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Accrued Expenses (Tables) | 12 Months Ended
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Dec. 31, 2022
Payables and Accruals [Abstract] |
Constituents of Accrued Expenses | Accrued expenses consisted of the following (in thousands):
| December 31,
| 2022 |  | 2021
Deferred payments related to Sualab Co., Ltd. acquisition (1) | $ | 19,282 |  |  | $ | — |
Incentive compensation | 18,554 |  |  | 37,917 |
Salaries and payroll taxes | 8,121 |  |  | 8,519 |
Foreign retirement obligations | 7,191 |  |  | 7,572 |
Vacation | 5,847 |  |  | 4,686 |
Warranty obligations | 4,375 |  |  | 5,427 |
Other | 29,865 |  |  | 28,311 |
| $ | 93,235 |  |  | $ | 92,432 |
(1) The total consideration for the Company's 2019 acquisition of Sualab Co., Ltd. included deferred payments of $24,040,000 that may become payable in October 2023, contingent upon the continued employment of key talent. The deferred payments are being recorded as compensation expense over the four-year period, and the accrued balance was reclassified from "Other Liabilities" to "Accrued expenses" on the Consolidated Balance Sheets in the fourth quarter of 2022 when the liability became current.
Changes in Warranty Obligations | The changes in the warranty obligation were as follows (in thousands):
Balance as of December 31, 2020 | $ | 5,406 |
Provisions for warranties issued during the period | 3,256 |
Fulfillment of warranty obligations | (3,235) |
Balance as of December 31, 2021 | 5,427 |
Provisions for warranties issued during the period | 1,876 |
Fulfillment of warranty obligations | (2,928) |
Balance as of December 31, 2022 | $ | 4,375 |

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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 https://asc.fasb.org/extlink&oid=126907703&loc=d3e12565-110249 + Details
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