Summary of Significant Accounting Policies - Reconciliation of Earnings Attributable to Common Shares Outstanding for the Basic and Diluted EPS (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Per Common Share data - Basic
Loss from continuing operations	$ (5,181)
Loss attributable to non-controlling interest	1,389
Preferred dividend of Series D Preferred Shares	(2,787)
Amount allocated to Restricted Common Shares	(96)
Loss from continuing operations applicable to Common Shares	(6,675)
Income from discontinued operations	4,379	4,379
Loss attributable to non-controlling interest from discontinued operations	54
Net loss attributable to Common Shares	(2,242)
Basic Weighted-Average Common Shares	35,816
Loss from continuing operations	$ (0.18)
Income from discontinued operations	$ 0.12
Net loss per Common Share - Basic	$ (0.06)
Diluted
Loss from continuing operations	(5,181)
Loss attributable to non-controlling interest	1,389
Preferred dividend of Series D Preferred Shares	(2,787)
Amount allocated to Restricted Common Shares	(96)
Loss from continuing operations applicable to Common Shares	(6,675)
Income from discontinued operations	4,379	4,379
Loss attributable to non-controlling interest from discontinued operations	54
Net loss attributable to Common Shares	(2,242)
Basic weighted-average Common Shares	35,816
Diluted weighted-average Common Shares	35,816
Loss from continuing operations	$ (0.18)
Income from discontinued operations	$ 0.12
Net loss per Common Share - Diluted	$ (0.06)
Restricted Shares [Member]
Per Common Share data - Basic
Amount allocated to Restricted Common Shares	(96)
Diluted
Amount allocated to Restricted Common Shares	$ (96)
Restricted Common Shares	0