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Summary of Significant Accounting Policies and Other Information - Schedule of Inventory, Current (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Inventories      
Raw materials $ 120,237   $ 90,677
Work in process 3,422   2,007
Finished goods 19,704   19,119
Total inventories 143,363   111,803
Inventory allowance (3,042)   (2,964)
Inventories, net 140,321   $ 108,839
Inventory Allowance      
Balance at beginning of period 2,964 $ 5,730  
Charged to expense 897 41  
Write-offs (819) (878)  
Balance at end of period $ 3,042 $ 4,893