Earnings Per Share - Reconciliation of Numerator and Denominator (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator
Net income (loss) from continuing operations	$ 1,368	$ (9,941)	$ 1,437	$ 2,391
Less: preferred stock dividends	2,448	4,001	4,897	6,913
Less: amount allocated to participating securities	83	95	166	195
Less: loss attributable to noncontrolling interest after preferred stock dividends	(44)	(718)	(145)	(232)
Net income (loss) attributable to common stockholders	$ (1,119)	$ (13,319)	$ (3,481)	$ (4,485)
Denominator
Weighted Average Number of Shares Outstanding, Basic	88,181,117	67,910,361	85,012,106	67,899,789
Net loss per share — basic and diluted
Income (Loss) from Continuing Operations, Per Basic and Diluted Share	$ (0.01)	$ (0.20)	$ (0.04)	$ (0.07)
Restricted stock
Net loss per share — basic and diluted
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	237,382	275,426	238,598	280,442
Performance Shares [Member]
Net loss per share — basic and diluted
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	670,419	258,904	666,213	163,593