Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash	$ 733	$ 321
Accounts receivable (less allowance for doubtful accounts of $1,824 and $1,837, respectively)	24,290	24,781
Inventory, net	95,148	95,749
Deferred income taxes	9,562	22,739
Refundable income taxes	2,264	1,594
Other current assets	3,562	2,246
Total current assets	135,559	147,430
Property, plant and equipment, net	205,856	206,150
Goodwill	20,268	20,268
Other long-term assets	2,575	2,418
Total assets	364,258	376,266
Current liabilities:
Accounts payable	14,071	10,610
Accrued employment costs	3,892	4,671
Current portion of long-term debt	3,000	1,500
Other current liabilities	1,218	735
Total current liabilities	22,181	17,516
Long-term debt	100,440	105,242
Deferred income taxes	41,224	55,227
Total liabilities	163,845	177,985
Commitments and contingencies (Note 7)
Stockholders' equity:
Common stock, par value $0.001 per share; 20,000,000 and 10,000,000 shares authorized, respectively; 7,277,982 and 7,246,933 shares issued, respectively	7	7
Additional paid-in capital	48,964	47,312
Retained earnings	153,633	153,115
Treasury stock at cost; 289,806 and 288,681 common shares held, respectively	(2,191)	(2,153)
Total stockholders' equity	200,413	198,281
Total liabilities and stockholders' equity	$ 364,258	$ 376,266