Deferred Revenue - Summary of Deferred Service Contract Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Change in Contract with Customer, Liability [Roll Forward]
Balance at beginning of year	$ 11,237	$ 14,222
Add: Payments received	17,139	14,131
Less: Revenue recognized from current period sales	(7,006)	(6,337)
Less: Revenue recognized from beginning balance	(10,545)	(10,779)
Balance at end of year	$ 10,825	$ 11,237