Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Consolidated Statements of Cash Flows (unaudited) [Abstract]
Net income	$ 4,100	$ 3,781
Adjustments to Reconcile Net Income to Net Cash From (Used in) Operating Activities
Proceeds from sales of loans held for sale	57,181	70,657
Disbursements for loans held for sale	(55,689)	(75,788)
Provision for loan losses	(530)	(659)
Deferred federal income tax expense	2,468	2,442
Deferred loan fees	(216)	(193)
Depreciation, amortization of intangible assets and premiums and accretion of discounts on securities, loans and interest bearning deposits - time	1,306	1,179
Net gains on mortgage loans	(1,642)	(2,139)
Net gains on securities	(162)	(85)
Net gains on other real estate and repossessed assets	(6)	(39)
Vehicle service contract counterparty contingencies	30	29
Share based compensation	410	373
(Increase) decrease in accrued income and other assets	(1,160)	517
Decrease in accrued expenses and other liabilities	(1,057)	(2,385)
Total Adjustments	933	(6,091)
Net Cash From (Used in) Operating Activities	5,033	(2,310)
Cash Flow From (Used in) Investing Activities
Proceeds from the sale of securities available for sale	42,391	11,786
Proceeds from the maturity of securities available for sale	13,385	6,785
Principal payments received on securities available for sale	37,246	25,103
Purchases of securities available for sale	(74,259)	(77,534)
Purchases of interest bearing deposits - time	0	(246)
Proceeds from the maturity of interest bearing deposits - time	1,678	2,211
Purchase of Federal Reserve Bank stock	(129)	(132)
Net increase in portfolio loans (loans originated, net of principal payments)	(23,280)	(13,170)
Proceeds from the collection of vehicle service contract counterparty receivables	4,217	0
Proceeds from the sale of other real estate and repossessed assets	1,357	1,848
Capital expenditures	(611)	(975)
Net Cash From (Used in) Investing Activities	1,995	(44,324)
Cash Flow From Financing Activities
Net increase in total deposits	68,743	76,171
Net decrease in other borrowings	(1)	(2)
Net increase in vehicle service contract counterparty payables	450	335
Dividends paid	(1,750)	(1,382)
Proceeds from issuance of common stock	32	16
Repurchase of common stock	(15,510)	(902)
Share based compensation withholding obligation	(66)	(66)
Net Cash From Financing Activities	51,898	74,170
Net Increase in Cash and Cash Equivalents	58,926	27,536
Cash and Cash Equivalents at Beginning of Period	85,783	74,016
Cash and Cash Equivalents at End of Period	144,709	101,552
Cash paid during the period for
Interest	1,495	1,477
Income taxes	120	55
Transfers to other real estate and repossessed assets	873	1,017
Transfer of payment plan receivables to vehicle service contract counterparty receivables	191	21
Purchase of securities available for sale not yet settled	$ 21,329	$ 3,154