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Consolidated Statement of Cash Flows (Unaudited) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Cash flows from (used for) operating activities:    
Net income $ 6,230 $ 10,323
Adjustments to reconcile net income to net cash used for operating activities -    
Depreciation and amortization 5,280 3,544
Loss on disposition of property and equipment   9
Stock-based compensation 1,237 177
Other long-term assets (3,231) (232)
Other long-term liabilities 1,824 2,635
Total adjustments to reconcile net income to net cash from operating activities 11,340 16,456
Changes in working capital:    
Accounts receivable (44,682) (54,045)
Inventories (39,961) 1,696
Income taxes receivable and deferred (363) 5,077
Prepaid expenses and other 3,240 682
Accounts payable 31,305 17,277
Change in outstanding checks 1,371 5
Accrued payroll and other accrued liabilities (2,067) (3,633)
Total changes in working capital (51,157) (32,941)
Net cash used for operating activities (39,817) (16,485)
Cash flows from (used for) investing activities:    
Capital expenditures (7,969) (7,903)
Proceeds from disposition of property and equipment 2 2
Net cash used for investing activities (7,967) (7,901)
Cash flows from (used for) financing activities:    
Credit facility revolver borrowings 154,060 124,640
Credit facility revolver repayments (106,000) (98,935)
Principal payments under capital lease obligations (51)  
Term loan repayments (2,188)  
Credit facility fees and expenses (1,085)  
Proceeds from exercise of stock options (including tax benefits) and employee stock purchases 119 11
Dividends paid (218) (218)
Net cash from financing activities 44,637 25,498
Cash and cash equivalents:    
Net change (3,147) 1,112
Beginning balance 7,403 1,492
Ending balance 4,256 2,604
Cash paid during the period    
Interest paid 1,884 889
Income taxes paid (refunded) $ (142) $ 22