CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities
Interest received	$ 108,041	$ 85,115
Fees and commissions received	26,761	23,833
Interest paid	(5,693)	(5,091)
Cash paid to suppliers and employees	(86,824)	(71,573)
Origination of loans designated held for sale	(132,482)	(159,662)
Sale of loans designated held for sale	136,337	155,002
Net change in other assets	(5,274)	(578)
Net cash provided by operating activities	40,866	27,046
Cash flows from investing activities
Maturity of securities available for sale	93,538	93,830
Maturity of securities held for investment	29,582	23,115
Proceeds from sale of securities available for sale	39,408	60,314
Purchases of securities available for sale	(159,576)	(87,468)
Purchases of securities held for investment	(218,654)	(24,366)
Net new loans and principal repayments	(280,915)	(172,858)
Proceeds from the sale of other real estate owned	4,987	4,688
(FHLB) and Federal Reserve Bank stock	1,700	7,427
Purchase of FHLB and Federal Reserve Stock	(16,213)	(6,798)
Net cash from bank acquisition	235,546	32,927
Additions to bank premises and equipment	(5,099)	(8,466)
Net cash (used in) provided by investing activities	(275,696)	(77,655)
Cash flows from financing activities
Net increase in deposits	14,598	137,307
Net decrease in federal funds purchased and repurchase agreements	(4,312)	(6,690)
Net increase (decrease) in FHLB borrowings	255,000	(80,000)
Stock based employee benefit plans	860	94
Dividends paid	0	0
Net cash provided by financing activities	266,146	50,711
Net decrease in cash and cash equivalents	31,316	102
Cash and cash equivalents at beginning of period	136,067	100,539
Cash and cash equivalents at end of period	167,383	100,641
Reconciliation of net income to cash provided by operating activities
Net income	18,431	16,105
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	3,774	2,722
Amortization of premiums and discounts on securities, net	6,381	3,061
Other amortization and accretion, net	(1,862)	(1,895)
Change in loans held for sale, net	3,855	(4,660)
Provision for loan losses	1,411	2,275
Gain on sale of securities	(361)	(160)
Gain on sale of loans	(935)	(658)
Losses (gains) on sale and write-downs of other real estate owned	(348)	397
Losses on disposition of fixed assets	2,440	120
Change in interest receivable	(2,866)	(527)
Change in interest payable	297	24
Change in prepaid expenses	(889)	(1,097)
Change in accrued taxes	10,184	10,326
Change in other assets	(5,274)	(578)
Change in other liabilities	6,628	1,591
Net cash provided by operating activities	40,866	27,046
Supplemental disclosure of non cash investing activities:
Fair value adjustment to securities	15,985	3,711
Transfer from loans to other real estate owned	2,996	4,937
Transfer from bank premises to other real estate owned	7,708
Securities principal recorded as a receivable	$ 647	$ 96