Quarterly Financial Data (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Data (Unaudited) [Abstract]
Revenue, Net	$ 21,635	$ 17,771	$ 18,261	$ 20,693	$ 16,911	$ 17,454	$ 15,731	$ 16,705
Gross Profit	8,809	6,956	6,592	8,089	6,385	6,715	6,335	6,836	30,446	26,272
Net income (loss)	$ 1,273	$ 386	$ 334	$ 36,150	$ 351	$ 551	$ 231	$ 253	$ 38,144	$ 1,387
Earnings Per Share, Basic	$ 0.14	$ 0.04	$ 0.04	$ 4.06	$ 0.04	$ 0.06	$ 0.03	$ 0.01	$ 4.29	$ 0.15
Earnings Per Share, Diluted	$ 0.13	$ 0.04	$ 0.04	$ 3.26	$ 0.04	$ 0.06	$ 0.02	$ 0.01	$ 3.61	$ 0.15