XML 73 R56.htm IDEA: XBRL DOCUMENT v3.20.4
Revenue from Contracts with Customers (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]    
Product sales as a percentage of total revenue (in percentage) 95.00% 95.00%
Disaggregation of Revenue    
Revenue $ 53,141 $ 119,353
Products    
Disaggregation of Revenue    
Revenue 50,478 115,683
Services    
Disaggregation of Revenue    
Revenue $ 2,663 $ 3,670