REVENUE - Net Capitalized Contract Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Capitalized Contract Cost [Line Items]
Capitalized contract cost, net	$ 3,543	$ 2,868
Prepaid Expenses and Other Current Assets
Capitalized Contract Cost [Line Items]
Capitalized contract cost, net	1,907	1,581
Other Noncurrent Assets
Capitalized Contract Cost [Line Items]
Capitalized contract cost, net	$ 1,636	$ 1,287

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