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Consolidated Statements of Cash Flows (USD $)
In Thousands
 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Cash flows from operating activities:    
Net income $ 11,019 $ 3,470
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization of fixed and intangible assets 6,733 5,444
Amortization of other long term assets 1,934 1,566
Amortization of discounted liabilities 988  
Stock-based compensation 1,031 504
Changes in assets and liabilities associated with operations:    
Increase in net receivables (41,019) (2,540)
Increase in inventories (6,566) (2,027)
Increase in prepaid expenses and other assets (1,791) (785)
Decrease in income tax receivable/payable, net 8,133  
Increase in accounts payable 9,089 4,581
Decrease in deferred revenue (5,474)  
Increase (decrease) in other liabilities 18,220 (1,786)
Net cash provided by operating activities 2,297 8,427
Cash flows from investing activities:    
Capital expenditures (2,322) (4,613)
Net cash used in investing activities (2,322) (4,613)
Cash flows from financing activities:    
Net (repayments) borrowings under line of credit agreement (7,300) 600
Principal payments on long-term debt (4,004) (4,053)
Borrowings on long-term debt 20,063  
Proceeds from the issuance of common stock (sale of stock under ESPP and exercise of stock option) 550 277
Payment of cash dividends (826) (271)
Net cash provided by (used in) financing activities 8,483 (3,447)
Net increase in cash 8,458 367
Cash and cash equivalents at beginning of year 1,158 383
Effect of exchange rate changes on cash 342 179
Cash and cash equivalents as of June 30 $ 9,958 $ 929