CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
OPERATING ACTIVITIES:
Net income	$ 40,794	$ 35,903
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization on investment securities, net	231	425
Accretion on loans deposits and core deposit intangible net	(3,981)	(1,813)
Depreciation of premises and equipment	6,178	5,281
Amortization of mortgaging servicing rights	1,104	1,200
Provision for loan and lease losses	21,633	9,489
Net gain on sale of mortgage loans held for sale	(3,221)	(5,647)
Origination of mortgage loans held for sale	(119,265)	(154,607)
Proceeds from sale of mortgage loans held for sale	130,065	154,766
Net gain on sale of consumer loans held for sale	(3,869)	(1,768)
Origination of consumer loans held for sale	(454,844)	(248,430)
Proceeds from sale of consumer loans held for sale	453,169	247,928
Net gain realized on sale of other real estate owned	(577)	(392)
Writedowns of other real estate owned	155	200
Impairment of premises held for sale	1,082	133
Deferred director compensation expense - Class A Common Stock	147	149
Stock based compensation expense	928	754
Increase in cash surrender value of bank owned life insurance	(1,178)	(1,114)
Net change in other assets and liabilities:
Accrued interest receivable	(1,001)	(83)
Accrued interest payable	(12)	(219)
Other assets	(3,367)	(3,064)
Other liabilities	3,283	(724)
Net cash provided by operating activities	67,454	38,367
INVESTING ACTIVITIES:
Net change in cash for acquisition of Cornerstone Bancorp, Inc.		(9,088)
Purchases of securities available for sale	(91,451)	(400,079)
Purchases of securities held to maturity	(15,460)
Proceeds from calls, maturities and paydowns of securities available for sale	114,930	428,649
Proceeds from calls, maturities and paydowns of securities held to maturity	3,129	4,504
Net change in outstanding warehouse lines of credit	14,279	(274,457)
Purchase of non-business acquisition loans, including premiums paid	(4,811)	(48,876)
Net change in other loans	(166,845)	(62,932)
Proceeds from sale of mortgage loans transferred to held for sale		72,330
Proceeds from redemption of Federal Home Loan Bank stock		224
Purchase of Federal Home Loan Bank stock	(3,859)
Proceeds from sales of other real estate owned	2,202	2,660
Net purchases of premises and equipment	(9,236)	(5,466)
Net cash used in investing activities	(157,122)	(292,531)
FINANCING ACTIVITIES:
Net change in deposits	189,037	443,745
Net change in securities sold under agreements to repurchase and other short-term borrowings	(162)	(242,975)
Payments of Federal Home Loan Bank advances	(460,000)	(267,000)
Proceeds from Federal Home Loan Bank advances	415,000	430,000
Payoff of subordinated note, net of common security interest		(4,000)
Repurchase of Class A Common Stock	(558)	(1,134)
Net proceeds from Class A Common Stock options exercised	33	80
Cash dividends paid	(13,129)	(12,467)
Net cash provided by financing activities	130,221	346,249
NET CHANGE IN CASH AND CASH EQUIVALENTS	40,553	92,085
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	289,309	210,082
CASH AND CASH EQUIVALENTS AT END OF PERIOD	329,862	302,167
Cash paid during the period for:
Interest	14,559	13,882
Income taxes	20,570	18,956
SUPPLEMENTAL NONCASH DISCLOSURES:
Transfers from loans to real estate acquired in settlement of loans	$ 556	3,939
Transfers from loans held for investment to held for sale		71,201
Loans provided for sales of other real estate owned		$ 256