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SHARE OPTION PLANS AND ESPP - Additional Information (Details) | 6 Months Ended
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Jun. 30, 2022 shares
Share Capital [Line Items] |
Options exercised (in shares) | 269,961
ESPP |
Share Capital [Line Items] |
Ordinary shares available for grants (in shares) | 4,908,288
Shares issued under plan (in shares) | 269,961
2015 Plan |
Share Capital [Line Items] |
Ordinary shares available for grants (in shares) | 16,945,169
2015 Plan | Options |
Share Capital [Line Items] |
Stock awards granted, expiration period (years) | 10 years
2015 Plan | Options | Minimum |
Share Capital [Line Items] |
Stock awards granted, vesting period (years) | 2 years
2015 Plan | Options | Maximum |
Share Capital [Line Items] |
Stock awards granted, vesting period (years) | 4 years
2015 Plan | Restricted share units |
Share Capital [Line Items] |
Stock awards granted, vesting period (years) | 3 years
2015 Plan | PSUs | Minimum |
Share Capital [Line Items] |
Stock awards granted, vesting period (years) | 3 years
2015 Plan | PSUs | Maximum |
Share Capital [Line Items] |
Stock awards granted, vesting period (years) | 6 years

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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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