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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Cash flows from operating activities:    
Net income $ 1,976 $ 25,085
Adjustments to reconcile net income to net cash (used in) provided by operating activities:    
Depreciation and amortization of fixed and intangible assets 7,996 7,461
Amortization of other long term assets 3,027 1,802
Amortization of discounted liabilities 175 86
Stock-based compensation 1,806 1,747
Tax benefit from exercise of stock options (262) (57)
Loss from equity method investment 396  
Gain on dilution of equity method investment (256)  
Changes in assets and liabilities associated with operations:    
(Increase) decrease in net receivables (1,025) 8,513
Increase in inventories (35,410) (39,199)
Increase in prepaid expenses and other assets (5,069) (9,837)
Decrease (increase) in income tax receivable 120 (1,404)
Decrease in accounts payable (16,521) (8,532)
Decrease in deferred revenue (2,276) (20,149)
Increase in other payables and accrued expenses 16,264 54,529
Net cash (used in) provided by operating activities (29,059) 20,045
Cash flows from investing activities:    
Capital expenditures (3,954) (8,360)
Investment   (3,687)
Net cash used in investing activities (3,954) (12,047)
Cash flows from financing activities:    
Net borrowings under line of credit agreement 34,450 40,750
Payments on long-term debt   (46,000)
Payments on other long-term liabilities (1,109) (1,238)
Tax benefit from exercise of stock options 262 57
Decrease in other notes payable   (6,154)
Repurchases of common stock (1,531)  
Payment of cash dividends (2,836) (1,976)
Proceeds from the issuance of common stock (sale of stock under ESPP and exercise of stock options) 1,196 527
Net cash provided by (used in) financing activities 30,432 (14,034)
Net decrease in cash and cash equivalents (2,581) (6,036)
Cash and cash equivalents at beginning of period 6,680 38,476
Effect of exchange rate changes on cash 90 (26)
Cash and cash equivalents as of the end of the period $ 4,189 $ 32,414