Fair Value Measurements - Additional Information (Detail) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) Company shares	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) $ / shares
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of future expected acquisition-related contingent consideration obligations		$ 0.9	$ 0.9
Estimated fair value	$ 0.8
Number of companies acquired | Company	3
Business acquisition, total consideration	$ 5.5
Business acquisition, consideration in cash	2.0
Business acquisition, deferred payments	1.5
Business acquisition, stock	1.2
Business acquisition, future earn outs	$ 1.0
Warrants, expected term			5 years
Exercise price | $ / shares			$ 11.50
Liability [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Warrants outstanding | shares	6,350,000