Annual report pursuant to Section 13 and 15(d)

Short Term Notes Payable - Summary of Short Term Notes Payable (Parenthetical) (Detail)

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Short Term Notes Payable - Summary of Short Term Notes Payable (Parenthetical) (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Product Liability Insurance Financing [Member]    
Short-term Debt [Line Items]    
Short term note payable $ 31,985 $ 49,395
Monthly installment including principal and interest $ 3,290 $ 5,093
Interest Rate bearing 6.18% 5.93%
Maturity date Jan. 10, 2018 Jan. 10, 2017
Directors' and Officers' Liability Insurance Financing [Member]    
Short-term Debt [Line Items]    
Short term note payable $ 140,062 $ 111,730
Monthly installment including principal and interest $ 13,059 $ 10,407
Interest Rate bearing 5.09% 4.89%
Maturity date Jun. 24, 2018 Jun. 24, 2017