Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Condensed Consolidated Statements of Cash Flows (unaudited) [Abstract]
Net Income	$ 20,111	$ 17,978
Adjustments to Reconcile Net Income to Net Cash From Operating Activities
Proceeds from the sale of equity securities at fair value	560	0
Proceeds from sales of loans held for sale	222,953	210,641
Disbursements for loans held for sale	(233,170)	(214,952)
Provision for loan losses	1,316	965
Deferred income tax expense	1,524	4,518
Deferred loan fees and costs	(1,947)	(2,457)
Net depreciation, amortization of intangible assets and premiums and accretion of discounts on securities, loans and interest bearing deposits - time	2,906	3,192
Net gains on mortgage loans	(7,913)	(5,826)
Net (gains) losses on securities	(304)	164
Share based compensation	888	848
Increase in accrued income and other assets	(3,112)	(3,377)
Increase in accrued expenses and other liabilities	10,125	1,604
Total Adjustments	(6,174)	(4,680)
Net Cash From Operating Activities	13,937	13,298
Cash Flow Used in Investing Activities
Proceeds from the sale of securities available for sale	42,236	31,445
Proceeds from maturities, prepayments and calls of securities available for sale	76,579	88,131
Purchases of securities available for sale	(81,639)	(47,054)
Proceeds from the sale of interest bearing deposits - time	0	2,474
Proceeds from the maturity of interest bearing deposits - time	100	1,842
Net increase in portfolio loans (loans originated, net of principal payments)	(152,256)	(181,365)
Proceeds from the sale of portfolio loans	40,630	16,460
Acquisition of TCSB Bancorp Inc., less cash received	0	23,516
Proceeds from bank-owned life insurance	0	474
Proceeds from the sale of other real estate and repossessed assets	808	889
Capital expenditures	(1,542)	(2,033)
Net Cash Used in Investing Activities	(75,084)	(65,221)
Cash Flow From Financing Activities
Net increase in total deposits	65,457	92,273
Net increase (decrease) in other borrowings	550	(3,093)
Proceeds from Federal Home Loan Bank Advances	27,000	1,044,000
Payments of Federal Home Loan Bank Advances	(12,143)	(1,069,287)
Dividends paid	(8,458)	(6,823)
Proceeds from issuance of common stock	282	147
Repurchase of common stock	(25,782)	0
Share based compensation withholding obligation	(866)	(1,321)
Net Cash From Financing Activities	46,040	55,896
Net Increase (Decrease) in Cash and Cash Equivalents	(15,107)	3,973
Cash and Cash Equivalents at Beginning of Period	70,244	54,738
Cash and Cash Equivalents at End of Period	55,137	58,711
Cash paid during the period for
Interest	13,188	6,545
Income taxes	2,457	120
Operating leases	1,127	0
Transfers to other real estate and repossessed assets	1,420	641
Purchase of securities available for sale not yet settled	645	0
Securitization of portfolio loans	29,790	0
Right of use assets obtained in exchange for lease obligations	7,703	0
Transfer of loans to held for sale	$ 0	$ 13,216

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Amount of cash inflow (outflow) for debt classified as other.

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The cash inflow from the sale assets received in full or partial satisfaction of a receivable including real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. Foreclosed assets also include loans that are treated as if the underlying collateral had been foreclosed because the institution has taken possession of the collateral, even though legal foreclosure or repossession proceedings have not taken place.

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Value transferred out of real estate owned (REO) in noncash transactions.

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Value of loans and leases held in the entity's portfolio transferred to loans and leases held-for-sale in noncash transactions.

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