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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt - Senior Notes and Other Borrowings (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 05, 2014	Apr. 16, 2013
Debt Instrument [Line Items]
Principal	$ 1,475,476	$ 1,599,049
Unamortized Debt Issuance Costs	11,941	12,516
Carrying Value	1,463,535	1,586,533
Loans payable and other borrowings
Debt Instrument [Line Items]
Principal	156,330	150,485
Unamortized Debt Issuance Costs	0	0
Carrying Value	156,330	150,485
Mortgage warehouse borrowings
Debt Instrument [Line Items]
Principal	69,146	198,564
Unamortized Debt Issuance Costs	0	0
Carrying Value	69,146	198,564
Revolving Credit Facility
Debt Instrument [Line Items]
Principal	0	0
Unamortized Debt Issuance Costs	0	0
Carrying Value	0	0
Senior Notes
Debt Instrument [Line Items]
Principal	1,250,000	1,250,000
Unamortized Debt Issuance Costs	11,941	12,516
Carrying Value	1,238,059	1,237,484
Senior Notes \| 5.25% Senior Notes due 2021
Debt Instrument [Line Items]
Principal	550,000	550,000
Unamortized Debt Issuance Costs	4,791	5,089
Carrying Value	$ 545,209	544,911
Stated interest rate of senior notes (as a percent)	5.25%			5.25%
Senior Notes \| 5.875% Senior Notes due 2023
Debt Instrument [Line Items]
Principal	$ 350,000	350,000
Unamortized Debt Issuance Costs	3,427	3,569
Carrying Value	$ 346,573	346,431
Stated interest rate of senior notes (as a percent)	5.875%
Senior Notes \| 5.625% Senior Notes due 2024
Debt Instrument [Line Items]
Principal	$ 350,000	350,000
Unamortized Debt Issuance Costs	3,723	3,858
Carrying Value	$ 346,277	$ 346,142
Stated interest rate of senior notes (as a percent)	5.625%		5.625%