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DEBT - Summary of Total Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Mar. 05, 2014	Apr. 16, 2013
Debt Instrument [Line Items]
Principal	$ 1,436,326	$ 1,508,275
Unamortized Debt Issuance Costs	9,062	10,213
Carrying Value	1,427,264	1,498,062
Letters of credit utilized	341,000	331,700
Loans payable and other borrowings
Debt Instrument [Line Items]
Principal	136,508	139,453
Unamortized Debt Issuance Costs	0	0
Carrying Value	136,508	139,453
Mortgage warehouse borrowings
Debt Instrument [Line Items]
Principal	49,818	118,822
Unamortized Debt Issuance Costs	0	0
Carrying Value	49,818	118,822
Revolving Credit Facility
Debt Instrument [Line Items]
Principal	0	0
Unamortized Debt Issuance Costs	0	0
Carrying Value	0	0
Unamortized debt issuance costs	3,100	2,000
Letters of credit utilized	48,400	47,100
Availability under Revolving Credit Facility	551,600	452,900
Senior Notes
Debt Instrument [Line Items]
Principal	1,250,000	1,250,000
Unamortized Debt Issuance Costs	9,062	10,213
Carrying Value	1,240,938	1,239,787
Senior Notes \| 5.25% Senior Notes due 2021, unsecured
Debt Instrument [Line Items]
Principal	550,000	550,000
Unamortized Debt Issuance Costs	3,294	3,892
Carrying Value	$ 546,706	546,108
Stated interest rate of senior notes	5.25%			5.25%
Senior Notes \| 5.875% Senior Notes due 2023, unsecured
Debt Instrument [Line Items]
Principal	$ 350,000	350,000
Unamortized Debt Issuance Costs	2,718	3,002
Carrying Value	$ 347,282	346,998
Stated interest rate of senior notes	5.875%
Senior Notes \| 5.625% Senior Notes due 2024, unsecured
Debt Instrument [Line Items]
Principal	$ 350,000	350,000
Unamortized Debt Issuance Costs	3,050	3,319
Carrying Value	$ 346,950	$ 346,681
Stated interest rate of senior notes	5.625%		5.625%