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	$ 33,885	$ 24,981
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	400	1,100
Depreciation of premises and equipment	1,630	1,759
Net amortization of premium and discount	1,386	1,616
Amortization of intangibles	495	534
Goodwill impairment	0	150
Share-based compensation	1,319	1,198
Tax benefit from stock option exercises and other equity awards	352	350
Income from bank-owned life insurance	(1,052)	(1,078)
Net gains on loan sales and commissions on loans originated for others, including fair value adjustments	(5,465)	(5,052)
Proceeds from sales of loans	182,964	215,239
Loans originated for sale	(188,185)	(213,929)
Change in fair value of contingent consideration liability	0	(310)
(Increase) decrease in other assets	(16,777)	(6,237)
Increase (decrease) in other liabilities	11,815	1,110
Net cash provided by (used in) operating activities	22,767	21,431
Cash flows from investing activities:
Purchases of mortgage-backed securities available for sale	(61,619)	(35,213)
Purchases of other investment securities available for sale	(1,064)	(19,963)
Maturities and principal payments of mortgage-backed securities available for sale	41,270	38,861
Maturities and principal payments of other investment securities available for sale	6,795	8,955
Maturities and principal payments of mortgage-backed securities held to maturity	1,077	1,614
Remittance (purchases) of Federal Home Loan Bank stock	(5,764)	(1,511)
Net (increase) decrease in loans	(115,986)	33,596
Purchases of loans	(1,676)	0
Proceeds from the sale of property acquired through foreclosure or repossession	0	213
Purchases of premises and equipment	(1,675)	(1,247)
Purchases of bank-owned life insurance	(5,000)	0
Net cash provided by (used in) investing activities	(143,642)	25,305
Cash flows from financing activities:
Net increase (decrease) in deposits	78,904	(42,563)
Proceeds from Federal Home Loan Bank advances	1,135,000	657,500
Repayment of Federal Home Loan Bank advances	(1,025,303)	(636,697)
Payment for contingent consideration liability	(1,217)	0
Net proceeds from stock option exercises and issuance of other equity awards	(394)	166
Cash dividends paid	(14,346)	(13,007)
Net cash provided by (used in) financing activities	172,644	(34,601)
Net increase (decrease) in cash and cash equivalents	51,769	12,135
Cash and cash equivalents at beginning of period	82,923	107,797
Cash and cash equivalents at end of period	134,692	119,932
Noncash Investing and Financing Activities:
Loans charged off	793	721
Loans transferred to property acquired through foreclosure or repossession	3,074	576
Supplemental Disclosures:
Interest payments	17,576	14,111
Income tax payments	$ 8,570	$ 11,849