Credit Facilities (Details) (USD $)	3 Months Ended	5 Months Ended	12 Months Ended
	Mar. 31, 2012	May 19, 2012	Dec. 31, 2012	Feb. 20, 2012 Revolving Credit Facility Wells Fargo Bank
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity				$ 20,000,000.0
Debt instrument, basis spread on variable rate			1.00%
Line of credit facility, unused capacity, commitment fee percentage		0.20%
Debt covenant, minimum current ratio			1.5
Debt covenant, maximum quarterly operating loss, quarter one	6,500,000
Debt covenant, maximum quarterly operating loss, quarter two			11,000,000
Debt covenant, maximum quarterly operating loss, quarter three			13,000,000
Debt covenant, maximum quarterly operating loss, quarter four			13,000,000
Debt covenant, maximum capital expenditures			$ 3,000,000