Shareholders' Deficit - Additional Information (Details)	6 Months Ended
	Jun. 30, 2019 Vote $ / shares shares	Dec. 31, 2018 $ / shares shares
Class Of Stock [Line Items]
Common stock authorized | shares	131,000,000	131,000,000
Common stock par value | $ / shares	$ 0.0001	$ 0.0001
Common stock voting rights description	Holders of our common stock are entitled to one vote for each share of common stock held
Number of vote for each share | Vote	1
Common Stock
Class Of Stock [Line Items]
Warrant to purchase common stock, shares | shares	20,000
Warrant exercisable term	10 years
Weighted-average exercise price of warrants | $ / shares	$ 0.37
Exercise price of warrants | $ / shares	$ 0.45
Maximum | Common Stock
Class Of Stock [Line Items]
Warrant to purchase common stock, shares | shares	55,032