Commitments and Contingencies - Additional Information (Details) - USD ($)	6 Months Ended	24 Months Ended
	Jun. 30, 2019	Dec. 31, 2007	Dec. 31, 2006
Operating Leased Assets [Line Items]
Shares issued		84,678
Royalty on net sales sublicensing gross revenue	10.00%
Minimum [Member]
Operating Leased Assets [Line Items]
Annual license fee payable			$ 5,000
Percentage of royalty on net sales	0.50%
Maximum [Member]
Operating Leased Assets [Line Items]
Annual license fee payable			$ 25,000
Percentage of royalty on net sales	3.50%