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REVENUES FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 178,717 | $ 175,172 | $ 168,811
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | $ 203,379 |  |
Revenue, Remaining Performance Obligation, Percentage | 58.00% |  |
Capitalized Contract Cost [Line Items] |  |  |
Amortization of deferred contract acquisition and fulfillment costs | $ 11,447 | 11,669 | 10,865
Deferred contract acquisition and fulfillment costs, current | 10,765 | 10,636 |
Deferred contract acquisition and fulfillment costs, noncurrent | 13,605 | 17,314 |
Enterprise, Education & Technology |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 128,704 | 125,154 | 120,190
Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 50,013 | 50,018 | 48,621
Revenue Benchmark | Revenue from Rights Concentration Risk | Enterprise, Education & Technology |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 128,704 | $ 125,154 | $ 120,190
Concentration Risk, Percentage | 100.00% | 100.00% | 100.00%
Revenue Benchmark | Revenue from Rights Concentration Risk | Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | $ 50,018 | $ 48,621
Concentration Risk, Percentage | 100.00% | 100.00% | 100.00%
Sales | Revenue from Rights Concentration Risk | Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 50,013 |  |
Subscription [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 167,681 | $ 162,750 | $ 152,480
Subscription [Member] | Revenue Benchmark | Revenue from Rights Concentration Risk | Enterprise, Education & Technology |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 124,215 | $ 120,600 | $ 113,551
Concentration Risk, Percentage | 96.50% | 96.40% | 94.50%
Subscription [Member] | Revenue Benchmark | Revenue from Rights Concentration Risk | Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | $ 42,150 | $ 38,929
Concentration Risk, Percentage | 86.90% | 84.30% | 80.10%
Subscription [Member] | Sales | Revenue from Rights Concentration Risk | Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 43,466 |  |
Professional Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 11,036 | $ 12,422 | $ 16,331
Professional Services | Revenue Benchmark | Revenue from Rights Concentration Risk | Enterprise, Education & Technology |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 4,489 | $ 4,554 | $ 6,639
Concentration Risk, Percentage | 3.50% | 3.60% | 5.50%
Professional Services | Revenue Benchmark | Revenue from Rights Concentration Risk | Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 6,547 | $ 7,868 | $ 9,692
Concentration Risk, Percentage | 13.10% | 15.70% | 19.90%
Costs To Obtain Contract [Member] |  |  |
Capitalized Contract Cost [Line Items] |  |  |
Beginning balance | $ 24,210 | $ 26,928 | $ 26,274
Additions to deferred contract acquisition costs during the period | 8,142 | 7,237 | 10,037
Amortization of deferred contract acquisition and fulfillment costs | (10,149) | (9,955) | (9,383)
Deferred contract acquisition and fulfillment costs, current | 9,770 | 9,063 | 8,979
Deferred contract acquisition and fulfillment costs, noncurrent | 12,433 | 15,147 | 17,949
Ending balance | 22,203 | 24,210 | 26,928
Total deferred costs to obtain a contract | 22,203 | 24,210 | 26,928
Costs To Fulfill Contract [Member] |  |  |
Capitalized Contract Cost [Line Items] |  |  |
Beginning balance | 3,740 | 5,522 | 5,426
Additions to deferred contract acquisition costs during the period | 0 | 0 | 1,578
Amortization of deferred contract acquisition and fulfillment costs | (1,573) | (1,782) | (1,482)
Deferred contract acquisition and fulfillment costs, current | 995 | 1,573 | 1,780
Deferred contract acquisition and fulfillment costs, noncurrent | 1,172 | 2,167 | 3,742
Ending balance | 2,167 | 3,740 | 5,522
Total deferred costs to obtain a contract | 2,167 | $ 3,740 | $ 5,522
Billed Revenues |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | 63,190 |  |
Unbilled Revenues |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | $ 140,189 |  |

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