Stock Warrants (Details) (USD $)	0 Months Ended								12 Months Ended		0 Months Ended	12 Months Ended
	Sep. 04, 2012	Aug. 31, 2012	Feb. 25, 2011	Feb. 01, 2012	Jun. 02, 2007	Jun. 30, 2009 Stock warrants	Jun. 30, 2008 Stock warrants	Dec. 31, 2007 Stock warrants	Dec. 31, 2012 Vested immediately	Feb. 01, 2012 Vested immediately	Feb. 25, 2011 Vested upon acheivement of additional defined revenue targets	Dec. 31, 2012 Vested upon acheivement of additional defined revenue targets	Feb. 01, 2012 Vested upon acheivement of additional defined revenue targets	Feb. 01, 2012 Acheivement of additional defined revenue targets	Feb. 25, 2011 Acheivement of additional defined revenue targets
Class of Warrant or Right [Line Items]
Reverse stock split conversion ratio	0.3333	0.3333
Warrants issued			83,333	44,444	75,000					22,222			22,222	88,889	166,666
Exercise price (dollars per share)			5.01	1.50	5.52
Warrants outstanding						18,750	18,750	37,500
Warrants value (dollars per share)						$ 16.59	$ 8.61	$ 2.82
Vesting percentage									0.25			0.25
Award expiration period			5 years
Award vesting period											2 years
Incremental warrant issues														44,444	83,333
Compensation costs									$ 21,000