Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Proceeds from Sale of Loans Receivable	$ 8,501	$ 213
Operating Activities
Net Income	29,901	24,480
Provision for credit losses	1,620	16,898
Deferred tax expense	3,968	1,909
Depreciation and amortization	4,414	3,481
Net gains on securities and other assets	(2,209)	(372)
Net amortization of premiums and discounts on securities	1,782	2,264
Income from increase in cash surrender value of bank owned life insurance	(2,741)	(2,607)
Decrease (increase) in interest receivable	242	(315)
Mortgage loans originated for sale	(70,521)	(56,139)
Proceeds from sale of mortgage loans	71,464	55,251
Increase (decrease) in interest payable	857	(84)
Decrease in income taxes payable	(764)	(2,534)
Other-net	3,729	(4,758)
Net cash provided by operating activities	41,742	37,474
Investing Activities
Proceeds from sale and maturity of held-to-maturity securities	22,227	18,601
Payments to acquire held-to-maturity securities	(101,372)	(40,161)
Proceeds from Sale of Available-for-sale Securities	103,618	55,744
Proceeds from maturities and redemptions of available-for-sale securities	66,189	82,527
Purchases of available-for-sale securities	(85,220)	(94,777)
Purchases of FHLB stock	(22,329)	(20,324)
Proceeds from the redemption of FHLB stock	27,736	25,189
Proceeds from sale of other assets	2,744	3,621
Increase in Restricted Cash	3,188	0
Net increase in loans	(125,791)	(173,817)
Payments for Purchase of Other Assets	(547)	(204)
Purchases of premises and equipment	(3,939)	(4,201)
Net cash used in investing activities	(104,995)	(147,589)
Financing Activities
Net decrease in federal funds purchased	0	(4,000)
Net decrease in other short-term borrowings	(21,806)	(42,138)
Net increase in deposits	101,501	198,838
Repayments of other long-term debt	(291)	(280)
Dividends paid	(14,917)	(12,451)
Proceeds from Sale of Treasury Stock	228	216
Purchase of treasury stock	(1,141)	(902)
Net cash provided by financing activities	63,488	139,283
Net increase in cash and cash equivalents	235	29,168
Cash and cash equivalents at January 1	115,677	69,452
Cash and cash equivalents at June 30	115,912	98,620
Repayments of Long-term Capital Lease Obligations	$ 86	$ 0