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Fair Value Measurements
12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
Our financial instruments measured at fair value include contingent consideration in connection with business combinations. The following table summarizes the financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2020 and 2019, and the level they fall within the fair value hierarchy (in thousands):
Fair Value
    Fair Value December 31,
Financial Instrument Financial Statement Classification Hierarchy 20202019
Contingent consideration Accounts payable and accrued expenses Level 3 $— $— 
Contingent consideration Other noncurrent liabilities Level 3 — —