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Leases (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Quantitative Lease Disclosures [Abstract]      
Renewal option period 5 years    
Assets [Abstract]      
Operating lease right-of-use assets $ 31,453   $ 29,958
Liabilities [Abstract]      
Sundry payables and accrued expenses 8,822   8,719
Noncurrent operating lease liabilities 23,890   22,450
Total operating lease liabilities $ 32,712   $ 31,169
Operating Leases [Abstract]      
Weighted average remaining lease term 5 years   5 years
Weighted average discount rate 3.40%   3.60%
Lease Expense [Abstract]      
Operating lease expense [1] $ 2,336 $ 2,313  
Excluded expenses of non lease 700 400  
Cash Paid for the amounts included in the measurement of lease liabilities [Abstract]      
Operating cash flows from operating leases 2,302 2,476  
Right-of-use assets obtained in exchange for new lease obligations [Abstract]      
Operating leases 3,603 $ 251  
Minimum Lease Payments [Abstract]      
2021 6,853    
2022 7,940    
2023 6,468    
2024 4,416    
2025 3,364    
Thereafter 6,084    
Total lease payments 35,125    
Less: Interest (2,413)    
Total operating lease liabilities $ 32,712   $ 31,169
Maximum [Member]      
Quantitative Lease Disclosures [Abstract]      
Remaining operating lease terms 10 years    
[1] Excludes expenses of approximately $0.7 million and $0.4 million for the three months ended March 31, 2021 and 2020, respectively, related to non-lease components such as maintenance, property taxes, etc., and operating lease expense for leases with an initial term of 12 months or less, which is not material.