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Revenue Recognition - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
segment
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Revenue from Contract with Customer [Abstract]      
Number of operating segments | segment 2    
Revenue payment terms Collection of consideration the Company expects to receive typically occurs within 30 to 60 days of billing for commercial insurance, Medicare and other governmental and self-pay payers and within 60 to 90 days of billing for client payers.    
Pharma contract liability, revenue recognized $ 4.4 $ 2.3 $ 2.2
Amortization of contract commissions 1.1 $ 0.8 $ 1.2
Amount of new contracts signed 172.0    
Revenue, remaining performance obligation, amount $ 267.0