Summary of Capital Expenditures Including Accrued Amounts for Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Total capital expenditures	$ 26,463	$ 16,907	$ 53,747	$ 27,710
Discontinued operations
Segment Reporting Information [Line Items]
Total capital expenditures		(214)		72
Owned and managed
Segment Reporting Information [Line Items]
Total capital expenditures	23,851	15,023	49,471	23,342
Managed-only
Segment Reporting Information [Line Items]
Total capital expenditures	767	737	1,399	1,405
Corporate and Other
Segment Reporting Information [Line Items]
Total capital expenditures	$ 1,845	$ 1,361	$ 2,877	$ 2,891