Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Treasury Shares	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Noncontrolling Interests
Beginning Balance at Dec. 31, 2021	$ 1,307,704	$ 140	$ 368,595	$ (263)	$ 1,194	$ 702,759	$ 235,279
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	107,610					85,307	22,303
Other comprehensive income	11,721				11,721
Amounts reclassified from Accumulated other comprehensive income	2,175				2,175
Contributions from noncontrolling interests	2,450						2,450
Distributions to noncontrolling interests	(9,980)						(9,980)
Stock awards, stock option exercises and other shares issued to employees and directors, net of income tax	7,708	2	10,091	(2,385)
Dividends declared per common share	(12,182)					(12,182)
Restricted share award dividend equivalents	0		54	335		(389)
Ending Balance at Jun. 30, 2022	1,417,206	142	378,740	(2,313)	15,090	775,495	250,052
Beginning Balance at Mar. 31, 2022	1,317,221	142	375,794	(2,265)	13,555	701,799	228,196
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	101,661					79,805	21,856
Other comprehensive income	750				750
Amounts reclassified from Accumulated other comprehensive income	785				785
Stock awards, stock option exercises and other shares issued to employees and directors, net of income tax	2,883		2,946	(63)
Dividends declared per common share	(6,094)					(6,094)
Restricted share award dividend equivalents	0			15		(15)
Ending Balance at Jun. 30, 2022	1,417,206	142	378,740	(2,313)	15,090	775,495	250,052
Beginning Balance at Dec. 31, 2022	1,429,769	142	385,248	(15,043)	20,484	807,770	231,168
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	23,569					40,296	(16,727)
Other comprehensive income	10,073				10,073
Amounts reclassified from Accumulated other comprehensive income	(5,075)				(5,075)
Distributions to noncontrolling interests	(24,344)						(24,344)
Deconsolidation of joint venture	17,399						17,399
Stock awards, stock option exercises and other shares issued to employees and directors, net of income tax	861		(5,494)	6,355
Purchase of treasury shares	(1,747)			(1,747)
Dividends declared per common share	(12,485)					(12,485)
Restricted share award dividend equivalents	462		622	165		(325)
Ending Balance at Jun. 30, 2023	1,438,482	142	380,376	(10,270)	25,482	835,256	207,496
Beginning Balance at Mar. 31, 2023	1,346,412	142	377,768	(11,006)	16,267	786,420	176,821
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	82,686					55,046	27,640
Other comprehensive income	11,957				11,957
Amounts reclassified from Accumulated other comprehensive income	(2,742)				(2,742)
Distributions to noncontrolling interests	(14,364)						(14,364)
Deconsolidation of joint venture	17,399						17,399
Stock awards, stock option exercises and other shares issued to employees and directors, net of income tax	3,405		2,593	812
Purchase of treasury shares	(76)			(76)
Dividends declared per common share	(6,245)					(6,245)
Restricted share award dividend equivalents	50		15			35
Ending Balance at Jun. 30, 2023	$ 1,438,482	$ 142	$ 380,376	$ (10,270)	$ 25,482	$ 835,256	$ 207,496