Business Description, Basis of Presentation and Significant Accounting Policies - Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Numerator:
Net income	$ 929	$ 3,375	$ 1,957	$ 5,508
Denominator:
Basic weighted average shares (in shares)	9,113,713	9,089,919	9,106,455	9,005,221
Dilutive common stock equivalents using treasury stock method	79,861	268,373	112,706	271,398
Diluted weighted average shares (in shares)	9,193,574	9,358,292	9,219,161	9,276,619
Basic earnings per common share: (in dollars per share)	$ 0.10	$ 0.37	$ 0.21	$ 0.61
Diluted earnings per common share: (in dollars per share)	$ 0.10	$ 0.36	$ 0.21	$ 0.59
Weighted average options outstanding	1,215,747	1,067,717	1,195,599	1,135,514
Anti-dilutive options not included in the computations	799,203	374,611	799,203	374,611