FAIR VALUE DISCLOSURES - Carrying Value and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Sep. 17, 2021	Jul. 31, 2020	Feb. 10, 2020	Jun. 05, 2019	Apr. 16, 2015	Mar. 05, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
IRLCs	$ 5,501	$ 2,110
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%						5.875%
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 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%
Senior Notes | 5.125% Senior Notes due 2030
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate (as a percent)	5.125%			5.125%
Line of Credit | $800 Million Revolving Credit Facility | Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Facility Amount	$ 800,000
Line of Credit | $100 Million Revolving Credit Facility | Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Facility Amount	100,000		$ 100,000
Level 2 | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	229,651	467,534
Level 2 | Carrying Value | MBSs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
MBSs	5,080	(449)
Level 2 | Carrying Value | Mortgage warehouse borrowings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	200,662	413,887
Level 2 | Carrying Value | Loans payable and other borrowings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	395,400	404,386
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	349,409	349,267
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	348,968	348,834
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	495,953	495,757
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	316,919	317,718
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	446,344	446,186
Level 2 | Carrying Value | Senior Notes | 5.125% Senior Notes due 2030
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	494,718	494,560
Level 2 | Carrying Value | Line of Credit | $800 Million Revolving Credit Facility | Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	0	0
Level 2 | Carrying Value | Line of Credit | $100 Million Revolving Credit Facility | Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	0	31,529
Level 2 | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	229,651	467,534
Level 2 | Estimated Fair Value | MBSs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
MBSs	5,080	(449)
Level 2 | Estimated Fair Value | Mortgage warehouse borrowings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	200,662	413,887
Level 2 | Estimated Fair Value | Loans payable and other borrowings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	395,400	404,386
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	354,830	365,890
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	360,150	372,750
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	520,000	560,000
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	308,250	315,750
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	463,500	502,875
Level 2 | Estimated Fair Value | Senior Notes | 5.125% Senior Notes due 2030
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	490,000	550,000
Level 2 | Estimated Fair Value | Line of Credit | $800 Million Revolving Credit Facility | Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	0	0
Level 2 | Estimated Fair Value | Line of Credit | $100 Million Revolving Credit Facility | Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	0	31,529
Level 3 | Carrying Value | IRLCs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
IRLCs	420	2,110
Level 3 | Estimated Fair Value | IRLCs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
IRLCs	420	2,110
Level 1 | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Security Investment	5,030	6,400
Level 1 | Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Security Investment	$ 5,030	$ 6,400