Financing - Additional Information (Detail) (USD $)				1 Months Ended	6 Months Ended
	Jun. 01, 2013	Jun. 30, 2013 ABL Facility [Member]	Dec. 31, 2012 ABL Facility [Member]	Jun. 01, 2012 Senior secured notes [Member]	Jun. 30, 2013 Senior secured notes [Member]	Jun. 30, 2013 Senior secured notes [Member] Minimum [Member]	Jun. 30, 2013 Senior secured notes [Member] Maximum [Member]
Debt Instrument [Line Items]
Aggregate principal amount				$ 375,000
Debt instrument stated interest rate	9.50%			9.50%
Senior Secured Notes maturity period				Jun. 01, 2019
Dividend and cash distributed to meet expenses					5,000,000
Percentage of dividend to net income					50.00%
Restricted net assets of subsidiaries					28,629
Additional interest on the Notes in default						0.25%	0.50%
Debt instrument default interest rate	0.25%
Unused portion of ABL credit facility		$ 143,500	$ 184,978
Interest rate at end of period		4.25%	4.50%