CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 23,268	$ 18,010
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,802	7,023
Provision for loan losses	4,263	3,641
Net amortization of premium on securities	5,823	7,226
Securities gains, net	(1,441)	(2,482)
Unrealized loss on equity securities, net	28	0
Stock based compensation	1,858	1,782
Loans originated for sale	(112,433)	(164,324)
Proceeds on sales of loans held for sale	135,506	180,404
Net gains on sale of loans held for sale	(2,889)	(3,828)
Decrease in accrued interest receivable	3,239	93
Decrease in prepaid expenses	194	84
Increase in accrued interest payable	1,029	825
Capitalization of servicing rights	(1,183)	(2,226)
Valuation allowance on commercial servicing rights	2	(5)
(Gain)/loss on sales/valuations of assets, net	(197)	412
Net excess tax benefit from stock based compensation	611	888
Other, net	(5,441)	(13,767)
NET CASH PROVIDED BY OPERATING ACTIVITIES	59,039	33,756
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of securities available for sale	392,246	221,637
Proceeds from the redemption of time deposits in other financial institutions	8,767	5,867
Proceeds from the maturity of and principal paydowns on securities available for sale	49,603	47,515
Proceeds from the maturity of and principal paydowns on securities held to maturity	3,570	2,823
Proceeds from the maturity of and principal paydowns on time deposits in other financial institutions	4,368	3,185
Proceeds from the maturity of and principal paydowns on other investments	677	1,521
Purchase of securities available for sale	(244,289)	(312,769)
Purchase of other investments	(644)	(968)
Net (increase) decrease in loans	(32,314)	80,916
Capital expenditures	(2,356)	(3,588)
Net cash and cash equivalents received in acquisitions	5,543	33,698
Proceeds from the sale of equipment	615	3
Proceeds on sale of OREO and other repossessed assets	668	585
NET CASH PROVIDED BY INVESTING ACTIVITIES	186,454	80,425
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand deposits	5,834	22,799
Net increase in savings deposits	100,608	88,767
Net decrease in time deposit accounts	(69,143)	(50,612)
Proceeds on short-term revolving credit line	15,000	0
Net decrease in short-term borrowings	(168,451)	(131,068)
Proceeds from short term FHLB advances	220,000	60,939
Repayments of short term FHLB advances	(260,000)	(81,305)
Repayments of other borrowings	(14,995)	(6,432)
Purchase of treasury stock	(97)	(160)
Proceeds from issuance of common stock	14	218
Dividends paid	(3,920)	(2,900)
NET CASH USED BY FINANCING ACTIVITIES	(175,150)	(99,754)
Net increase in cash and cash equivalents	70,343	14,427
Cash and cash equivalents at beginning of year	196,003	158,724
CASH AND CASH EQUIVALENTS AT END OF PERIOD	266,346	173,151
Supplemental disclosures:
Cash paid for income/franchise taxes	2	5
Cash paid for interest	8,601	6,698
Loans transferred to OREO	939	2,680
Purchases of securities available for sale, accrued, not settled	0	3,654
Conversion of convertible debt to common stock	0	167
Conversion of Series D preferred stock to common stock	0	419
Stock consideration granted for acquisitions	$ 53,621	$ 22,589