Summary of Operations and Significant Accounting Policies - Accounts Receivable and Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts:
Balance, beginning of period	$ 4,942	$ 3,579	$ 4,697
Add: bad debt expense	137	2,580	84
Less: write-offs, net of recoveries and other adjustments1	(3,169)	(1,217)	(1,202)
Balance, end of period	$ 1,910	4,942	$ 3,579
Increase in allowance for doubtful accounts		$ 300