Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Condensed Consolidated Statements of Cash Flows (unaudited) [Abstract]
Net income	$ 11,905	$ 10,538
Adjustments to Reconcile Net Income to Net Cash From Operating Activities
Proceeds from sales of loans held for sale	189,654	129,838
Disbursements for loans held for sale	(193,486)	(129,514)
Provision for loan losses	224	(1,264)
Deferred income tax expense	7,589	5,625
Deferred loan fees	(3,002)	(987)
Net depreciation, amortization of intangible assets and premiums and accretion of discounts on securities, loans and interest bearing deposits - time	3,119	2,507
Net gains on mortgage loans	(5,915)	(4,171)
Net (gains) losses on securities	7	(347)
Share based compensation	916	825
Increase in accrued income and other assets	(1,922)	(1,164)
Decrease in accrued expenses and other liabilities	3,959	2,908
Total Adjustments	1,143	4,256
Net Cash From Operating Activities	13,048	14,794
Cash Flow Used in Investing Activities
Proceeds from the sale of securities available for sale	7,830	55,362
Proceeds from the maturity of securities available for sale	10,468	21,413
Principal payments received on securities available for sale	89,166	74,212
Purchases of securities available for sale	(69,824)	(159,698)
Proceeds from the maturity of interest bearing deposits - time	250	3,290
Purchase of Federal Reserve Bank stock	0	(129)
Redemption of Federal Reserve Bank stock	0	371
Net increase in portfolio loans (loans originated, net of principal payments)	(202,167)	(64,236)
Cash received from the sale of Mepco	33,446	0
Proceeds from bank-owned life insurance	523	742
Proceeds from the collection of vehicle service contract counterparty receivables	295	4,458
Proceeds from the sale of other real estate and repossessed assets	3,548	3,018
Capital expenditures	(1,904)	(990)
Net Cash Used in Investing Activities	(128,369)	(62,187)
Cash Flow From Financing Activities
Net increase in total deposits	20,500	42,329
Net decrease in other borrowings	(1)	(1)
Proceeds from Federal Home Loan Bank advances	242,000	0
Payments of Federal Home Loan Bank Advances	(165,908)	(156)
Dividends paid	(4,266)	(3,451)
Proceeds from issuance of common stock	57	56
Repurchase of common stock	0	(15,510)
Share based compensation withholding obligation	(487)	(627)
Net Cash From Financing Activities	91,895	22,640
Net Decrease in Cash and Cash Equivalents	(23,426)	(24,753)
Cash and Cash Equivalents at Beginning of Period	83,194	85,783
Cash and Cash Equivalents at End of Period	59,768	61,030
Cash paid during the period for
Interest	3,768	3,158
Income taxes	499	360
Transfers to other real estate and repossessed assets	1,014	1,275
Transfer of payment plan receivables to vehicle service contract counterparty receivables	0	294
Purchase of securities available for sale not yet settled	$ 4,366	$ 2,342