CONSOLIDATED STATEMENT OF SHAREHOLDERS EQUITY - USD ($) $ in Thousands	Common Shares	Paid-in Capital	Accumulated Distributions in Excess of Earnings	Total Beneficial Interest	Noncontrolling Interest in Operating Partnership	Noncontrolling Interest in Partially Owned Properties	Accumulated Other Comprehensive Income (Loss)	Total
Beginning Balance at Dec. 31, 2013		$ 68,051	$ (12,075)	$ 55,976	$ 141,539		$ (309)	$ 197,206
Beginning Balance (in shares) at Dec. 31, 2013	5,454,000
Shares issued pursuant to trustee compensation plan		23		23				23
Shares issued pursuant to trustee compensation plan (in shares)	2,000
Contribution of assets in exchange for the issuance of noncontrolling interest shares					17,461			17,461
Shares/units redeemed		(3,338)		(3,338)	(1,566)			(4,904)
Shares/units redeemed (in shares)	(238,000)
Dividends declared			(4,948)	(4,948)	(12,954)			(17,902)
Dividends reinvested - stock dividend		3,238		3,238				$ 3,238
Dividends reinvested - stock dividend (in shares)	231,000							231,000
Issuance of shares under optional purchase plan		1,892		1,892				$ 1,892
Issuance of shares under optional purchase plan (in shares)	128,000
UPREIT units converted to REIT common shares		700		700	(700)
UPREIT units converted to REIT common shares (in shares)	47,000
Purchase of subsidary ownership from noncontrolling interest		(810)		(810)	101			(709)
Change in fair value of interest rate swaps							37	37
Distributions paid to consolidated real estate entity noncontrolling interests					(11)			(11)
Net income			2,579	2,579	6,724			9,303
Ending balance at Dec. 31, 2014		69,756	(14,444)	55,312	150,594		(272)	205,634
Ending balance (in shares) at Dec. 31, 2014	5,624,000
Issuance of common shares		25,750		25,750				25,750
Issuance of common shares (in shares)	1,677,000
Shares issued pursuant to trustee compensation plan		56		56				56
Shares issued pursuant to trustee compensation plan (in shares)	4,000
Contribution of assets in exchange for the issuance of noncontrolling interest shares					11,228			11,228
Shares/units redeemed		(1,915)		(1,915)	(633)			(2,548)
Shares/units redeemed (in shares)	(132,000)
Dividends declared			(6,885)	(6,885)	(13,976)			(20,861)
Dividends reinvested - stock dividend		4,160		4,160				$ 4,160
Dividends reinvested - stock dividend (in shares)	284,000							284,000
Issuance of shares under optional purchase plan		1,783		1,783				$ 1,783
Issuance of shares under optional purchase plan (in shares)	116,000
UPREIT units converted to REIT common shares		87		87	(87)
UPREIT units converted to REIT common shares (in shares)	6,000
Syndication costs			(1,335)	(1,335)				(1,335)
Change in fair value of interest rate swaps							53	53
Contributions from consolidated real estate entity noncontrolling interests						$ 5,123		5,123
Net income			4,286	4,286	7,684	(586)		11,384
Ending balance at Dec. 31, 2015		99,677	(18,378)	81,299	154,810	4,537	(219)	$ 240,427
Ending balance (in shares) at Dec. 31, 2015	7,579,000							7,579,000
Shares issued pursuant to trustee compensation plan		60		60				$ 60
Shares issued pursuant to trustee compensation plan (in shares)	4,000
Contribution of assets in exchange for the issuance of noncontrolling interest shares					23,468			23,468
Shares/units redeemed		(1,194)		(1,194)	(868)			(2,062)
Shares/units redeemed (in shares)	(80,000)
Dividends declared			(7,527)	(7,527)	(15,552)			(23,079)
Dividends reinvested - stock dividend		4,760		4,760				$ 4,760
Dividends reinvested - stock dividend (in shares)	315,000							315,000
Issuance of shares under optional purchase plan		2,150		2,150				$ 2,150
Issuance of shares under optional purchase plan (in shares)	136,000
UPREIT units converted to REIT common shares		754		754	(754)
UPREIT units converted to REIT common shares (in shares)	47,000
Change in fair value of interest rate swaps							74	74
Net income			4,425	4,425	9,034	(602)		12,857
Ending balance at Dec. 31, 2016		$ 106,207	$ (21,480)	$ 84,727	$ 170,138	$ 3,935	$ (145)	$ 258,655
Ending balance (in shares) at Dec. 31, 2016	8,001,000							8,001,000