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Fair Value of Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2021
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following tables provide the financial assets and financial liabilities carried at fair value measured on a recurring basis:
June 30, 2021 | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Money market funds (1) | $ | 22 |  |  | $ | — |  |  | $ | — |  |  | $ | 22 |
Interest rate swap (2) | — |  |  | 8,082 |  |  | — |  |  | 8,082 |
Total assets | $ | 22 |  |  | $ | 8,082 |  |  | $ | — |  |  | $ | 8,104 |
Liabilities: |  |  |  |  |  |  |
Acquisition contingent consideration (3) | $ | — |  |  | $ | — |  |  | $ | 8,728 |  |  | $ | 8,728 |
Deferred compensation plan (4) | 2,777 |  |  | — |  |  | — |  |  | 2,777 |
Cash-settled equity awards (5) | 699 |  |  | — |  |  | — |  |  | 699 |
Total liabilities | $ | 3,476 |  |  | $ | — |  |  | $ | 8,728 |  |  | $ | 12,204 |
December 31, 2020 | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Money market funds (1) | $ | 34,696 |  |  | $ | — |  |  | $ | — |  |  | $ | 34,696 |
Interest rate swap (2) | — |  |  | 347 |  |  | — |  |  | 347 |
Total assets | $ | 34,696 |  |  | $ | 347 |  |  | $ | — |  |  | $ | 35,043 |
Liabilities: |  |  |  |  |  |  |
Acquisition contingent consideration (3) | $ | — |  |  | $ | — |  |  | $ | 4,299 |  |  | $ | 4,299 |
Deferred compensation plan (4) | 2,591 |  |  | — |  |  | — |  |  | 2,591 |
Cash-settled equity awards (5) | 195 |  |  | — |  |  | — |  |  | 195 |
Total liabilities | $ | 2,786 |  |  | $ | — |  |  | $ | 4,299 |  |  | $ | 7,085 |
(1)Included in Cash and cash equivalents in the consolidated balance sheets. (2)Included in Other assets in the consolidated balance sheets. (3)Included in Other liabilities, except for current liabilities of $6,561 and $2,884 as of June 30, 2021 and December 31, 2020, respectively, which are included in Accruals and other current liabilities in the consolidated balance sheets. Acquisition contingent consideration liability is measured at fair value and is based on significant inputs not observable in the market, which represents a Level 3 measurement within the fair value hierarchy. The valuation of contingent consideration uses assumptions the Company believes would be made by a market participant. (4)Included in Other liabilities, except for current liabilities of $201 and $169 as of June 30, 2021 and December 31, 2020, respectively, which are included in Accruals and other current liabilities in the consolidated balance sheets. (5)Included in Accruals and other current liabilities in the consolidated balance sheets.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation | The following table is a reconciliation of the changes in fair value of the Company’s financial liabilities which have been classified as Level 3 in the fair value hierarchy.
| Six Months Ended |  | Year Ended
| June 30, 2021 |  | December 31, 2020
Balance, beginning of year | $ | 4,299 |  |  | $ | 6,599 |
Payments | (544) |  |  | (3,425) |
Addition | 4,991 |  |  | 2,380 |
Change in fair value | — |  |  | (1,340) |
Foreign currency translation adjustments | (18) |  |  | 85 |
Balance, end of period | $ | 8,728 |  |  | $ | 4,299 |
Schedule of Interest Rate Derivatives | The following is a summary of the interest rate swap activity and the location the activity is recognized in the consolidated statements of operations:
|  | Three Months Ended |  | Six Months Ended |  |
|  | June 30, |  | June 30, |  | Recognized in Consolidated
|  | 2021 |  | 2020 |  | 2021 |  | 2020 |  | Statements of Operations
Interest rate swap: |  |  |  |  |  |  |  |  |  |
(Loss) gain from change in fair value |  | $ | (5,926) |  |  | $ | (4,174) |  |  | $ | 7,735 |  |  | $ | (4,174) |  |  | Other (expense) income, net
Payments |  | 316 |  |  | 110 |  |  | 617 |  |  | 110 |  |  | Interest expense, net

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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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