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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 $ 8,734 $ 5,012
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation and amortization of fixed and intangible assets 3,469 3,251
Amortization of other long term assets 682 1,253
Amortization of discounted liabilities 198 388
Stock-based compensation 422 523
Tax benefit from exercise of stock options (43)  
Changes in assets and liabilities associated with operations:    
Increase in net receivables (30,300) (29,900)
Increase in inventories (3,599) (3,243)
Increase in prepaid expenses and other assets (1,568) (1,988)
Decrease in income tax receivable/payable, net 3,725 8,133
Increase in accounts payable 1,188 7,703
Decrease in deferred revenue (7,571) (5,533)
Increase in other liabilities 17,065 3,896
Net cash used in operating activities (7,598) (10,505)
Cash flows from investing activities:    
Capital expenditures (5,718) (910)
Net cash used in investing activities (5,718) (910)
Cash flows from financing activities:    
Net (repayments) borrowings under line of credit agreement   (7,300)
Principal payments on long-term debt (2,000) (2,004)
Tax benefit from exercise of stock options 43  
Borrowings on long-term debt   20,063
Decrease in other notes payable (6,035)  
Proceeds from the issuance of common stock (sale of stock under ESPP and exercise of stock option) 417 550
Net cash (used in) provided by financing activities (7,575) 11,309
Net (decrease) in cash (20,891) (106)
Cash and cash equivalents at beginning of period 35,085 1,158
Effect of exchange rate changes on cash 538 222
Cash and cash equivalents as of March 31 $ 14,732 $ 1,274