Stock-Based Compensation (Details Textual) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	$ 39
Share-based Compensation Arrangement by Share-based Payment Award, Estimated Fair Value of Stock Price (in dollars per share)	$ 7.36
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	8 years 8 months 12 days
Equity Plan 2006 [Member]
Share-based Compensation Shares Authorized Under Stock Option Plans Expire Period	10 years