Summary of Significant Accounting Policies - Changes in Capitalized Contract Cost (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Change In Capitalized Contract Cost [Heading Roll Forward]
Beginning balance	$ 5,992	$ 4,439
Costs to obtain and fulfill contracts capitalized	7,256	6,974
Less costs to obtain and fulfill contracts recognized as expense	(5,936)	(5,421)
Ending balance	$ 7,312	$ 5,992

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123353750&loc=SL49131252-203054

Name:	us-gaap_CapitalizedContractCostNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant