Nature of Business and Financial Statement Presentation - Schedule of Fee and Other Income from Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Management and other fee income	$ 9,400	$ 8,200
Ancillary and other property income	4,300	4,100
Lease termination fees	200	1,200
Other	100	0
Total fee and other income	$ 14,017	$ 13,521