Consolidated Statements of Equity - USD ($) shares in Thousands	Common stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Cumulative Dividends	Non-controlling interest Common Units	Non-controlling interest	Public offering	Common Units	Total
Balance at Dec. 31, 2014	$ 75	$ 68,981,000	$ (568,000)	$ (2,130,000)		$ 17,169,000			$ 83,527,000
Balance (in shares) at Dec. 31, 2014	7,731
Increase (decrease) in shareholders' equity
Net income			1,227,000			360,000
Proceeds from underwritten public offering, net of offering costs and underwriting discount	$ 34	34,553,000							34,587,000
Proceeds from underwritten public offering, net of offering costs and underwriting discount (in shares)	3,360
Repurchase and cancellation of shares		(21,000)							(21,000)
Repurchase and cancellation of shares (in shares)	(2)
Grant of unvested restricted stock (in shares)	9
Costs incurred related to offering							$ (526,000)
Forfeiture of unvested restricted stock		(16,000)							(16,000)
Forfeiture of unvested restricted stock (in shares)	(8)
Stock based compensation		957,000							957,000
Dividends and distributions accrued or paid				(5,058,000)		(1,485,000)			(6,543,000)
Issuance of stock as consideration in real estate acquisitions	$ 9	9,747,000			$ 14,936,000			$ 14,936,000	9,756,000
Issuance of stock as consideration in real estate acquisitions (in shares)	888
Adjustments to non-controlling interest resulting from changes in ownership of the Operating Partnership		818,000				(818,000)
Adjustment to arrive at redemption value of redeemable non-controlling interest		(236,000)							(236,000)
Profit Loss Before Redeemable Noncontrolling Interest									1,587,000
Balance at Dec. 31, 2015	$ 118	114,783,000	659,000	(7,188,000)		30,162,000			138,534,000
Balance (in shares) at Dec. 31, 2015	11,978
Increase (decrease) in shareholders' equity
Net income			4,302,000			1,761,000			6,063,000
Proceeds from underwritten public offering, net of offering costs and underwriting discount	$ 31	32,823,000							32,854,000
Proceeds from underwritten public offering, net of offering costs and underwriting discount (in shares)	3,100
Issuance of stock under the at-the-market offering, net of costs	$ 11	10,955,000							10,966,000
Issuance of stock under the at-the-market offering, net of costs (in shares)	995
Grant of unvested restricted stock (in shares)	119
Costs incurred related to offering							$ (450,000)		(144,000)
Forfeiture of unvested restricted stock		(3,000)							(3,000)
Forfeiture of unvested restricted stock (in shares)	(5)
Stock based compensation		1,228,000							1,228,000
Dividends and distributions accrued or paid		(2,057,000)	(858,000)	(7,285,000)		(2,958,000)			(13,158,000)
Conversion of Common units to shares of common stock	$ 12	10,946,000				(10,958,000)
Conversion of Common units to shares of common stock (in shares)	1,164
Issuance of Common shares as partial consideration for asset acquisition and business combination						29,592,000			29,592,000
Conversion of redeemable units to Common units						9,518,000			9,518,000
Adjustments to non-controlling interest resulting from changes in ownership of the Operating Partnership		3,425,000				(3,425,000)
Balance at Dec. 31, 2016	$ 172	172,100,000	4,103,000	(14,473,000)		53,692,000			215,594,000
Balance (in shares) at Dec. 31, 2016	17,351
Increase (decrease) in shareholders' equity
Net income			7,914,000			1,244,000			9,158,000
Repurchase and cancellation of shares	$ (11)	(9,989,000)							(10,000,000)
Repurchase and cancellation of shares (in shares)	(1,120)
Grant of unvested restricted stock (in shares)	205
Costs incurred related to offering		(120,000)							(120,000)
Forfeiture of unvested restricted stock	$ (1)	(16,000)							(17,000)
Forfeiture of unvested restricted stock (in shares)	(9)
Stock based compensation		1,409,000							1,409,000
Dividends and distributions accrued or paid			(6,856,000)	(16,726,000)		(3,000,000)			(26,582,000)
Conversion of Common units to shares of common stock	$ 21	20,620,000				(20,641,000)
Conversion of Common units to shares of common stock (in shares)	2,092
Issuance of Common shares as partial consideration for asset acquisition and business combination	$ 148	168,835,000							168,983,000
Issuance of Common shares as partial consideration for asset acquisition and business combination (in shares)	14,815
Issuance of Common shares as partial consideration for business combination						2,493,000			2,493,000
Issuance of stock as consideration in real estate acquisitions						10,033,000			10,033,000
Adjustments to non-controlling interest resulting from changes in ownership of the Operating Partnership		(2,692,000)				2,692,000
Balance at Dec. 31, 2017	$ 329	$ 350,147,000	$ 5,161,000	$ (31,199,000)		$ 46,513,000			$ 370,951,000
Balance (in shares) at Dec. 31, 2017	33,334