Shareholders' Equity - Changes in Shareholders' Equity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,232,371	$ 1,069,832	$ 1,165,088	$ 975,016
Proceeds from exercise of stock options	4	20	$ 85	20
Proceeds from exercise of stock options (shares)			13
Stock-based compensation expense	3,116	3,141	$ 12,052	13,010
Other adjustment		2		(89)
Shares withheld for net settlements of share - based awards			(3,446)	(1,301)
Issuance of common stock - ESPP	37	48	117	150
Sale of treasury shares			5,750
Net income (loss)	24,503	38,312	82,022	130,164
Other comprehensive income (loss)	(1,482)	(775)	(3,119)	(6,390)
Ending Balance	1,258,549	1,110,580	1,258,549	1,110,580
Common shares
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,303	$ 1,289	$ 1,289	$ 1,273
Beginning Balance (shares)	126,075	124,003	124,061	122,472
Proceeds from exercise of stock options (shares)	1	3	13	3
Restricted stock granted		$ 1	$ 17	$ 18
Restricted stock granted (shares)		50	1,758	1,836
Restricted stock canceled (shares)	(10)	(6)	(36)	(46)
Shares withheld for net settlements of share - based awards			$ (4)	$ (1)
Shares withheld for net settlements of share-based awards (shares)			(383)	(229)
Issuance of common stock - ESPP			$ 1
Issuance of common stock (ESPP) (in shares)	5	7	16	21
Sale of treasury shares (in shares)			642
Ending Balance	$ 1,303	$ 1,290	$ 1,303	$ 1,290
Ending Balance (shares)	126,071	124,057	126,071	124,057
Additional Paid-In Capital
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,292,826	$ 1,284,867	$ 1,291,363	$ 1,276,213
Proceeds from exercise of stock options	4	20	85	20
Stock-based compensation expense	3,116	3,141	12,052	13,010
Restricted stock granted		(1)	(17)	(18)
Shares withheld for net settlements of share - based awards			(3,442)	(1,300)
Issuance of common stock - ESPP	37	48	116	150
Sale of treasury shares			(4,174)
Ending Balance	1,295,983	1,288,075	1,295,983	1,288,075
Accumulated Deficit/Retained Earnings
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	53,338	(84,105)	(4,236)	(175,960)
Other adjustment		2		(89)
Net income (loss)	24,519	38,337	82,093	130,283
Ending Balance	77,857	(45,766)	77,857	(45,766)
Accumulated Other Comprehensive Loss
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	(18,582)	(25,839)	(16,919)	(20,216)
Other comprehensive income (loss)	(1,483)	(798)	(3,146)	(6,421)
Ending Balance	(20,065)	(26,637)	(20,065)	(26,637)
Treasury shares
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ (95,175)	$ (105,099)	$ (105,099)	$ (105,099)
Beginning Balance (shares)	4,210	4,852	4,852	4,852
Sale of treasury shares			$ 9,924
Sale of treasury shares (in shares)			(642)
Ending Balance	$ (95,175)	$ (105,099)	$ (95,175)	$ (105,099)
Ending Balance (shares)	4,210	4,852	4,210	4,852
Noncontrolling Interests
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ (1,339)	$ (1,281)	$ (1,310)	$ (1,195)
Net income (loss)	(16)	(25)	(71)	(119)
Other comprehensive income (loss)	1	23	27	31
Ending Balance	$ (1,354)	$ (1,283)	$ (1,354)	$ (1,283)