Summary of Segmental Revenues and Expenses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Revenues	$ 450,211	$ 536,835	$ 517,220	$ 423,714	$ 520,972	$ 520,741	$ 483,712	$ 384,987	$ 1,927,980	$ 1,910,412	$ 1,634,906
Depreciation and amortization									17,920	17,783	19,542
Earnings (loss) before taxes and noncontrolling interests									101,065	89,338	18,019
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues									12,364	10,894	13,225
Title
Segment Reporting Information [Line Items]
Revenues									1,778,655	1,716,949	1,499,961
Depreciation and amortization									5,790	6,102	8,083
Earnings (loss) before taxes and noncontrolling interests									211,844	161,642	90,701
Mortgage Services
Segment Reporting Information [Line Items]
Revenues									135,500	173,265	118,197
Depreciation and amortization									4,801	4,105	4,383
Earnings (loss) before taxes and noncontrolling interests									12,004	46,793	32,122
Mortgage Services | Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues									9,214	7,058	10,200
Corporate
Segment Reporting Information [Line Items]
Revenues									13,825	20,198	16,748
Depreciation and amortization									7,329	7,576	7,076
Earnings (loss) before taxes and noncontrolling interests									(122,783)	(119,097)	(104,804)
Corporate | Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues									$ 3,150	$ 3,836	$ 3,025