General form of registration statement for all companies including face-amount certificate companies

Investments and Fair Value of Financial Instruments - Schedule of Investments in and Advances to Affiliates (Details)

v3.19.2
Investments and Fair Value of Financial Instruments - Schedule of Investments in and Advances to Affiliates (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Dec. 31, 2017
Investments in and Advances to Affiliates [Line Items]      
Warrants - Affiliates $ 6,067 $ 7,840 $ 26,401
Fair Value, Inputs, Level 1 [Member] | Warrants [Member]      
Investments in and Advances to Affiliates [Line Items]      
Warrants - Affiliates
Fair Value, Inputs, Level 2 [Member] | Warrants [Member]      
Investments in and Advances to Affiliates [Line Items]      
Warrants - Affiliates
Fair Value, Inputs, Level 3 [Member] | Warrants [Member]      
Investments in and Advances to Affiliates [Line Items]      
Warrants - Affiliates $ 6,067 $ 7,840 $ 26,401