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General - Schedule of Remaining Performance Obligations Expected to be Recognized (Details)
Mar. 31, 2020
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligations related to engineering only paid contracts $ 6,292,000
Remaining performance obligations related to partial equipment paid contracts 2,583,000
Total remaining performance obligations 8,875,000
2020 [Member]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligations related to engineering only paid contracts 3,694,000
Remaining performance obligations related to partial equipment paid contracts 1,841,000
Total remaining performance obligations 5,535,000
2021 [Member]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligations related to engineering only paid contracts 2,151,000
Remaining performance obligations related to partial equipment paid contracts 214,000
Total remaining performance obligations 2,365,000
2022 [Member]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligations related to engineering only paid contracts 447,000
Remaining performance obligations related to partial equipment paid contracts 528,000
Total remaining performance obligations $ 975,000