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Accrued Expenses (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Payables and Accruals [Abstract] |  |
Payroll taxes | $ 1,816 | $ 1,893
Payroll | 3,474 | 3,141
Bonuses | 5,273 | 5,778
Commissions | 984 | 894
Vacation | 6,280 | 5,066
Royalties | 1,221 | 1,368
Value-added tax | 1,469 | 1,158
Other accrued expenses | 7,185 | 7,971
Total | $ 27,702 | $ 27,269

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