Quarterly report pursuant to Section 13 or 15(d)

Cost of Sales (Details)

v3.20.2
Cost of Sales (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Inventory        
Cost of product sales $ 0 $ 3,428,000 $ 5,166,000 $ 15,635,000
Lower of cost or NRV adjustments 1,840,000 4,087,000 6,296,000 8,189,000
Cost of sales $ 1,840,000 $ 7,515,000 $ 11,462,000 $ 23,824,000