XML 44 R31.htm IDEA: XBRL DOCUMENT v3.19.1
Summary of Significant Accounting Policies - Schedule of Future Related to Performance Obligations (Details)
Dec. 31, 2018
USD ($)
Extended warranty service $ 58,000
2019 [Member]  
Extended warranty service 20,000
2020 [Member]  
Extended warranty service 20,000
2021 [Member]  
Extended warranty service $ 18,000