Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities:
Net (loss) income	$ (4,062)	$ 14,617	$ 18,122
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	16,280	14,368	8,851
Gain on sale of property, plant and equipment		(12)	(20)
Deferred income tax	(2,998)	12,635	10,072
Share-based compensation expense	1,827	1,649	1,580
Changes in assets and liabilities:
Accounts receivable, net	3,334	10,267	(5,281)
Inventory, net	11,934	(12,402)	(16,958)
Accounts payable	3,391	(20,130)	(5)
Accrued employment costs	(1,241)	(2,876)	2,057
Income taxes	494	3,208	(4,672)
Other, net	(340)	(180)	(2,887)
Net cash provided by operating activities	28,619	21,144	10,859
Investing Activities:
Capital expenditures, net of amount included in accounts payable	(11,502)	(34,229)	(16,790)
Business acquisition, net of convertible notes assumed			(91,298)
Proceeds from sale of property, plant and equipment		14	20
Net cash used in investing activities	(11,502)	(34,215)	(108,068)
Financing Activities:
Borrowings under revolving credit facility	76,784	119,092	65,925
Payments on revolving credit facility	(92,230)	(87,000)	(31,275)
Payments on term loan facility	(1,500)	(20,000)
Borrowings under term loan facility			40,000
Debt repayments			(10,823)
Proceeds from the issuance of common stock	1,117	1,608	627
Payment of deferred financing costs	(1,165)	(348)	(1,371)
Purchase of treasury stock	(137)	(234)
Net cash (used in) provided by financing activities	(17,131)	13,118	63,083
Net (decrease) increase in cash	(14)	47	(34,126)
Cash at beginning of period	321	274	34,400
Cash at end of period	307	321	274
Supplemental Non-Cash Investing and Financing Activities:
Capital expenditures included in accounts payable	287	828	7,690
Convertible notes issued as acquisition consideration			20,000
Supplemental Disclosure of Cash Flow Information:
Interest paid, net of amount capitalized	2,534	2,340	1,334
Income taxes paid (refunded), net		$ (9,805)	$ 4,782