Schedule of Assets for Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total assets	$ 3,101,150	$ 3,007,425
Owned and managed
Segment Reporting Information [Line Items]
Total assets	2,733,764	2,715,719
Managed-only
Segment Reporting Information [Line Items]
Total assets	71,958	81,551
Corporate and Other
Segment Reporting Information [Line Items]
Total assets	295,428	210,140
Discontinued operations
Segment Reporting Information [Line Items]
Total assets		$ 15