Subsequent Event (Details) - USD ($)				1 Months Ended	3 Months Ended
	Mar. 23, 2018	Nov. 14, 2017	Nov. 01, 2017	Mar. 31, 2018	Mar. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Subsequent Event [Line Items]
Sale of stock, number of units issued (in shares)			5,525,000
Proceeds from sale of stock		$ 7,000,000
Warrant price per share (in dollars per unit)			$ 0.01
Shares outstanding (in shares)						34,702,565	24,531,964
Subsequent Event
Subsequent Event [Line Items]
Sale of stock, number of units issued (in shares)	7,968,128
Warrant issued, exercise price (in dollars per share)	$ 1.20				$ 0.80
Aggregate proceeds from warrants exercised					$ 336,622
Proceeds from sale of stock	$ 9,000,000			$ 9,000,000
Sale of stock price per share (in dollars per share/unit)	$ 1.13
Number of securities called by each warrant (in shares)	7,968,128
Warrant price per share (in dollars per unit)	$ 0.125
Expiration period	5 years
Shares outstanding (in shares)	43,105,466
Warrants outstanding (in shares)	17,602,350
Warrants outstanding, weighted average exercise price (in dollars per share)	$ 1.01
Subsequent Event | Warrant | Common Stock
Subsequent Event [Line Items]
Sale of stock, number of units issued (in shares)					420,778