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LEASES - Lease Expense Income Statement Classification (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Lessee, Lease, Description [Line Items] |  |  |
Lease expense, net | $ 4,556 | $ 1,312 | $ 3,902
Operating lease impairment charges |  |  | 2,100
Cost of revenue |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Lease expense, net | 304 | 31 | 52
Research and development expense |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Lease expense, net | 1,984 | 446 | 413
Sales and marketing expense |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Lease expense, net | 1,163 | 187 | 173
General and administrative expense |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Lease expense, net | $ 1,105 | $ 648 | $ 3,264

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- Definition Amount of lease cost recognized by lessee for lease contract. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 25 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123399704&loc=SL77918431-209957 + Details
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