Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Common stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Cumulative Dividends	Other Comprehensive Income.	Non-controlling Interest in Operating Partnership	Total
Balance at Dec. 31, 2016	$ 172	$ 172,100	$ 4,103	$ (14,473)		$ 53,692	$ 215,594
Balance (in shares) at Dec. 31, 2016	17,351
Increase (decrease) in shareholders' equity
Net income			7,914			1,244	9,158
Costs in association with shelf offering, net of costs		(120)					(120)
Grant of unvested restricted stock (in shares)	205
Forfeiture of unvested restricted stock	$ (1)	(16)					(17)
Forfeiture of unvested restricted stock (in shares)	(9)
Stock based compensation		1,409					1,409
Dividends accrued or paid			(6,856)	(16,726)		(3,000)	(26,582)
Issuance of common stock as partial consideration for asset acquisition and business combination	$ 148	168,835					168,983
Issuance of common stock as partial consideration for asset acquisition and business combination (in shares)	14,815
Issuance of Common units as partial consideration for business combination						2,493	2,493
Issuance of Common units as partial consideration for asset acquisitions						10,033	10,033
Conversion of Common units to shares of common stock	$ 21	20,620				(20,641)
Conversion of Common units to shares of common stock (in shares)	2,092
Repurchase and cancellation of shares	$ (11)	(9,989)					(10,000)
Repurchase and cancellation of shares (in shares)	(1,120)
Adjustment to non-controlling interest resulting from changes in ownership of the Operating Partnership		(2,692)				2,692
Balance at Dec. 31, 2017	$ 329	350,147	5,161	(31,199)		46,513	370,951
Balance (in shares) at Dec. 31, 2017	33,334
Increase (decrease) in shareholders' equity
Net income			12,254			1,786	14,040
Costs in association with shelf offering, net of costs		(218)					(218)
Grant of unvested restricted stock (in shares)	162
Forfeiture of unvested restricted stock	$ (1)	(4)					(5)
Forfeiture of unvested restricted stock (in shares)	(11)
Stock based compensation		1,653					1,653
Dividends accrued or paid			(12,563)	(11,496)		(1,627)	(25,686)
Conversion of Common units to shares of common stock	$ 2	1,542				(1,544)
Conversion of Common units to shares of common stock (in shares)	157
Net change associated with current period hedging transactions					$ (865)		(865)
Repurchase and cancellation of shares	$ (30)	(20,567)					(20,597)
Repurchase and cancellation of shares (in shares)	(3,048)
Adjustment to non-controlling interest resulting from changes in ownership of the Operating Partnership		443				(443)
Balance at Dec. 31, 2018	$ 300	332,996	4,852	(42,695)	(865)	44,685	339,273
Balance (in shares) at Dec. 31, 2018	30,594
Increase (decrease) in shareholders' equity
Net income			13,885			965	14,850
Issuance of stock (write off of deferred offering costs)		(218)					(218)
Grant of unvested restricted stock (in shares)	226
Forfeiture of unvested restricted stock		(99)					(99)
Forfeiture of unvested restricted stock (in shares)	(25)
Stock based compensation		1,527					1,527
Stock based compensation (in shares)	2
Dividends accrued or paid			(12,486)	(6,089)		(430)	(19,005)
Conversion of Common units to shares of common stock	$ 27	26,217				(26,244)
Conversion of Common units to shares of common stock (in shares)	2,678
Net change associated with current period hedging transactions					(779)		(779)
Repurchase and cancellation of shares	$ (35)	(21,968)					(22,003)
Repurchase and cancellation of shares (in shares)	(3,523)
Adjustment to non-controlling interest resulting from changes in ownership of the Operating Partnership		(68)				68
Balance at Dec. 31, 2019	$ 292	$ 338,387	$ 6,251	$ (48,784)	$ (1,644)	$ 19,044	$ 313,546
Balance (in shares) at Dec. 31, 2019	29,952