Consolidated Statements Of Equity - USD ($) $ in Thousands	Total	Common Shares [Member]	Common Shares [Member] Class A Common Shares	Common Shares [Member] Class B Common Shares	Preferred Shares [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Distributions in Excess of Net Income [Member]	Total Shareholders' Equity [Member]	Noncontrolling Interests Common Units And LTIP Units [Member]	Total Equity Less Consolidated Joint Venture [Member]	Consolidated Joint Venture [Member]
Beginning Balance (in shares) at Dec. 31, 2016		41,770,514			14,700,000					2,838,546
Beginning Balance at Dec. 31, 2016	$ 879,739		$ 418	$ 0	$ 147	$ 1,198,311	$ 1,373	$ (364,831)	$ 835,418	$ 44,321
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Common Shares (in shares)		(1,991,573)
Repurchase of Common Shares	(35,178)		(20)			(35,158)			(35,178)
Dividends and Distributions declared:	0		0			392			392	$ (392)
Unit Conversion (in shares)		23,964								(23,964)
Common Units Issued	4,133									$ 4,133
Common Units Issued (in shares)										225,000
Common Units Issued
Preferred Shares	(219)					(219)			(219)
Preferred Shares ATM Issuance, Net of Costs (in shares)					1,700
Common Units ($1.12 per share)
Common Shares	(46,241)								(46,241)
Preferred Shares	(24,169)							(24,169)	(24,169)
Common Units	(2,270)									$ (2,270)
LTIP Units	(1,452)									(1,452)
Dividend Reinvestment Plan (in shares)		4,425
Share Based Compensation:	81					81			81
Equity Contribution to Consolidated Joint Venture
Change in Fair Value of Derivative Instruments			1			28			29	$ 779	$ 808
Grants (in shares)		109,331								183,784
Adjustment to Record Noncontrolling Interest at Redemption Value						1,511			1,511	$ 3,935	5,446
Balance at December 31, 2019							2,376		2,376	160	2,536
Adjustment to Record Noncontrolling Interest at Redemption Value	0
Net Income (Loss)	104,940							99,868	99,868	5,072	104,940
Ending Balance at Dec. 31, 2017	888,154		399	0	$ 147	1,164,946	3,749	(335,373)	833,868	$ 54,286	888,154	$ 0
Ending Balance (in shares) at Dec. 31, 2017		39,916,661			14,701,700					3,223,366
Cumulative Effect of Adoption of ASC 610-20	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Common Shares (in shares)	(635,590)	(635,590)
Repurchase of Common Shares			(6)			(10,827)			(10,833)		(10,833)
Dividends and Distributions declared:			1			1,172			1,173	$ (1,173)
Unit Conversion (in shares)	62,807	62,807								(62,807)
Common Units Issued
Preferred Shares						(128)			(128)		(128)
Preferred Shares ATM Issuance, Net of Costs (in shares)					1,514
Common Units ($1.12 per share)
Common Shares								(44,119)	(44,119)		(44,119)
Preferred Shares								(24,174)	(24,174)		(24,174)
Common Units										$ (2,331)	(2,331)
LTIP Units										$ (1,980)	(1,980)
Dividend Reinvestment Plan (in shares)		4,132
Share Based Compensation:	$ 77					77			77		77
Equity Contribution to Consolidated Joint Venture
Change in Fair Value of Derivative Instruments			1			997			998		998
Grants (in shares)		110,616								589,106
Adjustment to Record Noncontrolling Interest at Redemption Value						2,247			2,247	$ 8,293	10,540
Noncontrolling Interest, Increase from Subsidiary Equity Issuance												3,417
Balance at December 31, 2019	516						478		478	38	516
Adjustment to Record Noncontrolling Interest at Redemption Value	(2,708)					(2,708)			(2,708)		(2,708)	2,708
Net Income (Loss)	8,365							12,698	12,698	(916)	11,782	(3,417)
Ending Balance at Dec. 31, 2018	954,815		395	0	$ 147	1,155,776	4,227	(267,740)	892,805	$ 62,010	954,815	2,708
Ending Balance (in shares) at Dec. 31, 2018		39,458,626			14,703,214					3,749,665
Cumulative Effect of Adoption of ASC 610-20	$ 129,021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Common Shares (in shares)	(933,436)	(933,436)
Repurchase of Common Shares			(9)			(14,277)			(14,286)		(14,286)
Unit Conversion (in shares)	0
Common Units ($1.12 per share)
Common Shares								(43,600)	(43,600)		(43,600)
Preferred Shares								(24,174)	(24,174)		(24,174)
Common Units										$ (2,314)	(2,314)
LTIP Units										$ (2,601)	(2,601)
Dividend Reinvestment Plan (in shares)		3,760
Share Based Compensation:	$ 60					60			60		60
Equity Contribution to Consolidated Joint Venture
Change in Fair Value of Derivative Instruments			1			675			676		676
Grants (in shares)		123,700								530,281
Adjustment to Record Noncontrolling Interest at Redemption Value						3,062			3,062	$ 9,693	12,755
Noncontrolling Interest, Increase from Subsidiary Equity Issuance												300
Balance at December 31, 2019	(3,495)						(3,217)		(3,217)	(278)	(3,495)
Adjustment to Record Noncontrolling Interest at Redemption Value	(488)					(488)			(488)		(488)	488
Net Income (Loss)	(5,847)							(3,181)	(3,181)	(2,366)	(5,547)	(300)
Ending Balance at Dec. 31, 2019	871,801		$ 387	$ 0	$ 147	$ 1,144,808	$ 1,010	$ (338,695)	$ 807,657	$ 64,144	$ 871,801	$ 3,196
Ending Balance (in shares) at Dec. 31, 2019		38,652,650			14,703,214					4,279,946
Cumulative Effect of Adoption of ASC 610-20	$ 0