Shareholders' Equity - Changes in Shareholders' Equity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,020,835	$ 940,173	$ 975,016	$ 912,082
Proceeds from exercise of stock options				1
Stock-based compensation expense	3,556	4,023	9,869	11,426
Dividends paid				(30,487)
Other adjustment	(91)		(91)
Shares withheld for net settlements of share - based awards	(17)	(100)	(1,302)	(2,002)
Issuance of common stock - ESPP	60	65	103	180
Purchase of treasury shares				(153)
Other adjustment to additional paid-in capital				153
Net income (loss)	53,673	41,931	91,852	92,416
Other comprehensive income (loss)	(8,184)	(1,024)	(5,615)	1,452
Ending Balance	1,069,832	985,068	1,069,832	985,068
Common shares
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,289	$ 1,272	$ 1,273	$ 1,262
Beginning Balance (shares)	124,011	122,303	122,472	121,318
Restricted stock granted		$ 2	$ 18	$ 14
Restricted stock granted (shares)	2	200	1,786	1,448
Restricted stock canceled		$ (1)
Restricted stock canceled (shares)	(14)	(93)	(40)	(111)
Shares withheld for net settlements of share - based awards			$ (2)	$ (3)
Shares withheld for net settlements of share-based awards (shares)	(3)	(12)	(229)	(256)
Issuance of common stock - ESPP (shares)	7	11	14	27
Purchase of treasury shares (in shares)				(17)
Ending Balance	$ 1,289	$ 1,273	$ 1,289	$ 1,273
Ending Balance (shares)	124,003	122,409	124,003	122,409
Additional Paid-In Capital
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,281,268	$ 1,268,027	$ 1,276,213	$ 1,262,267
Proceeds from exercise of stock options				1
Stock-based compensation expense	3,556	4,023	9,869	11,426
Restricted stock granted		(2)	(18)	(14)
Restricted stock canceled		1
Shares withheld for net settlements of share - based awards	(17)	(100)	(1,300)	(1,999)
Issuance of common stock - ESPP	60	65	103	180
Other adjustment to additional paid-in capital				153
Ending Balance	1,284,867	1,272,014	1,284,867	1,272,014
Distributions in Excess of Earnings
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	(137,741)	(202,834)	(175,960)	(222,892)
Dividends paid				(30,487)
Other adjustment	(91)		(91)
Net income (loss)	53,727	41,959	91,946	92,504
Ending Balance	(84,105)	(160,875)	(84,105)	(160,875)
Accumulated Other Comprehensive Loss
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	(17,632)	(20,110)	(20,216)	(22,589)
Other comprehensive income (loss)	(8,207)	(1,022)	(5,623)	1,457
Ending Balance	(25,839)	(21,132)	(25,839)	(21,132)
Treasury shares
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ (105,099)	$ (105,099)	$ (105,099)	$ (104,946)
Beginning Balance (shares)	4,852	4,852	4,852	4,835
Purchase of treasury shares				$ (153)
Purchase of treasury shares (in shares)				17
Ending Balance	$ (105,099)	$ (105,099)	$ (105,099)	$ (105,099)
Ending Balance (shares)	4,852	4,852	4,852	4,852
Noncontrolling Interests
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ (1,250)	$ (1,083)	$ (1,195)	$ (1,020)
Net income (loss)	(54)	(28)	(94)	(88)
Other comprehensive income (loss)	23	(2)	8	(5)
Ending Balance	$ (1,281)	$ (1,113)	$ (1,281)	$ (1,113)