Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details Textual)

v3.21.1
Summary of Significant Accounting Policies (Details Textual)
3 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
a
Jun. 30, 2016
USD ($)
Mar. 31, 2021
USD ($)
a
Mar. 31, 2020
USD ($)
Apr. 07, 2015
a
Apr. 02, 2013
a
Property, Plant and Equipment [Line Items]            
Cash, FDIC Insured Amount $ 250,000   $ 250,000      
Inventory Write-down     600,000 $ 2,000,000.0    
Depreciation     200,000 400,000    
Area of Real Estate Property | a           16
Proceeds from Sale of Property Held-for-sale   $ 264,000        
Capitalized Contract Cost, Net $ 0   $ 0 $ 0    
PPP2            
Property, Plant and Equipment [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage 1.00%   1.00%      
IBW [Member]            
Property, Plant and Equipment [Line Items]            
Inventory Write-down $ 300,000          
Machinery and Equipment [Member] | Minimum [Member]            
Property, Plant and Equipment [Line Items]            
Property, Plant and Equipment, Useful Life     5 years      
Machinery and Equipment [Member] | Maximum [Member]            
Property, Plant and Equipment [Line Items]            
Property, Plant and Equipment, Useful Life     7 years      
Land available-for-sale [Member]            
Property, Plant and Equipment [Line Items]            
Area of Real Estate Property | a         4  
Land [Member]            
Property, Plant and Equipment [Line Items]            
Area of Real Estate Property | a 12   12      
3570 Computer and office Equipment [Member] | Minimum [Member]            
Property, Plant and Equipment [Line Items]            
Property, Plant and Equipment, Useful Life     2 years      
3570 Computer and office Equipment [Member] | Maximum [Member]            
Property, Plant and Equipment [Line Items]            
Property, Plant and Equipment, Useful Life     5 years