Nature of Business and Financial Statement Presentation - Schedule of Fee and Other Income from Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Management and other fee income	$ 8,200	$ 7,600	$ 24,700	$ 23,700
Ancillary and other property income	4,700	6,300	13,500	18,400
Lease termination fees	700	700	2,300	4,100
Other	300	200	600	500
Total fee and other income	$ 13,862	$ 14,839	$ 41,092	$ 46,713