Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (3,753)	$ (8,398)	$ 1,275	$ (16,663)
Unrealized gain on interest rate cap agreement:
Unrealized interest rate cap agreement gain arising during the period	0	30	0	30
Reclassification adjustment for amortization of interest expense included in net (loss) income	62	0	102	0
Unrealized gain on interest rate cap agreement	62	30	102	30
Other comprehensive income (loss):
Other comprehensive income	62	30	102	30
Comprehensive (loss) income	(3,691)	(8,368)	1,377	(16,633)
Comprehensive (loss) income attributable to noncontrolling interests	(778)	3,728	3,058	7,684
Dividends on preferred shares	7,412	5,569	12,981	11,138
Comprehensive loss attributable to common shareholders	$ (10,325)	$ (17,665)	$ (14,662)	$ (35,455)