Shareholders' Equity - Changes in Shareholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,165,088	$ 975,016
Proceeds from exercise of stock options	$ 49
Proceeds from exercise of stock options (shares)	7,000
Stock-based compensation expense	$ 5,578	6,313
Shares withheld for net settlements of share - based awards	(3,445)	(1,285)
Issuance of common stock - ESPP	41	43
Sale of treasury shares	5,750
Net income (loss)	27,994	38,179
Other comprehensive income (loss)	(2,006)	2,569
Ending Balance	1,199,049	1,020,835
Common shares
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,289	$ 1,273
Beginning Balance (shares)	124,061,000	122,472,000
Proceeds from exercise of stock options (shares)	7,000
Restricted stock granted	$ 16	$ 18
Restricted stock granted (shares)	1,641,000	1,784,000
Restricted stock canceled (shares)	(18,000)	(26,000)
Shares withheld for net settlements of share - based awards	$ (4)	$ (2)
Shares withheld for net settlements of share-based awards (shares)	(383)	(226,000)
Issuance of common stock - ESPP	$ 1
Issuance of common stock (ESPP) (in shares)	5,000	7,000
Sale of treasury shares (in shares)	642
Ending Balance	$ 1,302	$ 1,289
Ending Balance (shares)	125,955,000	124,011,000
Additional Paid-In Capital
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,291,363	$ 1,276,213
Proceeds from exercise of stock options	49
Stock-based compensation expense	5,578	6,313
Restricted stock granted	(16)	(18)
Shares withheld for net settlements of share - based awards	(3,441)	(1,283)
Issuance of common stock - ESPP	40	43
Sale of treasury shares	(4,174)
Ending Balance	1,289,399	1,281,268
Retained Earnings (Accumulated Deficit)
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	(4,236)	(175,960)
Net income (loss)	28,003	38,219
Ending Balance	23,767	(137,741)
Accumulated Other Comprehensive Loss
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	(16,919)	(20,216)
Other comprehensive income (loss)	(2,016)	2,584
Ending Balance	(18,935)	(17,632)
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)
Beginning Balance (shares)	4,852,000	4,852,000
Sale of treasury shares	$ 9,924
Sale of treasury shares (in shares)	(642)
Ending Balance	$ (95,175)	$ (105,099)
Ending Balance (shares)	4,210,000	4,852,000
Noncontrolling Interests
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ (1,310)	$ (1,195)
Net income (loss)	(9)	(40)
Other comprehensive income (loss)	10	(15)
Ending Balance	$ (1,309)	$ (1,250)