Statement of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 39,358	$ 33,548
Proceeds from Sale of Loans Held-for-sale	104,175	118,629
Originations of loans held for sale	(95,384)	(115,039)
Items not requiring (providing) cash:
Depreciation	6,901	7,416
Amortization	2,064	2,784
Compensation expense for stock option grants	412	348
Provision for loan losses	7,150	6,901
Net gains on loan sales	(2,343)	(3,062)
Net realized gains on sale of available-for-sale investment securities	0	(2,881)
Net (gains) losses on sale of premises and equipment	183	(248)
Net Loss on Sale Write-Down of Other Real Estate Owned	211	38
Gain on sale of business units	0	(368)
Net Gain (Loss) on Termination of Loss Sharing Agreements	(7,704)	584
Amortization (accretion) of deferred income, premiums, discounts and other	(1,492)	4,797
Loss on derivative interest rate products	5	179
Deferred income taxes	(3,686)	(3,070)
Changes In:
Interest receivable	669	665
Prepaid expenses and other assets	(271)	10,284
Accrued expenses and other liabilities	787	(1,834)
Income taxes refundable/payable	841	6,702
Net cash provided by operating activities	51,876	66,373
CASH FLOWS FROM INVESTING ACTIVITIES
Net change in loans	136,205	(69,439)
Purchase of loans	(203,294)	(136,769)
Cash received from purchase of additional business units	0	44,363
Cash Received from FDIC Loss Sharing Reimbursements	16,245	(51)
Cash paid for sale of business units	0	(17,821)
Purchase of premises and equipment	(4,546)	(8,221)
Proceeds from sale of premises and equipment	521	1,078
Proceeds from sale of other real estate owned	22,788	19,923
Capitalized costs on other real estate owned	(117)	(86)
Proceeds from sales of available-for-sale securities	0	49,615
Proceeds from maturities and calls of held-to-maturity securities	117	0
Proceeds from maturities and calls of available-for-sale securities	9,579	28,016
Principal reductions on mortgage-backed securities	19,834	25,390
Purchase of available-for-sale securities	0	(45,661)
Redemption (purchase) of Federal Home Loan Bank stock	(248)	3,028
Net cash used in investing activities	(2,916)	(106,635)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase (decrease) in certificates of deposit	(121,438)	115,632
Net increase (decrease) in checking and savings deposits	42,563	(32,279)
Proceeds from Federal Home Loan Bank advances	889,000	1,793,000
Repayments of Federal Home Loan Bank advances	(746,435)	(2,025,052)
Net increase (decrease) in short-term borrowings	(132,424)	174,627
Advances from borrowers for taxes and insurance	4,182	4,472
Proceeds from issuance of subordinated notes	0	73,472
Dividends paid	(9,523)	(9,171)
Stock options exercised	2,018	947
Net cash provided by (used in) financing activities	(72,057)	95,648
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(23,097)	55,386
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	279,769	199,183
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 256,672	$ 254,569