XML 28 R18.htm IDEA: XBRL DOCUMENT v3.21.1
INVENTORY (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Provision for Other Losses $ 3,341,000 $ 3,518,000
Reversal of Inventory Reserves $ 4,769,000 $ 4,759,000