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STOCKHOLDER’S EQUITY AND EQUITY-BASED COMPENSATION - Summary of Stock Option Activity (Details) - Stock options - $ / shares shares in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
WUP Stock Option Plan |  |
Number of WUP Stock Options |  |
Beginning balance (in shares) | 15,713 |
Granted (in shares) | 0 |
Exercised (in shares) | 0 |
Forfeited (in shares) | (2,483) |
Expired (in shares) | 0 |
Ending balance (in shares) | 13,230 |
Exercisable (in shares) | 12,139 |
Weighted- Average Exercise Price |  |
Beginning balance (in dollars per share) | $ 7.52 |
Granted (in dollars per share) | 0 |
Exercised (in dollars per share) | 0 |
Forfeited (in dollars per share) | 7.61 |
Expired (in dollars per share) | 0 |
Ending balance (in dollars per share) | 7.50 |
Exercisable (in dollars per share) | 7.45 |
Weighted-Average Grant Date Fair Value |  |
Beginning balance (in dollars per share) | 1.19 | $ 1.19
Granted (in dollars per share) | 0 |
Exercised (in dollars per share) | 0 |
Forfeited (in dollars per share) | 1.16 |
Expired (in dollars per share) | 0 |
Ending balance (in dollars per share) | 1.19 |
Exercisable (in dollars per share) | $ 1.12 |
2021 LTIP |  |
Number of WUP Stock Options |  |
Beginning balance (in shares) | 921 |
Granted (in shares) | 0 |
Exercised (in shares) | 0 |
Forfeited (in shares) | 0 |
Expired (in shares) | 0 |
Ending balance (in shares) | 921 |
Exercisable (in shares) | 384 |
Weighted- Average Exercise Price |  |
Beginning balance (in dollars per share) | $ 10.00 |
Granted (in dollars per share) | 0 |
Exercised (in dollars per share) | 0 |
Forfeited (in dollars per share) | 0 |
Expired (in dollars per share) | 0 |
Ending balance (in dollars per share) | 10.00 |
Exercisable (in dollars per share) | 10.00 |
Weighted-Average Grant Date Fair Value |  |
Beginning balance (in dollars per share) | 4.75 | $ 4.75
Granted (in dollars per share) | 0 |
Exercised (in dollars per share) | 0 |
Forfeited (in dollars per share) | 0 |
Expired (in dollars per share) | 0 |
Ending balance (in dollars per share) | 4.75 |
Exercisable (in dollars per share) | $ 4.75 |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(04) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(03) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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