CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
OPERATING ACTIVITIES:
Net income	$ 30,088	$ 26,075
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization on investment securities, net	208	279
Accretion on loans deposits and core deposit intangible net	(1,442)	(1,301)
Depreciation of premises and equipment	4,264	3,465
Amortization of mortgaging servicing rights	714	683
Provision for loan and lease losses	17,412	7,000
Net gain on sale of mortgage loans held for sale	(2,256)	(2,560)
Origination of mortgage loans held for sale	(75,776)	(95,787)
Proceeds from sale of mortgage loans held for sale	83,637	90,150
Net gain on sale of consumer loans held for sale	(2,334)	(839)
Origination of consumer loans held for sale	(274,963)	(129,027)
Proceeds from sale of consumer loans held for sale	275,106	122,432
Net gain realized on sale of other real estate owned	(470)	(328)
Writedowns of other real estate owned	79
Deferred director compensation expense - Class A Common Stock	96	100
Stock based compensation expense	655	497
Increase in cash surrender value of bank owned life insurance	(784)	(708)
Net change in other assets and liabilities:
Accrued interest receivable	(219)	(174)
Accrued interest payable	(106)	12
Other assets	(3,076)	211
Other liabilities	3,330	(2,731)
Net cash provided by operating activities	54,163	17,449
INVESTING ACTIVITIES:
Net change in cash for acquisition of Cornerstone Bancorp, Inc.		(9,088)
Purchases of securities available for sale	(64,390)	(390,079)
Purchases of securities held to maturity	(10,096)
Proceeds from calls, maturities and paydowns of securities available for sale	82,224	394,575
Proceeds from calls, maturities and paydowns of securities held to maturity	1,792	2,866
Net change in outstanding warehouse lines of credit	(15,191)	(199,348)
Purchase of non-business acquisition loans, including premiums paid	(2,656)	(47,986)
Net change in other loans	(98,899)	(7,726)
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	1,954	1,727
Net purchases of premises and equipment	(5,650)	(3,088)
Net cash used in investing activities	(114,771)	(257,923)
FINANCING ACTIVITIES:
Net change in deposits	(26,754)	163,899
Net change in securities sold under agreements to repurchase and other short-term borrowings	(60,139)	(269,309)
Payments of Federal Home Loan Bank advances	(450,000)	(207,000)
Proceeds from Federal Home Loan Bank advances	650,000	495,000
Repurchase of Class A Common Stock	(544)	(1,134)
Net proceeds from Class A Common Stock options exercised	33	80
Cash dividends paid	(8,602)	(8,165)
Net cash provided by financing activities	103,994	173,371
NET CHANGE IN CASH AND CASH EQUIVALENTS	43,386	(67,103)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	289,309	210,082
CASH AND CASH EQUIVALENTS AT END OF PERIOD	332,695	142,979
Cash paid during the period for:
Interest	9,235	9,115
Income taxes	13,420	12,771
SUPPLEMENTAL NONCASH DISCLOSURES:
Transfers from loans to real estate acquired in settlement of loans	$ 472	1,938
Transfers from loans held for investment to held for sale		74,430
Loans provided for sales of other real estate owned		$ 256