Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities
Net Income	$ 40,082	$ 36,724
Adjustment to reconcile net income to net cash provided by operating activities:
Provision for credit losses	8,818	8,621
Deferred tax expense	12,520	6,207
Depreciation and amortization	5,750	11,659
Net gains on securities and other assets	(952)	(3,137)
Net amortization of premiums and discounts on securities	2,012	1,610
Net accretion of premiums and discounts on long term debt	0	(37)
Income from increase in cash surrender value of bank owned life insurance	(4,089)	(3,904)
Increase in interest receivable	(167)	(339)
Mortgage loans originated for sale	(67,708)	(3,810)
Proceeds from sale of mortgage loans	67,071	2,569
Decrease in interest payable	(173)	(476)
(Decrease) increase in income taxes payable	(22)	1,157
Other-net	(10,757)	772
Net cash provided by operating activities	52,385	57,616
Investing Activities
Proceeds from sale and maturity of held-to-maturity securities	3,828	0
Payments to acquire held-to-maturity securities	(156,756)	0
Proceeds from Sale of Available-for-sale Securities	0	132,868
Proceeds from maturities and redemptions of available-for-sale securities	286,924	199,580
Purchases of available-for-sale securities	(16,600)	(325,955)
Purchases of FHLB stock	(46,911)	(32,115)
Proceeds from the redemption of FHLB stock	36,980	16,565
Proceeds from bank owned life insurance	378	1,776
Proceeds from sale of loans	2,898	3,112
Proceeds from sale of other assets	3,668	11,314
Net increase in loans	(140,268)	(146,863)
Purchases of premises and equipment	(3,740)	(9,781)
Net cash used in investing activities	(29,599)	(149,499)
Financing Activities
Net increase in federal funds purchased	11,000	3,500
Net increase in other short-term borrowings	212,918	404,852
Net decrease in deposits	(154,018)	(231,475)
Repayments of other long-term debt	(50,407)	(32,808)
Proceeds from Issuance of Long-term Debt	0	5,000
Discount on dividend reinvestment plan purchases	0	(65)
Dividends paid	(18,862)	(19,754)
Proceeds from reissuance of treasury stock	192	192
Purchase of treasury stock	(25,383)	(30,928)
Net cash (used in) provided by financing activities	(24,560)	98,514
Net (decrease) increase in cash and cash equivalents	(1,774)	6,631
Cash and cash equivalents at January 1	74,538	77,439
Cash and cash equivalents at September 30	$ 72,764	$ 84,070