Basis of Presentation and Principles of Consolidation - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended			6 Months Ended
	Jun. 30, 2013 Segment	Jun. 30, 2013 Halkos [Member]	Jun. 30, 2012 Raw material in-transit [Member] Restatement Adjustment [Member] cost of sales, overstated/understated amount [Member]	Jun. 30, 2012 Raw material in-transit [Member] Restatement Adjustment [Member] cost of sales, overstated/understated amount [Member]	Jun. 30, 2012 Raw material in-transit [Member] Restatement Adjustment [Member] Inventory, overstated amount [Member]	Jun. 30, 2012 Duplicate Accruals for receipt of raw material [Member] Restatement Adjustment [Member] cost of sales, overstated/understated amount [Member]	Jun. 30, 2012 Duplicate Accruals for receipt of raw material [Member] Restatement Adjustment [Member] cost of sales, overstated/understated amount [Member]	Jun. 30, 2012 Duplicate Accruals for receipt of raw material [Member] Restatement Adjustment [Member] Accounts Payable [Member] cost of sales, overstated/understated amount [Member]	Jun. 30, 2012 Workers Compensation Insurance [Member] Restatement Adjustment [Member]	Dec. 31, 2012 Insurance Receivables [Member] Restatement Adjustment [Member] Insurance Receivable [Member]	Dec. 31, 2012 Insurance Receivables [Member] Restatement Adjustment [Member] Accrued Liabilities [Member]	Jun. 30, 2013 IPO [Member]	Jun. 30, 2013 Minimum [Member]	Jun. 30, 2013 Maximum [Member]
Consolidation And Basis Of Presentation [Line Items]
Common stock, shares issued												8,050,000
Percentage of common stock share outstanding		61.50%
Number of reportable segments	3
Percentage of ownership, equity method investment													20.00%	50.00%
Overstated/ understated amount			$ 50	$ 388	$ 811	$ 1,007	$ 1,007	$ 1,396	$ 298	$ 984	$ 984