Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 18,816	$ 18,012
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	1,200	1,750
Depreciation and amortization of premises and equipment	1,897	1,900
Net (accretion) and other amortization	(1,444)	(3,949)
Net amortization on securities	2,507	3,291
Increase in cash surrender value of bank owned life insurance	(1,101)	(1,127)
Amortization of intangible assets	488	553
Share based compensation expense	1,787	1,324
Net securities losses	7,921
Decrease in accrued interest receivable	27	504
Small Business Administration ("SBA") loans originated for sale	(19,446)	(14,483)
Proceeds from sale of the guaranteed portion of SBA loans	14,417	16,123
Gain on sale of the guaranteed portion of SBA loans	(1,062)	(1,342)
Gain on sale of loans	(322)
Decrease (increase) in other assets	279	(2,203)
Increase in accrued expenses and other liabilities	2,929	3,636
Net cash provided by operating activities	28,893	23,989
Cash flows from investing activities:
Purchases of securities available for sale	(194,835)	(73,916)
Purchases of securities, restricted	(481,422)	(303,890)
Purchases of securities held to maturity	(1,000)	(2,031)
Proceeds from sales of securities available for sale	230,372
Redemption of securities, restricted	490,024	299,814
Maturities, calls and principal payments of securities available for sale	50,431	59,170
Maturities, calls and principal payments of securities held to maturity	11,696	20,756
Net increase in loans	(118,281)	(192,825)
Proceeds from loan sale	40,133
Purchase of premises and equipment	(4,435)	(1,685)
Net cash provided by (used in) investing activities	22,683	(194,607)
Cash flows from financing activities:
Net increase in deposits	218,676	133,646
Net decrease in federal funds purchased	(50,000)	(50,000)
Net (decrease) increase in Federal Home Loan Bank advances	(200,427)	67,479
Repayment of junior subordinated debentures		(352)
Net increase in repurchase agreements	560	57
Net proceeds from issuance of common stock	468	469
Repurchase of surrendered stock from vesting of restricted stock awards	(552)	(264)
Cash dividends paid	(9,157)	(9,103)
Net cash (used in) provided by financing activities	(40,432)	141,932
Net increase (decrease) in cash and cash equivalents	11,144	(28,686)
Cash and cash equivalents at beginning of period	94,747	113,838
Cash and cash equivalents at end of period	105,891	85,152
Cash paid for:
Interest	14,382	10,498
Income taxes	2,471	165
Non-cash investing and financing activities:
Conversion of junior subordinated debentures		$ 15,350
Transfers from portfolio loans to other real estate owned	$ 175