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SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) segment financial_institution | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Product Information [Line Items] |  |  |  |  |
Goodwill, impairment charges |  |  | $ 0 | $ 0 |
Intangible assets, impairment charges | $ 0 | $ 0 | 0 | 0 |
Capitalized software development costs, impairment charges |  |  | 0 | 0 |
Advertising costs | 105,000 | 172,000 | 183,000 | $ 371,000 |
Equity awards liability | 0 |  | 0 |  | $ 4,000
Deferred revenue | 1,798,000 |  | 1,798,000 |  | 2,209,000
Revenue recognized |  |  | 2,130,000 |  |
Accounts receivable, net of allowance for doubtful accounts | 3,315,000 |  | 3,315,000 |  | 4,703,000
Accounts receivable, allowance for doubtful accounts | 87,000 |  | $ 87,000 |  | 69,000
Number of financial institutions | financial_institution |  |  | 2 |  |
Number of reportable segments | segment |  |  | 1 |  |
Number of operating segments | segment |  |  | 1 |  |
Three Customers | Revenue from Contract with Customer Benchmark | Customer Concentration Risk |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Business concentration risk, percent |  |  | 45.00% | 48.00% |
Three Customers | Accounts Receivable | Customer Concentration Risk |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Business concentration risk, percent |  |  |  | 46.00% |
Customer One | Revenue from Contract with Customer Benchmark | Customer Concentration Risk |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Business concentration risk, percent |  |  | 19.00% | 22.00% |
Customer One | Accounts Receivable | Customer Concentration Risk |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Business concentration risk, percent |  |  | 37.00% | 37.00% |
Customer Two | Revenue from Contract with Customer Benchmark | Customer Concentration Risk |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Business concentration risk, percent |  |  | 14.00% | 13.00% |
Customer Two | Accounts Receivable | Customer Concentration Risk |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Business concentration risk, percent |  |  | 1.00% | 8.00% |
Customer Three | Revenue from Contract with Customer Benchmark | Customer Concentration Risk |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Business concentration risk, percent |  |  | 12.00% | 13.00% |
Customer Three | Accounts Receivable | Customer Concentration Risk |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Business concentration risk, percent |  |  | 12.00% | 1.00% |
Four Customers | Accounts Receivable | Customer Concentration Risk |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Business concentration risk, percent |  |  | 61.00% |  |
Customer Four | Accounts Receivable | Customer Concentration Risk |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Business concentration risk, percent |  |  | 11.00% |  |
Fair Value, Inputs, Level 1 |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Cash, cash equivalents and short-term investments | 7,260,000 |  | $ 7,260,000 |  | 8,980,000
Fair Value, Inputs, Level 2 |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Equity awards liability | 0 |  | $ 0 |  | $ 4,000
Retirement Savings 401k Plan |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Retirement plan, maximum employee contribution, percent |  |  | 35.00% |  |
Retirement plan, employer matching contribution, percent of match |  |  | 50.00% |  |
Retirement plan, employer matching contribution, percent of employees' gross pay |  |  | 6.00% |  |
Retirement plan, matching contributions | $ 0 | $ 27,000 | $ 0 | $ 54,000 |
Minimum |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Property and equipment, useful life | 3 years |  | 3 years |  |
Maximum |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Property and equipment, useful life | 7 years |  | 7 years |  |

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