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Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Current assets:    
Cash and cash equivalents $ 33 $ 46
Trade and other receivables, less allowance for doubtful accounts of $719 and $1,748 64,609 41,498
Costs and estimated earnings in excess of billings on uncompleted contracts 51,066 73,314
Inventories 109,945 113,545
Refundable income taxes 1,339  
Deferred income taxes 5,277 5,177
Prepaid expenses and other 1,708 2,558
Total current assets 233,977 236,138
Property and equipment, net 162,616 152,545
Goodwill 20,478 20,478
Other assets 16,642 13,261
Total assets 433,713 422,422
Current liabilities:    
Current portion of long-term debt 5,714 5,714
Current portion of capital lease obligations 4,420 3,295
Accounts payable 22,063 21,042
Accrued liabilities 11,878 23,424
Deferred revenue 7,866 8,793
Billings in excess of costs and estimated earnings on uncompleted contracts 4,005 6,478
Total current liabilities 55,946 68,746
Note payable to financial institution 59,951 47,533
Long-term debt, less current portion 2,071 6,357
Capital lease obligations, less current portion 6,248 9,179
Deferred income taxes 18,957 15,254
Pension and other long-term liabilities 13,301 15,921
Total liabilities 156,474 162,990
Commitments and contingencies (Note 6)      
Stockholders' equity:    
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued or outstanding      
Common stock, $.01 par value, 15,000,000 shares authorized, 9,449,299 and 9,382,994 shares issued and outstanding 94 94
Additional paid-in-capital 113,667 112,230
Retained earnings 165,464 149,381
Accumulated other comprehensive loss (1,986) (2,273)
Total stockholders' equity 277,239 259,432
Total liabilities and stockholders' equity $ 433,713 $ 422,422