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SEGMENT DISCLOSURES - Segment income (loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Total Revenues | $ 666,776 | $ 572,387 | $ 491,624
Cost of revenues | 240,651 | 223,808 | 193,132
Research & development | 66,666 | 58,212 | 41,877
Selling & marketing | 170,574 | 140,237 | 125,335
General & administrative | 152,835 | 145,936 | 121,651
Depreciation & amortization | 20,953 | 15,202 | 12,440
Other segment items | (175) | 6,502 | 5,271
Interest expense (income), net | (4,137) | 4,164 | 2,048
Income tax expense (benefit) | 54,638 | (8,581) | 2,174
Net loss | (52,729) | (13,093) | (12,304)
Adjustments: |  |  |
Interest expense (income), net | (4,137) | 4,164 | 2,048
Income tax expense (benefit) | 54,638 | (8,581) | 2,174
Depreciation and amortization | 20,953 | 15,202 | 12,440
Amortization of cloud computing implementation costs - general and administrative | 4,007 | 2,570 |
Stock-based compensation expense | 47,425 | 33,919 | 19,729
Software subscriptions |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Total Revenues | 567,124 | 480,830 | 415,473
Cost of revenues | 175,580 | 162,920 | 142,071
Services |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Total Revenues | 99,652 | 91,557 | 76,151
Cost of revenues | 65,071 | 60,888 | 51,061
Single reportable segment |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Total Revenues | 666,776 | 572,387 | 491,624
Research & development | 66,666 | 58,212 | 41,877
Selling & marketing | 170,574 | 140,237 | 125,335
General & administrative | 152,835 | 145,936 | 121,651
Depreciation & amortization | 20,953 | 15,202 | 12,440
Change in fair value of acquisition contingent earn-outs | 17,500 |  |
Other segment items | (175) | 6,502 | 5,271
Interest expense (income), net | (4,137) | 4,164 | 2,048
Income tax expense (benefit) | 54,638 | (8,581) | 2,174
Net loss | (52,729) | (13,093) | (12,304)
Adjustments: |  |  |
Interest expense (income), net | (4,137) | 4,164 | 2,048
Income tax expense (benefit) | 54,638 | (8,581) | 2,174
Depreciation and amortization | 20,953 | 15,202 | 12,440
Depreciation and amortization of capitalized software and acquired intangible assets - cost of subscription revenues | 59,302 | 54,048 | 44,934
Amortization of acquired intangible assets - selling and marketing expense | 2,478 | 2,641 | 3,779
Amortization of cloud computing implementation costs - general and administrative | 4,007 | 2,570 |
Stock-based compensation expense | 47,425 | 33,919 | 19,729
Severance expense | 3,048 | 3,576 | 877
Acquisition contingent consideration | (2,575) | 1,549 | 2,300
Litigation settlements |  |  | 2,000
Change in fair value of acquisition contingent earn-outs | 17,500 |  |
Transaction costs | 2,032 | 4,853 | 696
Adjusted EBITDA (Non-GAAP) | 151,942 | 100,848 | 78,673
Single reportable segment | Software subscriptions |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Cost of revenues | 175,580 | 162,920 | 142,071
Single reportable segment | Services |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Cost of revenues | $ 65,071 | $ 60,888 | $ 51,061

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