Long-Term Debt (Details) (USD $)	1 Months Ended	3 Months Ended	6 Months Ended		1 Months Ended
	Jul. 31, 2008	Jun. 30, 2012	Jun. 30, 2012	Jun. 30, 2008	Jun. 30, 2008 First Tranche [Member]	Jul. 31, 2008 Second Tranche [Member]	Jul. 31, 2008 Third Tranche [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity				$ 15,000,000
Line of credit facility, outstanding					3,800,000	5,600,000	5,600,000
Unused capacity fee percentage	2.00%
Line of credit facility, interest rate	11.59%
Interest expense		$ 25,000	$ 81,000