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Revolving Line of Credit (Details) - USD ($)
6 Months Ended 12 Months Ended
Feb. 08, 2019
Aug. 02, 2017
Jun. 30, 2019
Dec. 31, 2018
Dec. 31, 2017
Apr. 30, 2019
Jan. 28, 2019
Revolving Line of Credit (Textual)              
Aggregate principal amount     $ 50,000     $ 50,000 $ 7,500
Maturity date Jan. 25, 2020            
Security Agreement [Member]              
Revolving Line of Credit (Textual)              
Minimum average annual balance   $ 120,000          
Revolving Credit Facility [Member]              
Revolving Line of Credit (Textual)              
Aggregate principal amount   $ 2,000,000          
CNB Note maturity date, description   The note evidences a revolving line of credit with advances that may be requested by the Company until the maturity date of August 2, 2019.          
Percentage of interest bears variable rate   0.25%          
Monthly payment, description   The Company will pay to CNB a late charge of 5.0% of any monthly payment not received by Lender within 10 calendar days after its due date. The Company may prepay the note at any time without penalty.          
Line of credit drawn     2,000,000 $ 2,000,000      
Accrued interest     $ 11,194 $ 10,931 $ 5,625    
Variable rate percentage   1.00%          
Percentage of late charges   5.00%          
Minimum average annual balance   $ 1,600,000          
Additional interest rate on fee   2.00%          
Line of credit increase over the balance         $ 1,000,000    
Revolving Credit Facility [Member] | Chief Executive Officer [Member]              
Revolving Line of Credit (Textual)              
Revolving line of credit, description   The CNB Note is personally guaranteed by Mr. Nussbaum, the Company's Chief Executive Officer pursuant to written guarantee in favor of CNB (the "CNB Guarantee"). Mr. Nussbaum and the Company are obligated to maintain an aggregate unencumbered liquidity of no less than $6,000,000 in the form of cash, repurchase agreements, certificates of deposit or marketable securities acceptable to CNB.