Related Parties - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2013	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Related Party Transaction [Line Items]
Accrued liabilities under Management Services Agreement						$ 250
Termination fee and management advisory fees	4,500
Reimbursement cost under Management Services Agreement		7	21	18	62
Receivable from stockholder under KPS Reimbursement Obligation						4,875
Selling, General and Administrative Expenses [Member]
Related Party Transaction [Line Items]
Selling, general and administrative expenses under Management Services Agreement		$ 4,500	$ 250	$ 4,750	$ 500
Halkos [Member]
Related Party Transaction [Line Items]
Outstanding shares of holdings		61.50%		61.50%