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Summary of significant accounting policies - (Tables)
6 Months Ended
Jun. 30, 2020
Accounting Policies [Abstract]  
Reconciliation of cash
The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheet that sum to the total of the same amounts shown in the statement of cash flows:
Beginning of period- December 31, 2019End of period- June 30, 2020
Cash and cash equivalents$288,028  $158,461  
Restricted cash included in deposits and other assets7,500  7,500  
Total Cash, cash equivalents and restricted cash per statement of cash flows$295,528  $165,961  
Schedule of Inventory
The following table summarizes the components of the Company’s inventory for the periods indicated:
June 30, 2020December 31, 2019
Raw materials$877  $874  
Work in progress8,666  9,652  
Finished goods8,830  8,759  
Total inventory$18,373  $19,285