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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) segment | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Number of reportable segments | segment | 2 |  |
Contract with customer, liability, revenue recognized | $ 850 |  |
Remaining performance obligation | 854 |  |
Change in fair value of investment | $ 0 | $ 2,752 |
Vesting period | 1 year |  |
Effective income tax rate reconciliation, percent | 17.00% | 0.00% |
Unrecognized tax benefits | $ 887 |  | $ 887
Unrecognized tax benefits that would impact effective tax rate | 887 |  |
Veritone Warrants |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Change in fair value of investment |  | $ 2,800 |
Gain on sale of investment, warrants |  | $ 3,600 |
Other Noncurrent Liabilities |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Unrecognized tax benefits | 110 |  | 110
Printronix |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Allowance for doubtful accounts and sales returns | $ 30 |  | $ 78
Finite-lived intangible asset, useful life | 7 years |  |
Revenue Benchmark | Geographic Concentration Risk | Other foreign countries |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Concentration risk, percentage | 20.00% | 10.00% |
Revenue Benchmark | Licensee One | Customer Concentration Risk |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Concentration risk, percentage |  | 61.00% |
Accounts Receivable | Licensee One | Customer Concentration Risk |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Concentration risk, percentage | 44.00% |  | 59.00%
Accounts Receivable | Licensee Two | Customer Concentration Risk |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Concentration risk, percentage | 44.00% |  | 41.00%
Accounts Receivable | Licensee Three | Customer Concentration Risk |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Concentration risk, percentage | 12.00% |  |
Accounts Receivable | Customer One | Customer Concentration Risk |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Concentration risk, percentage | 13.00% |  | 11.00%
Cost of Goods and Service Benchmark | Supplier Concentration Risk | One Vendor |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Concentration risk, percentage | 11.00% |  | 14.00%
Minimum |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Warranty term | 3 months |  |
Vesting period | 1 year |  |
Minimum | Patents |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible asset, useful life | 5 years |  |
Minimum | Revenue Benchmark | Six Licensees | Customer Concentration Risk |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Concentration risk, percentage | 11.00% |  |
Maximum |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Warranty term | 2 years |  |
Vesting period | 4 years |  |
Maximum | Patents |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible asset, useful life | 10 years |  |
Maximum | Revenue Benchmark | Six Licensees | Customer Concentration Risk |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Concentration risk, percentage | 18.00% |  |
Maximum | Revenue Benchmark | Licensee Two | Customer Concentration Risk |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Concentration risk, percentage |  | 9.00% |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01 |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Remaining performance obligation period | 2 years |  |

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