Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows From Operating Activities:
Net Income	$ 47,467,000	$ 40,356,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for Credit Losses	6,931,000	6,781,000
Depreciation and amortization	3,100,000	6,005,000
Gains on sale of loans	(5,455,000)	(6,881,000)
Securities premium amortization (discount accretion), net	2,335,000	1,346,000
Origination of loans held for sale	(343,959,000)	(553,838,000)
Proceeds from sale of loans held for sale	337,583,000	472,353,000
Net increase in cash surrender value of BOLI	(780,000)	(796,000)
Increase in deferred income taxes	(1,010,000)	(1,653,000)
Decrease in value of other real estate owned	200,000	750,000
Net (gain) loss on sale of other real estate owned	(563,000)	165,000
Net gain on sale of investment securities	(1,122,000)	(2,164,000)
Loss on early extinguishment of debt		1,130,000
Stock-based compensation expense	3,312,000	2,407,000
Tax benefits realized from stock compensation	(140,000)	(1,867,000)
Increase in other assets	(5,542,000)	(6,826,000)
Increase (decrease) in other liabilities	3,959,000	(68,000)
Net cash provided by (used in) operating activities	46,316,000	(42,800,000)
Cash Flows From Investing Activities:
Decrease in interest bearing deposits with other banks and short-term investments	764,000	436,000
Purchases of available for sale investment securities	(57,550,000)	(132,871,000)
Proceeds from maturities of available for sale securities	45,462,000	27,121,000
Proceeds from sale/call of available for sale securities	87,717,000	65,701,000
Purchases of Federal Reserve and Federal Home Loan Bank stock	(2,961,000)	(2,368,000)
Proceeds from redemption of Federal Reserve and Federal Home Loan Bank stock		(8,100,000)
Net increase in loans	(408,686,000)	(243,933,000)
Proceeds from sale of other real estate owned	3,062,000	986,000
Purchases of BOLI		(499,000)
Purchases of annuities		(992,000)
Bank premises and equipment acquired	(2,448,000)	(739,000)
Net cash used in investing activities	(334,640,000)	(279,058,000)
Cash Flows From Financing Activities:
Increase in deposits	177,544,000	514,665,000
Increase (decrease) in customer repurchase agreements	8,152,000	(7,726,000)
Issuance of common stock		94,633,000
Increase (decrease) in short-term borrowings	50,000,000	(100,000,000)
Decrease in long-term borrowings		(45,250,000)
Payment of dividends on preferred stock		(358,000)
Proceeds from exercise of stock options	252,000	4,534,000
Tax benefits realized from stock compensation	140,000	1,867,000
Payment in lieu of fractional shares		(4,000)
Proceeds from employee stock purchase plan	371,000	368,000
Net cash provided by financing activities	236,459,000	462,729,000
Net (Decrease) Increase In Cash and Cash Equivalents	(51,865,000)	140,871,000
Cash and Cash Equivalents at Beginning of Period	298,363,000	256,025,000
Cash and Cash Equivalents at End of Period	246,498,000	396,896,000
Supplemental Cash Flows Information:
Interest paid	10,981,000	9,913,000
Income taxes paid	33,650,000	27,950,000
Non-Cash Investing Activities
Transfers from loans to other real estate owned		1,500,000
Transfers from other real estate owned to loans		$ 2,192,000