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Basis of Presentation and Significant Accounting Policies (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended
Jul. 18, 2019
Jun. 05, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Jan. 02, 2019
Dec. 31, 2018
Dec. 31, 2017
Significant Accounting Policies [Line Items]                
Restricted cash     $ 141,351 $ 50,266 $ 141,351   $ 130,326 $ 256,005
Accumulated other comprehensive loss       $ (22,483)     (7,052)  
Fixed cost       5.87%        
Variable rate       5.58%        
Average market price of common stock     $ 1.33   $ 1.41      
Antidilutive securities basic shares outstanding to calculate dilutive earnings     242,877   283,123      
Right of use asset and lease liability           $ 1,489,156    
Cash     $ 3,051,593 $ 5,321,344 $ 3,051,593   $ 2,317,659 $ 4,188,623
Working capital       4,900,000        
Cash equivalents and restricted cash       $ 5,700,000        
Subsequent Event [Member]                
Significant Accounting Policies [Line Items]                
Common stock shares exercised 519,186              
Proceeds from net offering $ 5,200,000              
Underwriting Agreement Member] | Aegis Capital Corp [Member]                
Significant Accounting Policies [Line Items]                
Issuance of public offering shares of common stock   11,200,000            
Underwriting Agreement Member] | Aegis Capital Corp [Member] | Maximum [Member]                
Significant Accounting Policies [Line Items]                
Option to purchase shares of common stock   1,680,000            
Customer One [Member] | Sales Revenue, Goods, Net [Member]                
Significant Accounting Policies [Line Items]                
Concentration of credit risk, percentage       36.00% 24.00%      
Customer One [Member] | Accounts Receivable [Member]                
Significant Accounting Policies [Line Items]                
Concentration of credit risk, percentage       55.00% 25.00%      
Customer Two [Member] | Sales Revenue, Goods, Net [Member]                
Significant Accounting Policies [Line Items]                
Concentration of credit risk, percentage       12.00% 14.00%      
Customer Two [Member] | Accounts Receivable [Member]                
Significant Accounting Policies [Line Items]                
Concentration of credit risk, percentage       5.00% 5.00%