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Accrued Expenses (Tables) | 12 Months Ended
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Dec. 31, 2011
Accrued Expenses [Abstract] |
Constituents of accrued expenses |
|  | December 31, |
|  | 2011 |  |  | 2010 |
Company bonuses |  | $ | 8,721 |  |  | $ | 7,354 |
Salaries, commissions, and payroll taxes |  |  | 5,769 |  |  |  | 5,765 |
Vacation |  |  | 4,109 |  |  |  | 3,699 |
Japanese retirement allowance |  |  | 3,559 |  |  |  | 3,204 |
Japanese consumption taxes |  |  | 2,984 |  |  |  | 1,858 |
Warranty obligations |  |  | 2,097 |  |  |  | 1,985 |
Other |  |  | 5,051 |  |  |  | 5,481 |
|  | $ | 32,290 |  |  | $ | 29,346 |
Changes in warranty obligations |
Balance as of December 31, 2009 |  | $ | 1,377 |
Provisions for warranties issued during the period |  |  | 2,141 |
Fulfillment of warranty obligations |  |  | (1,506 | )
Foreign exchange rate changes |  |  | (27 | )
Balance as of December 31, 2010 |  |  | 1,985 |
Provisions for warranties issued during the period |  |  | 1,835 |
Fulfillment of warranty obligations |  |  | (1,664 | )
Foreign exchange rate changes |  |  | (59 | )
Balance as of December 31, 2011 |  | $ | 2,097 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 460 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 8 -Section 50 -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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