Stock Purchase Warrants - Schedule of Equity Classified Warrants Outstanding (Detail) - Jun. 30, 2015 - $ / shares	Total
Class of Warrant or Right [Line Items]
EXERCISE PRICE PER SHARE	$ 0.05
March 2016 | Common stock
Class of Warrant or Right [Line Items]
NUMBER OF UNDERLYING SHARES	2,006
EXERCISE PRICE PER SHARE	$ 5.00
February 2019 | Common stock
Class of Warrant or Right [Line Items]
NUMBER OF UNDERLYING SHARES	75,000
EXERCISE PRICE PER SHARE	$ 5.00
November 2019 | Common stock
Class of Warrant or Right [Line Items]
NUMBER OF UNDERLYING SHARES	75,000
EXERCISE PRICE PER SHARE	$ 5.00
August 2020 | Common stock
Class of Warrant or Right [Line Items]
NUMBER OF UNDERLYING SHARES	7,500
EXERCISE PRICE PER SHARE	$ 5.00
December 2019 | Common stock
Class of Warrant or Right [Line Items]
NUMBER OF UNDERLYING SHARES	408,295
EXERCISE PRICE PER SHARE	$ 0.05