Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income	$ 25,363	$ 27,455
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	1,400	3,650
Depreciation and amortization of premises and equipment	2,871	2,858
Net (accretion) and other amortization	(1,803)	(5,771)
Net amortization on securities	3,278	4,865
Increase in cash surrender value of bank owned life insurance	(1,658)	(1,690)
Amortization of intangible assets	703	800
Share based compensation expense	2,689	1,972
Net securities losses (gains)	7,921	(260)
Increase in accrued interest receivable	(141)	(772)
Small Business Administration ("SBA") loans originated for sale	(22,126)	(15,523)
Proceeds from sale of the guaranteed portion of SBA loans	22,453	17,290
Gain on sale of the guaranteed portion of SBA loans	(1,586)	(1,442)
(Gain) loss on sale of loans	(411)	33
Increase in other assets	(3,816)	(664)
Increase in accrued expenses and other liabilities	5,581	3,824
Net cash provided by operating activities	40,718	36,625
Cash flows from investing activities:
Purchases of securities available for sale	(224,600)	(87,916)
Purchases of securities, restricted	(493,347)	(404,267)
Purchases of securities held to maturity	(1,000)	(3,628)
Proceeds from sales of securities available for sale	230,372	26,685
Redemption of securities, restricted	503,534	404,776
Maturities, calls and principal payments of securities available for sale	72,535	89,630
Maturities, calls and principal payments of securities held to maturity	16,760	36,390
Net increase in loans	(134,808)	(319,312)
Proceeds from loan sale	40,133	2,574
Purchase of premises and equipment	(5,259)	(2,595)
Net cash provided by (used in) investing activities	4,320	(257,663)
Cash flows from financing activities:
Net increase in deposits	284,631	277,345
Net decrease in federal funds purchased	(50,000)	(50,000)
Net decrease in federal funds purchased	(235,641)	(19,733)
Repayment of junior subordinated debentures		(352)
Net (decrease) increase in repurchase agreements	(61)	172
Net proceeds from issuance of common stock	705	721
Repurchase of surrendered stock from vesting of restricted stock awards	(569)	(330)
Cash dividends paid	(13,749)	(13,670)
Net cash (used in) provided by financing activities	(14,684)	194,153
Net increase (decrease) in cash and cash equivalents	30,354	(26,885)
Cash and cash equivalents at beginning of period	94,747	113,838
Cash and cash equivalents at end of period	125,101	86,953
Cash paid for:
Interest	23,902	17,660
Income taxes	2,474	4,195
Non-cash investing and financing activities:
Conversion of junior subordinated debentures		$ 15,350
Transfers from portfolio loans to other real estate owned	$ 175