Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands		Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Dec. 31, 2013		$ 19,931	$ 28,304	$ 55,944	$ (2,392)	$ 101,787
Balance (in shares) at Dec. 31, 2013			13,977,000
Net income				5,727		5,727
Other comprehensive income (loss), net of tax					2,305	2,305
Comprehensive income						8,032
Dividend on preferred stock				(200)		(200)
Repurchase of common stock			$ (4,562)			(4,562)
Repurchase of common stock (in shares)			(700,000)
Dividend on common stock				(1,604)		(1,604)
Common stock issued under employee plans			$ 66			66
Common stock issued under employee plans (in shares)			14,000
Stock options exercised			$ 23			23
Stock options exercised (in shares)			3,000
Compensation expense associated with stock options			$ 54			54
Compensation expense associated with restricted stock			6			6
Balance at Dec. 31, 2014	[1]	19,931	$ 23,891	59,867	(87)	103,602
Balance (in shares) at Dec. 31, 2014	[1]		13,294,000
Preferred stock accretion
Net income				8,586		8,586
Other comprehensive income (loss), net of tax					(167)	(167)
Comprehensive income						8,419
Dividend on preferred stock				(189)		(189)
Dividend on common stock				(1,600)		(1,600)
Common stock issued under employee plans			$ 36			36
Common stock issued under employee plans (in shares)			9,000
Stock options exercised			$ 156			$ 156
Stock options exercised (in shares)			39,000			38,500
Compensation expense associated with stock options			$ 42			$ 42
Compensation expense associated with restricted stock			89			89
Balance at Dec. 31, 2015	[2]		$ 24,214	66,562	(254)	90,522
Balance (in shares) at Dec. 31, 2015	[2]		13,342,000
Preferred stock redemption		(20,000)		(33)		(20,033)
Preferred stock accretion		(69)		(69)
Net income				5,259		5,259
Other comprehensive income (loss), net of tax					(405)	(405)
Comprehensive income						4,854
Dividend on common stock				(1,603)		(1,603)
Common stock issued under employee plans			$ 84			84
Common stock issued under employee plans (in shares)			29,000
Stock options exercised			$ 10			$ 10
Stock options exercised (in shares)			2,000			1,900
Compensation expense associated with stock options			$ 24			$ 24
Compensation expense associated with restricted stock			215			215
Balance at Dec. 31, 2016	[3]		$ 24,547	$ 70,218	$ (659)	$ 94,106
Balance (in shares) at Dec. 31, 2016	[3]		13,373,000
Preferred stock accretion

[1] Excludes 3 unvested restricted shares

[2] Excludes 43 unvested restricted shares

[3] Excludes 67 unvested restricted shares