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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Cash flows from operating activities:    
Net income (loss) $ 3,400 $ 2,584
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization of fixed and intangible assets 12,190 11,996
Amortization of other long term assets 3,992 4,332
Amortization of discounted liabilities 118 249
Stock-based compensation 2,943 3,046
Tax benefit from exercise of stock options (8) (263)
Operating loss from equity method investment 580 633
Gain from dilution of equity method investment   (954)
Changes in assets and liabilities associated with operations:    
Increase in net receivables (6,172) (16,995)
Decrease (increase) in inventories 4,135 (31,690)
Decrease (increase) in prepaid expenses and other assets 1,143 (5,237)
Decrease in income tax receivable/payable, net 4,739 7,937
Decrease in deferred tax   (328)
Increase (decrease) in accounts payable 3,010 (22,341)
Decrease in deferred revenue (860) (2,769)
Increase in other payables and accrued expenses 22,597 15,964
Net cash provided by (used in) operating activities 51,807 (33,836)
Cash flows from investing activities:    
Capital expenditures (5,196) (5,947)
Investments (125)  
Acquisitions of product lines and other intangible assets (36,435)  
Net cash used in investing activities (41,756) (5,947)
Cash flows from financing activities:    
Net (payments) borrowings under line of credit agreement (16,120) 43,450
Increase in other notes payable 10,000  
Payments on other long-term liabilities (1,252) (1,371)
Tax benefit from exercise of stock options 8 263
Repurchases of common stock   (1,531)
Non-controlling interest contribution   300
Payment of cash dividends (1,141) (4,251)
Net proceeds from the issuance of common stock (sale of stock under ESPP and exercise of stock options) 254 1,616
Net cash (used in) provided by financing activities (8,251) 38,476
Net increase (decrease) in cash and cash equivalents 1,800 (1,307)
Cash and cash equivalents at beginning of period 4,885 6,680
Effect of exchange rate changes on cash and cash equivalents (1,256) (328)
Cash and cash equivalents at end of period $ 5,429 $ 5,045