Subsequent Events - Oasis Equity Lines (Details) - $ / shares	Apr. 01, 2019	Jan. 07, 2019	May 18, 2018	Mar. 12, 2018	Mar. 11, 2018
Subsequent Events.
Number of shares authorizes to issue			150,000,000	500,000,000	250,000,000
Original Equity Line Offering | Securities purchase agreement | Subsequent event
Subsequent Events.
Number of shares authorizes to issue		5,633,333
Number of shares offered		5,333,333
Number of commitment shares issued		300,000
Price per share		$ 0.75
Number of additional shares authorized to issue		8,000,000
Number of shares issued		8,000,000
April Equity Line Offering | Securities purchase agreement | Subsequent event
Subsequent Events.
Number of shares authorizes to issue	20,000,000
Price per share	$ 0.28
Number of shares issued	20,000,000