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STOCKHOLDERS' EQUITY - Stock option activity (Details) | 9 Months Ended
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Sep. 30, 2022 shares
Stock options |
Equity Incentive Plans Stock Option Activity [Line Items] |
Equity awards outstanding, beginning of year | 2,467,537
Number of shares, Granted. | 2,975,000
Number of shares, Exercised or vested | (130,607)
Number of shares, Expired or Forfeited | (158,193)
Equity awards outstanding, end of period | 5,153,737
Unvested restricted stock |
Equity Incentive Plans Stock Option Activity [Line Items] |
Equity awards outstanding, beginning of year | 12,032,040
Number of shares, Granted. | 4,051,606
Number of shares, Exercised or vested | (2,581,705)
Number of shares, Expired or Forfeited | (2,075,112)
Equity awards outstanding, end of period | 11,426,829

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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 Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -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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