Condensed Consolidated Statements Of Equity (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (loss)	Noncontrolling Interest
Common Stock, Shares, Outstanding at Dec. 31, 2018		60,048,567	44,253
Total equity at Dec. 31, 2018	$ 2,287,423	$ 60,049	$ (2,510)	$ 1,450,569	$ 700,396	$ (26,916)	$ 105,835
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	107,362				103,808		3,554
Other comprehensive income (loss), net of tax	457					457
Dividends on Common Stock	(30,332)				(30,332)
Share-based compensation, shares		48,956	(20,497)
Share-based compensation	538	$ 49	$ 1,078	(589)
Issuance of common stock, shares		280,497
Issuance of common stock	19,999	$ 280		19,719
Issuance costs	(289)			(289)
Distributions to noncontrolling interest	(4,846)						(4,846)
Common Stock, Shares, Outstanding at Mar. 31, 2019		60,378,020	23,756
Total equity at Mar. 31, 2019	2,383,702	$ 60,378	$ (1,432)	1,469,410	777,262	(26,459)	104,543
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption	3,390				3,390
Common Stock, Shares, Outstanding at Dec. 31, 2019		61,480,658	3,956
Total equity at Dec. 31, 2019	2,464,069	$ 61,481	$ (267)	1,552,788	778,776	(30,655)	101,946
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	97,224				93,174		4,050
Other comprehensive income (loss), net of tax	1,273					1,273
Dividends on Common Stock	(32,902)				(32,902)
Share-based compensation, shares		69,378	20,700
Share-based compensation	674	$ 69	$ (1,658)	2,263
Issuance of common stock, shares		1,222,942
Issuance of common stock	100,000	$ 1,223		98,777
Issuance costs	(967)			(967)
Distributions to noncontrolling interest	(4,741)						(4,741)
Common Stock, Shares, Outstanding at Mar. 31, 2020		62,772,978	24,656
Total equity at Mar. 31, 2020	2,624,423	$ 62,773	$ (1,925)	$ 1,652,861	838,841	$ (29,382)	$ 101,255
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (207)				$ (207)