Fair Value Measurements - Reconciliation of Assets and Liabilities Measured Using Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustments	$ 814	$ 241	$ (1,289)
Cash payments	(409)	(306)	(221)
Measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance at Beginning	5,005
Contingent consideration liability	5,005	5,005
Balance at Ending	6,340	5,005
Gadberry | Measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	1,590
Balance at Ending	1,590
Level 3 | Measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance at Beginning	5,005	5,070
Fair value adjustments	814	241
Contingent consideration liability	6,340	5,070	5,070
Cash payments	(409)	(306)
Balance at Ending	6,340	$ 5,005	$ 5,070
Level 3 | Gadberry | Measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustments	930
Contingent consideration liability	1,590
Balance at Ending	$ 1,590