Quarterly report pursuant to Section 13 or 15(d)

Cost of Sales (Details)

v3.21.1
Cost of Sales (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Inventory    
Cost of product sales $ 0 $ 823,000
Lower of cost or NRV adjustments 1,673,000 2,282,000
Cost of sales $ 1,673,000 $ 3,105,000