Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment, net - Narrative (Details)

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Property and Equipment, net - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Property, Plant and Equipment [Line Items]          
Depreciation $ 2,300 $ 2,300 $ 4,800 $ 4,500  
Property, Plant and Equipment, Net 68,659   68,659   $ 67,344
Construction in progress          
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Net 6,681   6,681   $ 2,294
Construction in progress | STK          
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Net $ 3,600   $ 3,600