CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 37,943	$ 34,319
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	2,400	2,750
Depreciation of premises and equipment	2,613	2,737
Net amortization of premium and discount	2,560	1,802
Amortization of intangibles	787	966
Goodwill impairment	150	0
Share-based compensation	1,872	1,634
Tax benefit from stock option exercises and other equity awards	414	430
Income from bank-owned life insurance	(1,624)	(2,110)
Net gains on loan sales and commissions on loans originated for others, including fair value adjustments	(8,004)	(8,682)
Net gain on sale of portfolio loans	0	(135)
Equity in (earnings) losses of unconsolidated subsidiaries	266	265
Proceeds from sales of loans	345,539	370,526
Loans originated for sale	(337,772)	(369,746)
Change in fair value of contingent consideration liability	(310)	(898)
(Increase) decrease in other assets	(9,814)	(22,719)
Increase (decrease) in other liabilities	6,537	17,635
Net cash provided by (used in) operating activities	43,557	28,774
Cash flows from investing activities:
Purchases of mortgage-backed securities available for sale	(35,213)	(248,221)
Purchases of other investment securities available for sale	(19,963)	(70,495)
Maturities and principal payments of mortgage-backed securities available for sale	62,745	41,446
Maturities and principal payments of other investment securities available for sale	21,269	89,441
Maturities and principal payments of mortgage-backed securities held to maturity	2,283	3,029
Remittance (purchases) of Federal Home Loan Bank stock	956	(12,933)
Net decrease (increase) in loans	(88,914)	(95,759)
Net proceeds from sale of portfolio loans	0	510
Purchases of loans	(737)	(77,180)
Proceeds from the sale of property acquired through foreclosure or repossession	513	731
Purchases of premises and equipment	(2,184)	(2,608)
Proceeds of bank-owned life insurance	0	(5,000)
Proceeds from Life Insurance Policy	0	2,054
Net cash provided by (used in) investing activities	(59,245)	(374,985)
Cash flows from financing activities:
Net increase (decrease) in deposits	93,329	103,119
Proceeds from Federal Home Loan Bank advances	1,000,000	981,250
Repayment of Federal Home Loan Bank advances	(1,034,885)	(688,608)
Net proceeds from stock option exercises and issuance of other equity awards	194	282
Cash dividends paid	(19,567)	(18,291)
Net cash provided by (used in) financing activities	39,071	377,752
Net increase (decrease) in cash and cash equivalents	23,383	31,541
Cash and cash equivalents at beginning of period	107,797	97,631
Cash and cash equivalents at end of period	131,180	129,172
Noncash Investing and Financing Activities:
Loans charged off	1,415	4,390
Loans transferred to property acquired through foreclosure or repossession	576	1,045
Supplemental Disclosures:
Interest payments	21,512	16,093
Income tax payments	$ 19,272	$ 14,860