Stock-Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
2005 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares grants (in shares)	833,333
Shares available for grant (in shares)	431,610
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock options	5 years
Period to exercise option	10 years
Shares [Roll Forward]
Outstanding, January 1, 2012 (in shares)	155,224
Granted (in shares)	0
Exercised (in shares)	(40,086)
Forfeited, expired or cancelled (in shares)	(7,293)
Outstanding, December 31, 2012 (in shares)	107,845	155,224
Exercisable at December 31, 2012 (in shares)	107,845
Weighted average exercise price per share [Roll Forward]
Outstanding, January 1, 2012 (in dollars per share)	$ 10.71
Granted (in dollars per share)	$ 0
Exercised (in dollars per share)	$ 7.50
Forfeited, expired or cancelled (in dollars per share)	$ 15.58
Outstanding, December 31, 2012 (in dollars per share)	$ 11.58	$ 10.71
Exercisable at December 31, 2011 (in dollars per share)	$ 11.58
Weighted average remaining contractual terms (in years) [Abstract]
Outstanding, December 31, 2012	4 years 11 months 1 day
Exercisable at December 31, 2012	4 years 11 months 1 day
Total intrinsic value [Abstract]
Exercised	$ 238	$ 191	$ 75
Outstanding, December 31, 2012	300
Exercisable at December 31, 2012	300
Total intrinsic value of options exercised	238	191	75
Compensation expense	8	86	169
Unrecognized compensation cost related to non-vested options	0
Stock Options [Member] | 2005 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair market value in single calendar year	100
Vesting period of stock options	5 years
Period to exercise option	10 years
Restricted Stock Awards [Member]
Total intrinsic value [Abstract]
Compensation expense	0	8	26
Total intrinsic value of restricted stock vested		16	46
Restricted Stock Units (RSUs) [Member]
Total intrinsic value [Abstract]
Compensation expense	803	529	143
Shares [Roll Forward]
Outstanding, January 1, 2012 (in shares)	71,744
Granted (in shares)	79,456
Vested (in shares)	(46,841)
Forfeited, expired or cancelled (in shares)	(4,548)
Outstanding, December 31, 2012 (in shares)	99,811	71,744
Weighted average fair value per share [Roll Forward]
Outstanding, January 1, 2012 (in dollars per share)	$ 12.80
Granted (in dollars per share)	$ 13.31
Vested (in dollars per share)	$ 12.86
Forfeited, expired or cancelled (in dollars per share)	$ 13.18
Outstanding, December 31, 2012 (in dollars per share)	$ 13.16	$ 12.80
Weighted average remaining contractual terms (in years) [Abstract]
Outstanding, December 31, 2012	2 years 6 months 18 days
Total unrecognized compensation costs related to non-vested restricted stock units	$ 931
Weighted-average period expected to be recognized	1 year 10 months 24 days