STOCK BASED COMPENSATION - Summary of Restricted Stock Unit Activity (Details)	3 Months Ended
Mar. 31, 2020 $ / shares shares
Restricted Stock Units and Performance-based Restricted Stock Units
Units
Beginning balance (in shares)	1,708,393
Granted (in shares)	663,964
Vested (in shares)	(619,402)
Forfeited (in shares)	(3,497)
Ending balance (in shares)	1,749,458
Weighted Average Grant Date Fair Value
Outstanding, Beginning balance (usd per share) \| $ / shares	$ 19.06
Granted (usd per share) \| $ / shares	24.80
Vested (usd per share) \| $ / shares	17.27
Forfeited (usd per share) \| $ / shares	18.24
Outstanding, Ending balance (usd per share) \| $ / shares	$ 21.99
Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	3 years
Minimum \| Time-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	3 years
Maximum \| Time-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	4 years
WLH \| Restricted Stock Units and Performance-based Restricted Stock Units
Units
Ending balance (in shares)	192,017

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.

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