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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2020
Fair Value Disclosures [Abstract] |
Fair Value of Assets and Liabilities | The following table summarizes the financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2020 and December 31, 2019 and the level they fall within the fair value hierarchy (in thousands):
Amounts Recorded at Fair Value |  | Financial Statement Classification |  | Fair Value Hierarchy |  | Fair Value December 31, 2020 |  | Fair Value December 31, 2019
Non-COLI assets held in Deferred Supplemental Compensation Plan |  | Other assets |  | Level 1 |  | $ | 1,120 |  |  | $ | 710 |
Interest rate swaps |  | Accrued expenses |  | Level 2 |  | $ | 1,603 |  |  | $ | 1,473 |
Earn-out obligation-current |  | Current portion of earn-out obligation |  | Level 3 |  | $ | — |  |  | $ | 31,700 |
Earn-out obligation-long-term |  | Earn-out obligation |  | Level 3 |  | $ | — |  |  | $ | 5,000 |
Fair Value Measured on a Recurring Basis | Changes in earn-out obligation measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the year ended December 31, 2020 and 2019 are as follows (in thousands):
|  | Current portion |  | Long-term portion |  | Total
Balance as of December 31, 2018 |  | $ | — |  |  | $ | — |  |  | $ | — |
Acquisition date fair value of contingent consideration |  | 34,800 |  |  | — |  |  | 34,800 |
Fair value adjustment included in costs and operating expenses |  | 1,900 |  |  | — |  |  | 1,900 |
Reclassification from long-term to current |  | (5,000) |  |  | 5,000 |  |  | — |
Balance as of December 31, 2019 |  | 31,700 |  |  | 5,000 |  |  | 36,700 |
Earn-out payments |  | (31,700) |  |  | — |  |  | (31,700) |
Reclassification from long-term to current |  | 5,000 |  |  | (5,000) |  |  | — |
Fair value adjustment included in costs and operating expenses |  | (5,000) |  |  | — |  |  | (5,000) |
Balance as of December 31, 2020 |  | $ | — |  |  | $ | — |  |  | $ | — |
Fair Value Measurements on a Non-recurring Basis | The following table presents changes in the Level 3 fair value of certain assets measured on a non-recurring basis for the year ended December 31, 2020 (in thousands):
|  | Goodwill
Assets subject to impairment charges: |  |
Balance as of December 31, 2019 |  | $ | 182,377 |
Goodwill allocated to divested business |  | (7,379) |
Carrying value prior to impairment |  | 174,998 |
Impairment charge |  | (30,945) |
Carrying value after impairment |  | 144,053 |
Carrying value of assets not subject to impairment charge |  | 94,073 |
Balance as of December 31, 2020 |  | $ | 238,126 |

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + 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 (b) -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 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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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- Definition Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class 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). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset. + 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 (b) -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 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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