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Condensed Consolidated Statements Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Cash Flows From Operating Activities:    
Net income $ 4,734 $ 2,932
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 3,287 3,191
Amortization of intangible assets   30
Provision for doubtful accounts (404) (365)
Equity in earnings of unconsolidated subsidiary, net of dividends received   113
Amortization of debt issuance costs 489 510
Deferred income taxes (388) 1,331
Loss on disposal of property and equipment 132 16
Stock based compensation expense 579 218
Unrealized loss on foreign currency forward contracts 169 386
Changes in operating assets and liabilities:    
Trade and other receivables, net 5,427 (4,599)
Costs and estimated earnings in excess of billings on uncompleted contracts, net (9,565) (8,411)
Inventories 8,275 (13,157)
Refundable income taxes   3,917
Prepaid expenses and other assets 601 193
Accounts payable 1,833 10,553
Accrued and other liabilities 2,520 787
Net cash provided by (used in) operating activities 17,689 (2,355)
Cash Flows From Investing Activities:    
Additions to property and equipment (4,437) (3,555)
Proceeds from the sale of property and equipment 4 71
Issuance of notes receivable (1,000)  
Net cash used in investing activities (5,433) (3,484)
Cash Flows From Financing Activities:    
Proceeds from issuance of common stock   36
Tax withholdings related to net share settlements of restricted stock awards and performance shares (145) (50)
Payments on long-term debt (2,786) (2,786)
Borrowings under note payable to financial institution 25,150 49,267
Payments on note payable to financial institution (33,343) (39,813)
Payments on capital lease obligations (857) (789)
Payments of debt amendment costs (369)  
Net cash (used in) provided by financing activities (12,350) 5,865
Change in cash and cash equivalents (94) 26
Cash and cash equivalents, beginning of period 182 51
Cash and cash equivalents, end of period 88 77
Non-cash investing activity:    
Escrow account related to capital lease financing 897 2,726
Accrued property and equipment purchases $ 1,036 $ 2,284