Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Condensed Consolidated Statements of Cash Flows (unaudited) [Abstract]
Net Income	$ 17,978	$ 11,905
Adjustments to Reconcile Net Income to Net Cash From Operating Activities
Proceeds from sales of loans held for sale	210,641	189,654
Disbursements for loans held for sale	(214,952)	(193,486)
Provision for loan losses	965	224
Deferred income tax expense	4,518	7,589
Deferred loan fees and costs	(2,457)	(3,002)
Net depreciation, amortization of intangible assets and premiums and accretion of discounts on securities, loans and interest bearing deposits - time	3,192	3,119
Net gains on mortgage loans	(5,826)	(5,915)
Net losses on securities	164	7
Share based compensation	848	916
Increase in accrued income and other assets	(3,377)	(1,627)
Increase in accrued expenses and other liabilities	1,604	3,959
Total Adjustments	(4,680)	1,438
Net Cash From Operating Activities	13,298	13,343
Cash Flow Used in Investing Activities
Proceeds from the sale of securities available for sale	31,445	7,830
Proceeds from maturities, prepayments and calls of securities available for sale	88,131	99,634
Purchases of securities available for sale	(47,054)	(69,824)
Proceeds from the sale of interest bearing deposits - time	2,474	0
Proceeds from the maturity of interest bearing deposits - time	1,842	250
Net increase in portfolio loans (loans originated, net of principal payments)	(181,365)	(202,167)
Proceeds from the sale of portfolio loans	16,460	0
Acquisition of TCSB Bancorp Inc., less cash received	23,516	0
Cash received from the sale of Mepco Finance Corporation assets, net	0	33,446
Proceeds from bank-owned life insurance	474	523
Proceeds from the sale of other real estate and repossessed assets	889	3,548
Capital expenditures	(2,033)	(1,904)
Net Cash Used in Investing Activities	(65,221)	(128,664)
Cash Flow From Financing Activities
Net increase in total deposits	92,273	20,500
Net decrease in other borrowings	(3,093)	(1)
Proceeds from Federal Home Loan Bank advances	1,044,000	242,000
Payments of Federal Home Loan Bank Advances	(1,069,287)	(165,908)
Dividends paid	(6,823)	(4,266)
Proceeds from issuance of common stock	147	57
Share based compensation withholding obligation	(1,321)	(487)
Net Cash From Financing Activities	55,896	91,895
Net Increase (Decrease) in Cash and Cash Equivalents	3,973	(23,426)
Cash and Cash Equivalents at Beginning of Period	54,738	83,194
Cash and Cash Equivalents at End of Period	58,711	59,768
Cash paid during the period for
Interest	6,545	3,768
Income taxes	120	499
Transfers to other real estate and repossessed assets	641	1,014
Transfer of loans to held for sale	13,216	0
Purchase of securities available for sale not yet settled	$ 0	$ 4,366