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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2021
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 September 30, 2021 and December 31, 2020 and the level they fall within the fair value hierarchy (in thousands):
Amounts Recorded at Fair ValueFinancial Statement ClassificationFair Value HierarchyFair Value September 30, 2021Fair Value December 31, 2020
Non-COLI assets held in Deferred Supplemental Compensation PlanOther assetsLevel 1$1,299 $1,120 
Interest rate swap agreementsAccrued expenses and other current liabilitiesLevel 2$490 $1,603 
Earn-out obligation - short-termAccrued expenses and other current liabilitiesLevel 3$1,000 $— 
Earn-out obligation - long-termOther long-term liabilitiesLevel 3$250 $— 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Changes in the earn-out obligation measured at fair value on a recurring basis using unobservable inputs (Level 3) for the nine months ended September 30, 2021 are as follows (in thousands):

Current portionLong-term portionTotal
Opening Balance$— $— $— 
Acquisition date fair value of contingent consideration1,750 250 2,000 
Earn-out payments(750)— (750)
Fair value adjustment included in costs and operating expenses— — — 
Balance as of September 30, 2021$1,000 $250 $1,250