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Consolidated Statements of Cash Flows (Unaudited) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Cash flows from (used for) operating activities:    
Net income $ 2,777 $ 5,163
Adjustments to reconcile net income to net cash from (used for) operating activities -    
Depreciation and amortization 6,011 5,850
(Gain) Loss on disposition of property and equipment 12 83
Stock-based compensation 914 797
Insurance recovery receivable   (872)
Other long-term assets (851) (1,467)
Other long-term liabilities (199) (1,573)
8,664 7,981
Changes in working capital:    
Accounts receivable (34,618) (35,899)
Inventories 2,508 14,839
Prepaid expenses and other 1,347 4,774
Accounts payable 2,889 7,890
Change in outstanding checks (9,629) 1,543
Accrued payroll and other accrued liabilities 850 539
(36,653) (6,314)
Net cash from (used for) operating activities (27,989) 1,667
Cash flows from (used for) investing activities:    
Capital expenditures (2,341) (1,714)
Proceeds from disposition of property and equipment 7  
Net cash used for investing activities (2,334) (1,714)
Cash flows from (used for) financing activities:    
Credit facility revolver borrowings 115,525 101,864
Credit facility revolver repayments (80,720) (104,484)
Principal payments under capital lease obligations   (27)
Term loan repayments (2,187) (2,187)
Proceeds from exercise of stock options (including tax benefits) and employee stock purchases 137 117
Dividends paid (219) (219)
Net cash from (used for) financing activities 32,536 (4,936)
Cash and cash equivalents:    
Net change 2,213 (4,983)
Beginning balance 3,186 7,782
Ending balance $ 5,399 $ 2,799