Earnings Per Share (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
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Distributions to holders of certain restricted common shares charged against earnings	$ 2,390	$ 1,819
Numerator:
Net income	2,144	1,509	$ 3,701	$ 6,597
Less: Net income attributable to noncontrolling interests	(161)	(25)	(279)	(116)
Distributions paid on unvested restricted shares	(105)	(197)	(196)	(352)
Net income attributable to common shareholders excluding amounts attributable to unvested restricted shares	$ 1,878	$ 1,287	$ 3,226	$ 6,129
Denominator:
Weighted average number of common shares - basic (in shares)	35,716,000	26,819,000	32,583,000	26,712,000
Effect of dilutive securities:
Unvested restricted shares (in shares)	828,000	694,000	910,000	789,000
Weighted average number of common shares - dilutive (in shares)	36,544,000	27,513,000	33,493,000	27,501,000
Basic:
Net income attributable to common shareholders excluding amounts attributable to unvested restricted shares (in dollars per share)	$ 0.05	$ 0.05	$ 0.10	$ 0.23
Diluted:
Net income attributable to common shareholders excluding amounts attributable to unvested restricted shares (in dollars per share)	$ 0.05	$ 0.05	$ 0.10	$ 0.22
OP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
OP units excluded from diluted earnings per share because their effect would be anti-dilutive	1,086,332	484,422	1,093,042	487,722
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Distributions to holders of certain restricted common shares	$ 109	$ 197	$ 204	$ 352
Distributions to holders of certain restricted common shares charged against earnings	$ 4	$ 0	$ 8	$ 0