Revenue Recognition - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Period for credit risk identified	30 days
Sales revenues totaling	$ 9.8
Unbilled contract assets	$ 46.2	$ 38.7
Period for warranties for rental equipment	90 days
Period for warranties for equipment manufactured	1 year
Deferred Income [Member]
Disaggregation Of Revenue [Line Items]
Customer contract liability	$ 16.8	11.3
Accounts Receivable [Member]
Disaggregation Of Revenue [Line Items]
Unbilled contract assets	$ 1.3	$ 1.4