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Leases (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Mar. 31, 2019
Sep. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
Lessee, Lease, Description [Line Items]          
ROU assets $ 31,804   $ 31,804 $ 31,724  
Current lease liability 10,525   10,525    
Long term lease liability 22,037   22,037    
Lease Liabilities 32,562   32,562 $ 32,579  
Operating lease cost 4,095   11,927    
Minimum rental commitments 2019         $ 11,931
Minimum rental commitments 2020         8,322
Minimum rental commitments 2021         5,888
Minimum rental commitments 2022         2,898
Minimum rental commitments 2023         2,064
Minimum rental commitments thereafter         $ 7,659
Future minimum lease payments 2019 3,238   3,238    
Future minimum lease payments 2020 10,926   10,926    
Future minimum lease payments 2021 8,389   8,389    
Future minimum lease payments 2022 4,155   4,155    
Future minimum lease payments 2023 2,771   2,771    
Future minimum lease payments after 2023 7,894   7,894    
Total lease payments 37,373   37,373    
Less: Interest $ 4,811   $ 4,811    
Weighted-average remaining lease term (years) 6 years   6 years    
Weighted-average discount rate 3.95%   3.95%    
Operating cash flows from operating leases   $ 9,967      
Leased assets obtained in exchange for new operating lease liabilities   $ 9,692      
Minimum [Member]          
Lessee, Lease, Description [Line Items]          
Remaining lease term     1 year    
Renewal periods 1 year   1 year    
Maximum [Member]          
Lessee, Lease, Description [Line Items]          
Remaining lease term     10 years    
Renewal periods 5 years   5 years