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Leases (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
Lessee, Lease, Description [Line Items]          
ROU assets $ 34,428   $ 34,428 $ 31,724  
Current lease liability 11,045   11,045    
Long term lease liability 24,186   24,186    
Lease Liabilities 35,231   35,231 $ 32,579  
Operating lease cost 3,889   7,832    
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 6,590   6,590    
Future minimum lease payments 2020 10,823   10,823    
Future minimum lease payments 2021 8,213   8,213    
Future minimum lease payments 2022 4,013   4,013    
Future minimum lease payments 2023 2,761   2,761    
Future minimum lease payments after 2023 8,054   8,054    
Total lease payments 40,454   40,454    
Less: Interest $ 5,223   $ 5,223    
Weighted-average remaining lease term (years) 6 years   6 years    
Weighted-average discount rate 3.96%   3.96%    
Operating cash flows from operating leases   $ 6,770      
Leased assets obtained in exchange for new operating lease liabilities   $ 8,690      
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