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Debt (Details)
 3 Months Ended
Mar. 31, 2025
USD ($)
Mar. 31, 2025
KRW (₩)
Dec. 31, 2024
USD ($)
May 31, 2024
USD ($)
borrowing
May 31, 2024
KRW (₩)
borrowing
Mar. 31, 2022
USD ($)
Apr. 30, 2021
KRW (₩)
borrowing
Debt Instrument [Line Items]              
Total debt $ 1,153,912,000   $ 1,164,462,000        
Less: Unamortized discount and deferred debt costs, net (4,590,000)   (5,002,000)        
Less: Short-term borrowings and current portion of long-term debt (236,459,000)   (236,029,000)        
Long-term debt 912,863,000   923,431,000        
Collateralized debt 628,900,000            
Asset Pledged as Collateral              
Debt Instrument [Line Items]              
Collateralized debt 292,400,000            
Short-term term loans, variable rate | Japan | Subsidiary Term Loans              
Debt Instrument [Line Items]              
Total debt 0   0        
Borrowing capacity available $ 3,300,000            
Senior Notes | 6.625% Senior notes, due September 2027              
Debt Instrument [Line Items]              
Interest rate (as a percent) 6.625% 6.625%          
Total debt $ 525,000,000   525,000,000        
Subsidiary Term Loans | Term loan, fixed rate at 3.95%, due May 2027 | Korea              
Debt Instrument [Line Items]              
Interest rate (as a percent) 3.95% 3.95%          
Total debt $ 0   0        
Number of annual borrowings | borrowing       6 6   6
Borrowing capacity available $ 54,000,000 ₩ 80,000,000,000          
Subsidiary Term Loans | Term loan, fixed rate at 2.12%, due December 2028 | Korea              
Debt Instrument [Line Items]              
Interest rate (as a percent) 2.12% 2.12%          
Total debt $ 200,000,000   200,000,000        
Subsidiary Term Loans | Term loan, fixed rate at 1.20%, due December 2025 | Japan              
Debt Instrument [Line Items]              
Interest rate (as a percent) 1.20% 1.20%          
Total debt $ 10,903,000   13,868,000        
Subsidiary Term Loans | Term loan, fixed rate at 1.23%, due December 2026 | Japan              
Debt Instrument [Line Items]              
Interest rate (as a percent) 1.23% 1.23%          
Total debt $ 30,575,000   33,333,000        
Subsidiary Term Loans | Term loan, fixed rate at 1.59%, due December 2027 | Japan              
Debt Instrument [Line Items]              
Interest rate (as a percent) 1.59% 1.59%          
Total debt $ 57,582,000   59,923,000        
Subsidiary Term Loans | Term loan, fixed rate at 1.80%, due December 2028 | Japan              
Debt Instrument [Line Items]              
Interest rate (as a percent) 1.80% 1.80%          
Total debt $ 87,523,000   89,059,000        
Subsidiary Term Loans | Term loan, fixed rate at 2.05%, due December 2029 | Japan              
Debt Instrument [Line Items]              
Interest rate (as a percent) 2.05% 2.05%          
Total debt $ 108,329,000   108,779,000        
Subsidiary Term Loans | Term loans, SOFR plus 0.75%, weighted average of 5.06% as of March 31, 2025, due June 2025 | China              
Debt Instrument [Line Items]              
Interest rate spread (as a percent) 0.75%            
Weighted average interest rate (as a percent) 5.06% 5.06%          
Total debt $ 35,000,000   35,000,000        
Subsidiary Term Loans | Term loans, SOFR plus 0.75%, weighted average of 5.06% as of March 31, 2025, due 2025 | China              
Debt Instrument [Line Items]              
Interest rate spread (as a percent) 0.75%            
Weighted average interest rate (as a percent) 5.06% 5.06%          
Total debt $ 55,000,000   55,500,000        
Subsidiary Term Loans | Term loans, SOFR plus 0.95% December 2026 | China              
Debt Instrument [Line Items]              
Interest rate spread (as a percent) 0.95%            
Total debt $ 44,000,000   44,000,000        
Subsidiary Term Loans | Term loans, SOFR plus 0.95% December 2026 | China | Weighted Average              
Debt Instrument [Line Items]              
Weighted average interest rate (as a percent) 5.25% 5.25%          
Subsidiary Term Loans | Term Loan, fixed rate at 1.85%, Due April2024 | Korea              
Debt Instrument [Line Items]              
Interest rate (as a percent) 1.85% 1.85%          
Face amount of debt | ₩             ₩ 80,000,000,000
Borrowing capacity available       $ 59,000,000 ₩ 80,000,000,000.0    
Line of Credit | $600.0 million senior secured revolving credit facility, applicable bank rate plus 1.75%, due March 2027 (Singapore) | Revolving Credit Facility | Singapore              
Debt Instrument [Line Items]              
Interest rate (as a percent) 1.75% 1.75%          
Total debt $ 0   $ 0        
Borrowing capacity available $ 600,000,000            
Credit facility, borrowing capacity           $ 600,000,000  
Credit facility, base amount           $ 250,000,000  
Credit facility percentage of variable borrowings           37.50%