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SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Jan. 01, 2020
Product Information [Line Items] |  |  |  |  |  |  |
Goodwill, impairment charges | $ 0 | $ 0 | $ 0 | $ 0 |  |  |
Intangible assets, impairment charges | 0 | 0 | 0 | 0 |  |  |
Advertising costs | 155,000 | 245,000 | $ 545,000 | 486,000 |  |  |
Retirement plan, maximum employee contribution, percent |  |  | 35.00% |  |  |  |
Retirement plan, matching contributions | 30,000 | $ 29,000 | $ 90,000 | $ 73,000 |  |  |
Equity awards liability | 100,000 |  | 100,000 |  | $ 378,000 |  |
Deferred revenue, current portion | 1,730,000 |  | 1,730,000 |  | 1,266,000 | $ 403,000 |
Revenue recognized | 102,000 |  | 1,226,000 |  |  |  |
Deferred revenue, long-term portion | 2,000 |  | 2,000 |  | 8,000 | $ 9,000 |
Accounts receivable, net of allowance for doubtful accounts | 2,635,000 |  | 2,635,000 |  | 2,192,000 |  | $ 1,633,000
Accounts receivable, allowance for doubtful accounts | $ 9,000 |  | $ 9,000 |  | 3,000 |  | $ 42,000
Three Customers | Revenue from Contract with Customer Benchmark | Customer Concentration Risk |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Business concentration risk, percent | 51.00% |  | 52.00% |  |  |  |
Three Customers | Accounts Receivable | Customer Concentration Risk |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Business concentration risk, percent |  |  | 70.00% |  |  |  |
Two Customers | Revenue from Contract with Customer Benchmark | Customer Concentration Risk |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Business concentration risk, percent | 60.00% |  | 58.00% |  |  |  |
Fair Value, Inputs, Level 2 |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Equity awards liability | $ 100,000 |  | $ 100,000 |  | $ 378,000 |  |
Retirement Savings 401k Plan |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Retirement plan, employer matching contribution, percent of eligible employee's deferral election |  |  | 50.00% |  |  |  |
Retirement plan, percent of eligible employee's deferral election used for employer matching contribution |  |  | 6.00% |  |  |  |
Minimum |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Property and equipment, useful life |  |  | 3 years |  |  |  |
Maximum |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Property and equipment, useful life |  |  | 7 years |  |  |  |

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