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Leases (Tables)
12 Months Ended
Dec. 31, 2019
Leases [Abstract]  
Maturities of Operating Lease Liabilities As of December 31, 2019, maturities of operating lease liabilities for future annual periods are as follows:

(in thousands)
     
Year ending December 31,
     
2020
 
$
8,429
 
2021
   
4,969
 
2022
   
2,641
 
2023
   
1,582
 
2024
   
1,187
 
Thereafter
   
1,517
 
Total lease payments
   
20,325
 
Less imputed interest
   
(1,470
)
Present value of lease liabilities
 
$
18,855