Stock-Based Compensation (Details) (USD $)	12 Months Ended		0 Months Ended		5 Months Ended	12 Months Ended	0 Months Ended	5 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	May 16, 2005 2005 Plan	Dec. 31, 2012 2005 Plan	May 19, 2009 2009 Plan	Dec. 31, 2012 Non-Qualified Stock Options	May 16, 2005 Non-Qualified Stock Options 2005 Plan	May 19, 2009 Non-Qualified Stock Options 2009 Plan	Dec. 31, 2012 Restricted Stock Units	Dec. 31, 2011 Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized			749,776	1,249,776
Shares approved for issuance					500,000		16,667
Expected term	6 years 2 months 12 days	6 years 1 month 6 days	10 years
Maximum contractual term					P10Y
Fair value of shares issued								$ 1.00
Stock reserved for future grants	494,788	546,956
Compensation expense	408,000	738,000				350,000			37,000	108,000
Award vesting period	5 years
Options outstanding, weighted average remaining contractual term	6 years 4 months 24 days
Options exercisable, weighted average remaining contractual term	5 years 4 months 24 days
Total intrinsic value of options outstanding	30,000	21,000
Total intrinsic value of options exercisable	29,000	21,000
Total intrinsic value of options exercised		127,000
Unrecognized compensation cost related to non-vested options						$ 498,000			$ 49,000
Total compensation cost recognition period						3 years 2 months 12 days			1 year 3 months 18 days
Forfeiture rate	20.50%	20.50%							0.00%
Equity instruments other than options, granted in peiord									0	0