redemption of preferred stock	0	(28,000)	0
Issuance of common stock	114,889	0	0
Proceeds from exercise of stock options	1,191	459	410
Purchase of treasury shares	(732)	(474)	(116)
Net cash provided by (used in) financing activities	413,287	(123,154)	(91,096)
Net increase (decrease) in cash and due from banks	220,204	(97,580)	(5,994)
Cash and cash equivalents at beginning of period	170,359	267,939	273,933
Cash and cash equivalents at end of period	390,563	170,359	267,939
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the year for: Interest	15,183	14,667	9,938
Cash paid during the year for: Income taxes	5,828	19,281	16,925
Loans (excluding purchased non-covered and covered loans) transferred to other real estate owned	11,261	11,972	9,137
Purchased non-covered loans transferred to other real estate owned	4,473	4,160	0
Covered loans transferred to other real estate owned	7,910	13,650	31,833
Loans transferred from mortgage loans available for sale to loans	71,347	0	0
Loans provided for the sales of other real estate owned	4,826	1,109	2,416
Assets acquired in business combinations	1,169,990	448,971	745,027
Liabilities assumed in business combinations	1,099,988	411,701	720,236
Issuance of common stock in acquisitions	0	34,474	24,629
Change in unrealized gain (loss) on securities available for sale, net	(2,389)	7,281	(8,321)
Change in unrealized gain on cash flow hedge (interest rate swap), net	$ (356)	$ (889)	$ 1,420