STOCK BASED COMPENSATION - Summary of Stock Option Plan Activity (Details)	3 Months Ended
Mar. 31, 2020 $ / shares shares
Units
Outstanding, Beginning balance (in shares)	3,339,244
Granted (in shares)	828,253
Exercised (in shares)	(250,149)
Canceled/Forfeited (in shares)	(14,685)
Outstanding, Ending balance (in shares)	3,902,663
Options exercisable (in shares)	1,940,328
Weighted Average Exercise Price Per Share
Outstanding, Beginning balance (usd per share) \| $ / shares	$ 18.98
Granted (usd per share) \| $ / shares	21.95
Exercised (usd per share) \| $ / shares	18.16
Canceled/Forfeited (usd per share) \| $ / shares	18.68
Outstanding, Ending balance (usd per share) \| $ / shares	19.67
Options exercisable (usd per share) \| $ / shares	$ 18.64
WLH
Units
Options exercisable (in shares)	282,470

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.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB
-Name Accounting Standards Codification
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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