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Accrued Expenses (Tables) | 12 Months Ended
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Dec. 31, 2018
Payables and Accruals [Abstract] |
Constituents of Accrued Expenses | Accrued expenses consisted of the following (in thousands):
| December 31,
| 2018 |  | 2017
Salaries, commissions, and payroll taxes | $ | 11,039 |  |  | $ | 9,944 |
Company bonuses | 9,134 |  |  | 13,721 |
Vacation | 6,507 |  |  | 5,479 |
Foreign retirement obligations | 4,816 |  |  | 4,260 |
Warranty obligations | 4,743 |  |  | 4,701 |
Acquisition deferred and contingent liabilities | 431 |  |  | 6,022 |
Other | 23,550 |  |  | 24,122 |
| $ | 60,220 |  |  | $ | 68,249 |
Changes in Warranty Obligations | The changes in the warranty obligation were as follows (in thousands):
Balance as of December 31, 2016 | $ | 4,335 |
Provisions for warranties issued during the period | 2,843 |
Fulfillment of warranty obligations | (3,109 | )
Foreign exchange rate changes | 632 |
Balance as of December 31, 2017 | 4,701 |
Provisions for warranties issued during the period | 4,184 |
Fulfillment of warranty obligations | (4,024 | )
Foreign exchange rate changes | (118 | )
Balance as of December 31, 2018 | $ | 4,743 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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