Stockholders' Equity - Restricted Stock Units (Details) - $ / shares	3 Months Ended	9 Months Ended
	Mar. 31, 2020	Sep. 30, 2019
Restricted Stock Units
Outstanding at beginning of period (in shares)		777,153
Granted (in shares)		431,250
Canceled/forfeited (in shares)		(29,800)
Outstanding at end of period (in shares)		1,178,603
Weighted Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)		$ 1.04
Granted (in dollars per share)		0.30
Canceled/forfeited (in dollars per share)		0.47
Outstanding at end of period (in dollars per share)		$ 0.78
Weighted Average Remaining Contractual Life (in years)
Outstanding at end of period		8 years
Restricted Stock Units
Restricted Stock Units
Outstanding at beginning of period (in shares)	33,051
Granted (in shares)	80,000
Released (in shares)	(19,873)
Canceled/forfeited (in shares)	0
Outstanding at end of period (in shares)	93,178
Weighted Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)	$ 2.63
Granted (in dollars per share)	0.30
Released (in dollars per share)	2.72
Canceled/forfeited (in dollars per share)	0
Outstanding at end of period (in dollars per share)	$ 0.61
Weighted Average Remaining Contractual Life (in years)
Outstanding at end of period	8 years 8 months 12 days