Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Consolidated Statements of Cash Flows (unaudited) [Abstract]
Net income	$ 5,974	$ 4,100
Adjustments to Reconcile Net Income to Net Cash From Operating Activities
Proceeds from sales of loans held for sale	81,681	57,181
Disbursements for loans held for sale	(80,777)	(55,689)
Net increase in other liabilities held for sale	717	0
Provision for loan losses	(359)	(530)
Deferred income tax expense	3,836	2,468
Deferred loan fees	(931)	(216)
Net depreciation, amortization of intangible assets and premiums and accretion of discounts on securities, loans and interest bearing deposits - time	1,279	1,306
Net gains on mortgage loans	(2,571)	(1,642)
Net gains on securities	(27)	(162)
Share based compensation	432	410
Increase in accrued income and other assets	(2,848)	(1,130)
Decrease in accrued expenses and other liabilities	(3,218)	(613)
Total Adjustments	(2,786)	1,383
Net Cash From Operating Activities	3,188	5,483
Cash Flow From (Used in) Investing Activities
Proceeds from the sale of securities available for sale	6,152	42,391
Proceeds from the maturity of securities available for sale	4,770	13,385
Principal payments received on securities available for sale	45,305	37,246
Purchases of securities available for sale	(45,673)	(74,259)
Proceeds from the maturity of interest bearing deposits - time	251	1,678
Purchase of Federal Reserve Bank stock	0	(129)
Net increase in portfolio loans (loans originated, net of principal payments)	(61,003)	(23,280)
Net increase in payment plan receivables and other assets held for sale	(1,438)	0
Proceeds from bank-owned life insurance	523	0
Proceeds from the collection of vehicle service contract counterparty receivables	191	4,217
Proceeds from the sale of other real estate and repossessed assets	238	1,357
Capital expenditures	(680)	(611)
Net Cash From (Used in) Investing Activities	(51,364)	1,995
Cash Flow From Financing Activities
Net increase in total deposits	37,340	68,743
Net decrease in other borrowings	0	(1)
Dividends paid	(2,133)	(1,750)
Proceeds from issuance of common stock	25	32
Repurchase of common stock	0	(15,510)
Share based compensation withholding obligation	(427)	(66)
Net Cash From Financing Activities	34,805	51,448
Net Increase (Decrease) in Cash and Cash Equivalents	(13,371)	58,926
Cash and Cash Equivalents at Beginning of Period	83,194	85,783
Cash and Cash Equivalents at End of Period	69,823	144,709
Cash paid during the period for
Interest	1,622	1,495
Income taxes	140	120
Transfers to other real estate and repossessed assets	502	873
Transfer of payment plan receivables to vehicle service contract counterparty receivables	0	191
Purchase of securities available for sale not yet settled	$ 6,046	$ 21,329