CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Parent	Common Stock	Capital in Excess of Par Value	Cumulative Net Income	Accumulated OCI	Cumulative Distributions	Non-controlling Interests	Total
Balance at beginning of period at Dec. 31, 2021	$ 736,714	$ 394	$ 856,895	$ 1,444,636	$ (172)	$ (1,565,039)	$ 8,413	$ 745,127
Balance (in shares) at Dec. 31, 2021		39,374
Equity activity
Net income	14,412			14,412			95	14,507
Stock-based compensation expense	1,925		1,925					1,925
Non-controlling interest distributions							(95)	(95)
Common stock cash distributions	(22,480)					(22,480)		(22,480)
Cash paid for taxes in lieu of common shares	(1,255)		(1,255)					(1,255)
Cash paid for taxes in lieu of common shares (in shares)		(37)
Fair market valuation adjustment for interest rate swap	4,876				4,876			4,876
Other	(6)	$ 1	(7)					(6)
Other (in shares)		123
Balance at end of period at Mar. 31, 2022	734,186	$ 395	857,558	1,459,048	4,704	(1,587,519)	8,413	742,599
Balance (in shares) at Mar. 31, 2022		39,460
Balance at beginning of period at Dec. 31, 2021	736,714	$ 394	856,895	1,444,636	(172)	(1,565,039)	8,413	745,127
Balance (in shares) at Dec. 31, 2021		39,374
Equity activity
Net income								68,997
Balance at end of period at Jun. 30, 2022	802,974	$ 404	893,154	1,513,431	6,139	(1,610,154)	7,522	810,496
Balance (in shares) at Jun. 30, 2022		40,380
Balance at beginning of period at Mar. 31, 2022	734,186	$ 395	857,558	1,459,048	4,704	(1,587,519)	8,413	742,599
Balance (in shares) at Mar. 31, 2022		39,460
Equity activity
Issuance of common stock	33,693	$ 9	33,684					33,693
Issuance of common stock (in shares)		910
Net income	54,383			54,383			107	54,490
Stock-based compensation expense	2,012		2,012					2,012
Non-controlling interest distributions							(998)	(998)
Common stock cash distributions	(22,635)					(22,635)		(22,635)
Cash paid for taxes in lieu of common shares	(100)		(100)					(100)
Cash paid for taxes in lieu of common shares (in shares)		(2)
Fair market valuation adjustment for interest rate swap	1,435				1,435			1,435
Other (in shares)		12
Balance at end of period at Jun. 30, 2022	802,974	$ 404	893,154	1,513,431	6,139	(1,610,154)	7,522	810,496
Balance (in shares) at Jun. 30, 2022		40,380
Balance at beginning of period at Dec. 31, 2022	828,367	$ 412	931,124	1,544,660	8,719	(1,656,548)	21,940	850,307
Balance (in shares) at Dec. 31, 2022		41,262
Equity activity
Issuance of common stock	1,697		1,697					1,697
Issuance of common stock (in shares)		48
Issuance of restricted stock		$ 1	(1)
Issuance of restricted stock (in shares)		128
Net income	33,134			33,134			427	33,561
Stock-based compensation expense	2,088		2,088					2,088
Non-controlling interests contributions							3,831	3,831
Non-controlling interest distributions							(406)	(406)
Common stock cash distributions	(23,563)					(23,563)		(23,563)
Cash paid for taxes in lieu of common shares	(1,538)		(1,538)					(1,538)
Cash paid for taxes in lieu of common shares (in shares)		(41)
Fair market valuation adjustment for interest rate swap	(1,362)				(1,362)			(1,362)
Other (in shares)		(1)
Balance at end of period at Mar. 31, 2023	838,823	$ 413	933,370	1,577,794	7,357	(1,680,111)	25,792	864,615
Balance (in shares) at Mar. 31, 2023		41,396
Balance at beginning of period at Dec. 31, 2022	828,367	$ 412	931,124	1,544,660	8,719	(1,656,548)	21,940	850,307
Balance (in shares) at Dec. 31, 2022		41,262
Equity activity
Net income								40,165
Balance at end of period at Jun. 30, 2023	824,666	$ 413	935,427	1,583,968	8,568	(1,703,710)	34,949	859,615
Balance (in shares) at Jun. 30, 2023		41,409
Balance at beginning of period at Mar. 31, 2023	838,823	$ 413	933,370	1,577,794	7,357	(1,680,111)	25,792	864,615
Balance (in shares) at Mar. 31, 2023		41,396
Equity activity
Issuance of restricted stock (in shares)		15
Net income	6,174			6,174			430	6,604
Stock-based compensation expense	2,138		2,138					2,138
Non-controlling interests contributions							9,133	9,133
Non-controlling interest distributions							(406)	(406)
Common stock cash distributions	(23,599)					(23,599)		(23,599)
Cash paid for taxes in lieu of common shares	(81)		(81)					(81)
Cash paid for taxes in lieu of common shares (in shares)		(2)
Fair market valuation adjustment for interest rate swap	1,211				1,211			1,211
Balance at end of period at Jun. 30, 2023	$ 824,666	$ 413	$ 935,427	$ 1,583,968	$ 8,568	$ (1,703,710)	$ 34,949	$ 859,615
Balance (in shares) at Jun. 30, 2023		41,409