Earnings per Common Share - EPS Schedule (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net (loss) income	$ (4,405)	$ 3,299
Less: Net income attributable to noncontrolling interests in subsidiaries	0	0
Allocation of earnings to unvested restricted share awards	(134)	(144)
Net Income (Loss) Attributable to Parent, Diluted	$ (4,539)	$ 3,155
Weighted average shares outstanding - basic (in shares)	79,881	78,483
Operating partnership units	0	12
Employee restricted share awards	0	52
Weighted average shares outstanding - diluted (in shares)	79,881	78,547
Basic net income attributable to the controlling interests per common share (in dollars per share)	$ (0.06)	$ 0.04
Diluted net income attributable to the controlling interests per common share (in dollars per share)	(0.06)	0.04
Common Stock, Dividends, Per Share, Cash Paid	$ 0.30	$ 0.30