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Leases (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Leases [Abstract]      
Operating lease, liability $ 9,575 $ 11,400  
Lease, Cost [Abstract]      
Amortization of ROU assets 1,807    
Interest on lease liabilities 295    
Operating lease cost 2,933    
Short-term lease cost 9,627    
Total lease expense 14,662    
Cash paid for amounts included in measurement of lease liabilities:      
Operating cash flows from operating leases 2,934    
Operating cash flows from finance leases 295    
Financing cash flows from finance leases 1,697    
ROU assets obtained in exchange for new lease liabilities:      
Finance leases 4,148    
Operating leases $ 12,006    
Weighted-average remaining lease term (years):      
Finance leases 3 years 10 days    
Operating leases 4 years 9 months 10 days    
Weighted-average discount rate:      
Finance leases 4.90%    
Operating leases 5.00%    
Assets and Liabilities      
Finance lease, ROU assets $ 6,384    
Operating lease right-of-use assets, net 9,576    
Current portion of finance lease obligations 2,167   $ 883
Operating lease, liability, current 2,252    
Finance lease, liability, noncurrent 4,376   3,209
Operating lease, liability, noncurrent 7,323    
Finance Lease      
2020 2,426    
2021 2,426    
2022 1,492    
2023 642    
2024 37    
Thereafter 0    
Total lease payments 7,023    
Less: Interest (480)    
Present value of lease liabilities 6,543    
Less: Current portion of lease obligation (2,167)   (883)
Total long-term lease obligation 4,376   3,209
Operating Lease      
2020 2,660    
2021 2,256    
2022 1,914    
2023 1,776    
2024 1,668    
Thereafter 443    
Total lease payments 10,717    
Less: Interest (1,142)    
Present value of lease liabilities 9,575 $ 11,400  
Less: Current portion of lease obligation (2,252)    
Total long-term lease obligation $ 7,323    
Finance Lease      
2019     1,052
2020     1,052
2021     1,052
2022     909
2023     451
Thereafter     0
Total lease payments     4,516
Less: Interest     (424)
Present value of lease liabilities     4,092
Less: Current portion of lease obligation     (883)
Total long-term lease obligation     3,209
Operating Lease      
2019     4,242
2020     2,258
2021     2,107
2022     1,782
2023     1,495
Thereafter     1,488
Total     $ 13,372
Minimum      
Lessee, Lease, Description [Line Items]      
Leases, weighted average remaining lease term 1 year    
Maximum      
Lessee, Lease, Description [Line Items]      
Leases, weighted average remaining lease term 8 years