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Senior Debt - Additional Information (Detail)
$ in Thousands, € in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2024
EUR (€)
Jun. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Mar. 31, 2023
USD ($)
Mar. 07, 2022
USD ($)
Line Of Credit Facility [Line Items]                
Credit facility principal payments 2023 $ 5,300   $ 5,300          
Credit facility principal payments 2024 11,300   11,300          
Credit facility principal payments 2025 111,400   111,400          
Credit facility principal payments 2026 3,900   3,900          
Credit facility principal payments 2027 $ 0   $ 0          
Debt Instrument, Interest Rate, Effective Percentage 8.12%   8.12%     7.70%    
Weighted average interest rate on outstanding borrowings 7.88%   7.88%     8.29%    
Assets Current $ 281,370   $ 281,370     $ 281,437    
Liabilities $ 358,321   $ 358,321     $ 362,800    
Revenues | €       € 750        
EFM JV [Member]                
Line Of Credit Facility [Line Items]                
Weighted average interest rate on outstanding borrowings 8.52%   8.52%     8.70%    
Assets Current $ 16,700   $ 16,700     $ 14,500    
Assets, Noncurrent 26,100   26,100     26,700    
Liabilities 30,200   30,200     12,500    
Revenues 13,200 $ 9,900 23,900   $ 19,300      
Credit Agreement [Member]                
Line Of Credit Facility [Line Items]                
Unused credit availability under credit facility $ 111,000   $ 111,000     109,400    
Credit Agreement [Member] | EFM JV [Member]                
Line Of Credit Facility [Line Items]                
Secured Debt               $ 11,000
Subsidiary, Ownership Percentage, Parent               63.00%
Federal Funds Rate [Member]                
Line Of Credit Facility [Line Items]                
Debt instrument, basis spread on variable rate     0.50% 0.50%        
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]                
Line Of Credit Facility [Line Items]                
Debt instrument, basis spread on variable rate     0.11% 0.11%        
Minimum [Member]                
Line Of Credit Facility [Line Items]                
Maximum consolidated leverage ratio 3.50%   3.50%          
Minimum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]                
Line Of Credit Facility [Line Items]                
Maximum consolidated leverage ratio 1.75%   1.75%          
Minimum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Credit Agreement [Member]                
Line Of Credit Facility [Line Items]                
Debt instrument, basis spread on variable rate     0.11% 0.11%        
Minimum [Member] | Base Rate [Member]                
Line Of Credit Facility [Line Items]                
Debt instrument, basis spread on variable rate     1.75% 1.75%        
Maximum [Member]                
Line Of Credit Facility [Line Items]                
Maximum consolidated leverage ratio 4.00%   4.00%          
Maximum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]                
Line Of Credit Facility [Line Items]                
Maximum consolidated leverage ratio 0.25%   0.25%          
Maximum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Credit Agreement [Member]                
Line Of Credit Facility [Line Items]                
Debt instrument, basis spread on variable rate     0.43% 0.43%        
Maximum [Member] | Base Rate [Member]                
Line Of Credit Facility [Line Items]                
Debt instrument, basis spread on variable rate     3.25% 3.25%        
Letters of Credit [Member]                
Line Of Credit Facility [Line Items]                
Aggregate principal amount outstanding under the credit facilities $ 13,200   $ 13,200     13,300    
Letters of Credit [Member] | EFM JV [Member]                
Line Of Credit Facility [Line Items]                
Aggregate principal amount outstanding under the credit facilities 8,100   8,100     8,900    
Bank Guarantees [Member]                
Line Of Credit Facility [Line Items]                
Bank guarantee issuance under bilateral lines and collateral             $ 80,000  
Bank guarantee agreement outstanding amount 48,300   48,300     45,800    
Bank Guarantees [Member] | Euro Denominated Bank Guarantee [Member]                
Line Of Credit Facility [Line Items]                
Bank guarantee agreement outstanding amount 1,900   1,900     1,300    
Netherlands Facility [Member] | Euro Denominated Bank Guarantee [Member]                
Line Of Credit Facility [Line Items]                
Bank guarantee agreement outstanding amount $ 2,800   $ 2,800     $ 2,300