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Debt - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
Debt - Additional Information (Details) - USD ($)	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Debt Instrument [Line Items]
Short-term debt	$ 343,330		$ 343,330		$ 398,595
Interest expense, debt	37,129	$ 54,533	93,573	$ 112,379
Due in 2019 [Member]
Debt Instrument [Line Items]
Debt instrument, annual principal payment	333,000		333,000
Due in 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, annual principal payment	333,000		333,000
Due in 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, annual principal payment	333,000		333,000
MGHIF Financing Agreement [Member]
Debt Instrument [Line Items]
Short-term debt	333,000		333,000		333,000
Long-term debt, outstanding	495,000		495,000		660,000
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Short-term debt	$ 10,000		$ 10,000		$ 65,000