CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Shares	Additional Paid In Capital	Cumulative Net Income	Cumulative Other Comprehensive Income (Loss)	Cumulative Common Distributions
Balance beginning (in shares) at Dec. 31, 2019		48,201,941
Balance beginning at Dec. 31, 2019	$ 1,705,754	$ 482	$ 2,612,425	$ 177,217	$ (200)	$ (1,084,170)
Increase (Decrease) in Shareholders' Equity
Share grants (in shares)		136,600
Share grants	3,324	$ 1	3,323
Shares forfeitures or repurchases (in shares)		(20,175)
Share forfeitures and repurchases	(443)		(443)
Amounts reclassified from cumulative other comprehensive income to net income	85				85
Unrealized gain on financial instruments	115				115
Net income (loss)	6,678			6,678
Distributions to common shareholders	(106,121)					(106,121)
Balance ending (in shares) at Dec. 31, 2020		48,318,366
Balance ending at Dec. 31, 2020	1,609,392	$ 483	2,615,305	183,895	0	(1,190,291)
Increase (Decrease) in Shareholders' Equity
Share grants (in shares)		145,800
Share grants	2,873	$ 1	2,872
Shares forfeitures or repurchases (in shares)		(38,501)
Share forfeitures and repurchases	(1,008)		(1,008)
Net income (loss)	(8,180)			(8,180)
Distributions to common shareholders	(106,368)					(106,368)
Balance ending (in shares) at Dec. 31, 2021		48,425,665
Balance ending at Dec. 31, 2021	1,496,709	$ 484	2,617,169	175,715	0	(1,296,659)
Increase (Decrease) in Shareholders' Equity
Share grants (in shares)		172,700
Share grants	2,916	$ 2	2,914
Shares forfeitures or repurchases (in shares)		(32,721)
Share forfeitures and repurchases	(551)		(551)
Net income (loss)	(6,109)			(6,109)
Distributions to common shareholders	(106,630)					(106,630)
Balance ending (in shares) at Dec. 31, 2022		48,565,644
Balance ending at Dec. 31, 2022	$ 1,386,335	$ 486	$ 2,619,532	$ 169,606	$ 0	$ (1,403,289)