XML 43 R30.htm IDEA: XBRL DOCUMENT v3.20.1
Summary of Significant Accounting Policies - Schedule of Future Related to Performance Obligations (Details)
Dec. 31, 2019
USD ($)
Extended warranty service $ 41,000
2020 [Member]  
Extended warranty service 23,000
2021 [Member]  
Extended warranty service $ 18,000