Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating Activities
Net Income	$ 55,351	$ 29,901
Provision for credit losses	8,071	1,620
Deferred tax expense	1,468	3,968
Depreciation and amortization	3,262	4,414
Net gains on securities and other assets	(14,192)	(2,209)
Net amortization of premiums and discounts on securities	1,554	1,782
Income from increase in cash surrender value of bank owned life insurance	(2,941)	(2,741)
(Increase) decrease in interest receivable	(1,150)	242
Mortgage loans originated for sale	(83,265)	(70,521)
Proceeds from sale of mortgage loans	93,518	71,464
Increase in interest payable	383	857
Decrease in income taxes payable	(92)	(764)
Other-net	(10,362)	3,729
Net cash provided by operating activities	60,605	41,742
Investing Activities
Proceeds from sale and maturity of held-to-maturity securities	23,926	22,227
Payments to acquire held-to-maturity securities	(5,506)	(101,372)
Proceeds from Sale of Available-for-sale Securities	15,939	103,618
Proceeds from maturities and redemptions of available-for-sale securities	78,842	66,189
Purchases of available-for-sale securities	(218,885)	(85,220)
Purchases of FHLB stock	(25,110)	(22,329)
Proceeds from the redemption of FHLB stock	32,881	27,736
Proceeds from Life Insurance Policy	772	0
Proceeds from Sale of Loans Receivable	27,985	8,501
Proceeds from sale of other assets	1,434	2,744
Payments to Acquire Businesses, Net of Cash Acquired	507	3,188
Dividend from Unconsolidated Subsidiary	9,000	0
Net increase in loans	(78,435)	(125,791)
Payments for Purchase of Other Assets	(4,703)	(4,486)
Net cash used in investing activities	(150,353)	(104,995)
Financing Activities
Net increase in federal funds purchased	16,000	0
Net decrease in other short-term borrowings	(178,279)	(21,806)
Net increase in deposits	191,782	101,501
Repayments of other long-term debt	(23,290)	(291)
Repayments of Long-term Capital Lease Obligations	185	86
Proceeds from Issuance of Long-term Debt	98,120	0
Dividends paid	(16,835)	(14,917)
Proceeds from Sale of Treasury Stock	208	228
Purchase of treasury stock	(1,084)	(1,141)
Net cash provided by financing activities	86,437	63,488
Net (decrease) increase in cash and cash equivalents	(3,311)	235
Cash and cash equivalents at January 1	107,292	$ 115,677
Cash and cash equivalents at June 30	$ 103,981