Condensed Consolidated Statements of Stockholders' Equity - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid in Capital [Member]	Cumulative Net Income [Member]	Accumulated Other Comprehensive Loss [Member]	Cumulative Dividends [Member]
Beginning Balance at Dec. 31, 2016	$ 194,007	$ 0	$ 130	$ 214,323	$ 1,265	$ 0	$ (21,711)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	318		1	317
Unrecognized loss on cash flow hedges	(158)					(158)
Reclassification adjustment for losses included in net income (interest expense)	6					6
Net income	913				913
Dividends to common stockholders ($0.3875 per share)	(5,078)						(5,078)
Ending Balance at Mar. 31, 2017	$ 190,008	$ 0	$ 131	$ 214,640	$ 2,178	$ (152)	$ (26,789)