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STOCKHOLDERS' EQUITY (DEFICIT) AND COMPENSATION ARRANGEMENTS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended | 6 Months Ended |  |
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Jun. 11, 2026 | Mar. 11, 2025 | Mar. 30, 2023 | Jun. 30, 2026 | Mar. 31, 2026 | Jun. 30, 2025 | Jun. 30, 2023 | Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025 | May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share repurchase program, authorized amount |  |  |  |  |  |  |  |  |  |  | $ 300,000
Repurchases of stock (in shares) |  |  |  | 900,000 |  |  |  | 2,800,000 |  |  |
Purchase price |  |  |  | $ 10,143 | $ 21,290 |  |  | $ 31,400 |  |  |
Share repurchase program, remaining common stock available for purchase |  |  |  | $ 213,600 |  |  |  | $ 213,600 |  |  |
Stock option units issued (in shares) |  |  | 3,500,000 |  |  |  |  |  |  |  |
Stock option units per share value (in usd per share) |  |  | $ 0.95 |  |  |  |  |  |  |  |
Granted (in usd per share) |  |  | $ 6.00 |  |  |  |  |  |  |  |
Exercise of stock options (in shares) |  |  |  |  |  |  | 437,500 | 3,062,500 |  |  |
Options outstanding (in shares) |  |  |  | 0 |  |  | 3,062,500 | 0 |  | 3,062,500 |
Tax withholdings related to net share settlements of stock-based compensation awards |  |  |  | $ 3,377 | $ 276 | $ 5,772 |  |  |  |  |
Exercise of stock options, net of shares withheld for employee taxes and net share settlement of exercise price (in shares) | 1,715,315 |  |  |  |  |  |  |  |  |  |
Selling, general and administrative |  |  |  | $ 67,683 |  | $ 70,669 |  | $ 140,711 | $ 140,509 |  |
RSUs |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Probable performance multiplier |  |  |  | 100.00% |  |  |  | 100.00% |  |  |
Vesting of shares (in shares) |  |  |  |  |  |  |  | 267,028 |  |  |
Unrecognized compensation costs |  |  |  | $ 13,700 |  |  |  | $ 13,700 |  |  |
Weighted-average period of recognition (in years) |  |  |  |  |  |  |  | 1 year 9 months 14 days |  |  |
2025 PSUs |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Vesting of shares (in shares) |  |  |  |  |  |  |  | 23,721 |  |  |
Unrecognized compensation costs |  |  |  | $ 15,400 |  |  |  | $ 15,400 |  |  |
Weighted-average period of recognition (in years) |  |  |  |  |  |  |  | 1 year 5 months 4 days |  |  |
2025 PSUs | Stock Price, Hurdle One |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock hurdle price (in usd per share) |  |  |  | $ 19.75 |  |  |  | $ 19.75 |  |  |
Vesting of shares (in shares) |  |  |  |  |  |  |  | 165,032 |  |  |
Stock Options |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  | 2 years |  |  |  |  |  |  |  |
Expiration period (in years) |  |  | 3 years |  |  |  |  |  |  |  |
Withholdings for exercise price settlement (in shares) | 1,110,943 |  |  |  |  |  |  |  |  |  |
Withholdings for exercise price settlement | $ 18,400 |  |  |  |  |  |  |  |  |  |
Tax withholdings related to net share settlements of stock-based compensation awards (in shares) | 236,242 |  |  |  |  |  |  |  |  |  |
Tax withholdings related to net share settlements of stock-based compensation awards | $ 3,900 |  |  |  |  |  |  |  |  |  |
Selling, general and administrative | $ 1,300 |  |  |  |  |  |  |  |  |  |
Taxes payable |  |  |  | $ 5,200 |  |  |  | $ 5,200 |  |  |
2026 PSUs |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Vesting of shares (in shares) |  |  |  |  |  |  |  | 0 |  |  |
Unrecognized compensation costs |  |  |  | 11,900 |  |  |  | $ 11,900 |  |  |
Weighted-average period of recognition (in years) |  |  |  |  |  |  |  | 2 years 10 months 2 days |  |  |
2024 Executive PSUs |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Vesting of shares (in shares) |  |  |  |  |  |  |  | 837,643 |  |  |
Unrecognized compensation costs |  |  |  | $ 4,200 |  |  |  | $ 4,200 |  |  |
Weighted-average period of recognition (in years) |  |  |  |  |  |  |  | 10 months 2 days |  |  |
2024 Executive PSUs | Stock Price, Hurdle One |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock hurdle price (in usd per share) |  |  |  | $ 14.86 |  |  |  | $ 14.86 |  |  |
Major Rocket Incentive Shares |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares available for issuance (in shares) |  | 954,000 |  |  |  |  |  |  |  |  |
Unrecognized compensation costs |  | $ 9,300 |  |  |  |  |  |  |  |  |
Expiration period (in years) |  | 3 years |  |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Performance multiplier threshold (as percent) |  |  |  | 0.00% |  |  |  | 0.00% |  |  |
Minimum | RSUs |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  |  |  |  | 1 year |  |  |
Minimum | 2026 PSUs |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Vesting rights, percentage |  |  |  |  |  |  |  | 0.00% |  |  |
Minimum | Major Rocket Incentive Shares |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-based payment award, financial performance benchmarks |  | $ 10,000 |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Performance multiplier threshold (as percent) |  |  |  | 300.00% |  |  |  | 300.00% |  |  |
Maximum | RSUs |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  |  |  |  | 3 years |  |  |
Maximum | 2026 PSUs |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Vesting rights, percentage |  |  |  |  |  |  |  | 300.00% |  |  |
Maximum | Major Rocket Incentive Shares |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-based payment award, financial performance benchmarks |  | $ 25,000 |  |  |  |  |  |  |  |  |
2011 Plan |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-based payment award, shares authorized (in shares) |  |  |  | 20,775,000 |  |  |  | 20,775,000 |  |  |
Number of shares available for issuance (in shares) |  |  |  | 3,765,113 |  |  |  | 3,765,113 |  |  |

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