FAIR VALUE DISCLOSURES - Carrying Value and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Feb. 10, 2020	Dec. 31, 2019	Jun. 05, 2019	Mar. 05, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets, net	$ 8,711		$ 2,099
Senior Notes | 5.875% Senior Notes due 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate (as a percent)	5.875%
Senior Notes | 6.00% Senior Notes due 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate (as a percent)	6.00%
Senior Notes | 5.625% Senior Notes due 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate (as a percent)	5.625%				5.625%
Senior Notes | 5.875% Senior Notes due 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate (as a percent)	5.875%	5.875%
Senior Notes | 5.875% Senior Notes due 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate (as a percent)	5.875%			5.875%
Senior Notes | 6.625% Senior Notes due 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate (as a percent)	6.625%	6.625%
Senior Notes | 5.75% Senior Notes due 2028
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate (as a percent)	5.75%
Level 2 | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	$ 208,231		190,880
Derivative assets, net	2,686		1,932
Level 2 | Carrying Value | Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	485,000		0
Level 2 | Carrying Value | Mortgage warehouse borrowings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	154,109		123,233
Level 2 | Carrying Value | Loans payable and other borrowings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	299,184		182,531
Level 2 | Carrying Value | Senior Notes | 5.875% Senior Notes due 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	348,275		348,133
Level 2 | Carrying Value | Senior Notes | 6.00% Senior Notes due 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	366,242		0
Level 2 | Carrying Value | Senior Notes | 5.625% Senior Notes due 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	347,892		347,756
Level 2 | Carrying Value | Senior Notes | 5.875% Senior Notes due 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	436,886		0
Level 2 | Carrying Value | Senior Notes | 5.875% Senior Notes due 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	494,386		494,192
Level 2 | Carrying Value | Senior Notes | 6.625% Senior Notes due 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	323,313		0
Level 2 | Carrying Value | Senior Notes | 5.75% Senior Notes due 2028
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	445,081		444,927
Level 2 | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	208,231		190,880
Derivative assets, net	2,686		1,932
Level 2 | Estimated Fair Value | Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	485,000		0
Level 2 | Estimated Fair Value | Mortgage warehouse borrowings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	154,109		123,233
Level 2 | Estimated Fair Value | Loans payable and other borrowings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	299,184		182,531
Level 2 | Estimated Fair Value | Senior Notes | 5.875% Senior Notes due 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	343,000		378,669
Level 2 | Estimated Fair Value | Senior Notes | 6.00% Senior Notes due 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	336,000		0
Level 2 | Estimated Fair Value | Senior Notes | 5.625% Senior Notes due 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	329,000		379,453
Level 2 | Estimated Fair Value | Senior Notes | 5.875% Senior Notes due 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	406,304		0
Level 2 | Estimated Fair Value | Senior Notes | 5.875% Senior Notes due 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	464,400		548,870
Level 2 | Estimated Fair Value | Senior Notes | 6.625% Senior Notes due 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	270,000		0
Level 2 | Estimated Fair Value | Senior Notes | 5.75% Senior Notes due 2028
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	$ 401,805		$ 491,913