Income Taxes (Detail 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets:
Deferred compensation	$ 1,301	$ 1,372
Foreign tax credits	4,346	4,346
Vacation and bonus accrual	4,213	2,448
Inventory valuation	5,837	5,615
Rental accrual	1,111	1,191
Hurricane relief credit	1,255	1,255
Stock-based compensation	1,102	663
Other	1,688	1,243
Net operating losses	77,902	74,784
Total deferred tax assets	98,755	92,917
Valuation allowance - state NOL carryforwards	(541)	(541)
Valuation allowance - tax credit carryforwards	(2,825)	(1,175)
Valuation allowance - other	(330)
Total deferred tax assets, net	95,059	91,201
Deferred tax liabilities:
Tax depreciation in excess of book depreciation	(188,510)	(169,005)
Total deferred tax liabilities	(188,510)	(169,005)
Net deferred tax liabilities	(93,451)	(77,804)
Current deferred tax assets	11,967	8,133
Deferred tax liability - long-term	(105,418)	(85,937)
Net deferred tax liabilities	$ (93,451)	$ (77,804)