XML 39 R28.htm IDEA: XBRL DOCUMENT v3.8.0.1
Description of Business and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
3 Months Ended 12 Months Ended
Dec. 22, 2018
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Net (loss) income   $ 217,940 $ (37,590) $ 248,744
Accumulated deficit   9,097,733   8,879,793
Allowance for doubtful accounts   9,200   16,848
Advertising and trade show expense   16,249 1,157  
Research and development costs   $ 6,432 $ 563  
Percentage of minimum deposit for custom and large tank fill systems   50.00%    
Percentage of restocking fees   15.00%    
Customer deposits and unearned revenue   $ 54,381   $ 97,249
Effective tax rates      
Potentially dilutive shares included in dilutive earnings per share   62,164,296   35,477,603
Minimum [Member] | Tax Cuts and Jobs Act [Member]        
Effective tax rates 35.00%      
Maximum [Member] | Tax Cuts and Jobs Act [Member]        
Effective tax rates 21.00%      
Furniture, Fixtures, Equipment and Leasehold Improvements [Member] | Minimum [Member]        
Property, plant and equipment, useful life   3 years    
Furniture, Fixtures, Equipment and Leasehold Improvements [Member] | Maximum [Member]        
Property, plant and equipment, useful life   5 years