Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation (Details)

Stock Based Compensation (Details) - USD ($)							1 Months Ended					3 Months Ended		12 Months Ended
Stock Based Compensation (Details) - USD ($)	Apr. 09, 2020	Feb. 29, 2020	Feb. 03, 2020	Jan. 01, 2020	May 18, 2016	Apr. 05, 2016	May 07, 2020	Mar. 31, 2020	Feb. 28, 2020	Aug. 31, 2019	May 31, 2018	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Annual share reserve increase (as a percent)												4.00%
Total stock-based compensation												$ 1,116,323	$ 596,693
Research and development
Total stock-based compensation												381,769	57,376
General and administrative
Total stock-based compensation												679,600	469,125
Sales and marketing
Total stock-based compensation												54,954	20,828
Total stock-based compensation, continuing operations
Total stock-based compensation												1,116,323	547,329
Total stock-based compensation, discontinued operations
Total stock-based compensation												0	49,364
Service Based Options
Total stock-based compensation												$ 800,000
Option Activity, Number of shares
Balance, beginning of period (in shares)				4,180,606								4,180,606
Granted (in shares)												3,550,583
Options exercises in period (in shares)												(25,168)
Forfeitures (in shares)												(125,000)
Expired (in shares)												(168,341)
Balance, end of period (in shares)								7,412,680				7,412,680		4,180,606
Exercisable (in shares)								2,104,285				2,104,285
Option Activity, Weighted-average exercise price
Beginning of period (in dollars per share)				$ 4.80								$ 4.80
Granted (in dollars per share)			$ 3.98									3.97
Exercised (in dollars per share)												2.95
Forfeitures (in dollars per share)												5.28
Expired (in dollars per share)												6.16
End of period (in dollars per share)								$ 4.37				4.37		$ 4.80
Exercisable (in dollars per share)								4.43				4.43
Option Activity, Fair value of options granted
Beginning of period (in dollars per share)				$ 2.67								2.67
Granted (in dollars per share)												2.51
Exercised (in dollars per share)												1.90
Forfeited (in dollars per share)												2.85
Expired (in dollars per share)												3.35
End of period (in dollars per share)								2.58				2.58		$ 2.67
Exercisable (in dollars per share)								$ 2.50				$ 2.50
Option Activity, Weighted-average remaining contractual term (in years)
Balance												8 years 6 months		7 years 10 months 25 days
Exercisable												5 years 10 months 25 days
Granted (in shares)												3,550,583
Compensation committee of annual value									$ 414,432
Outstanding intrinsic value								$ 600,000				$ 600,000
Exercisable aggregate intrinsic value													$ 500,000
Options vested (in shares)												69,046
Weighted average exercise price (in dollars per share)								$ 3.34				$ 3.34
Fair value of options vested in period												$ 100,000
Compensation not yet recognized								$ 11,600,000				$ 11,600,000
Period for recognition												3 years 3 months 19 days
Fair value assumptions
Expected annual dividend yield												0.00%
Expected volatility, minimum												69.90%
Expected volatility, maximum												71.50%
Risk-free interest rate, minimum												0.37%
Risk-free interest rate, maximum												1.48%
Stock Options With Market Based Vesting Conditions
Total stock-based compensation												$ 100,000
Option Activity, Number of shares
Balance, beginning of period (in shares)				300,000								300,000
Granted (in shares)												0
Balance, end of period (in shares)								300,000				300,000		300,000
Exercisable (in shares)								0				0
Option Activity, Weighted-average exercise price
Beginning of period (in dollars per share)				$ 4.98								$ 4.98
Granted (in dollars per share)
End of period (in dollars per share)								$ 4.98				$ 4.98		$ 4.98
Option Activity, Weighted-average remaining contractual term (in years)
Balance												9 years 2 months 12 days		9 years 4 months 24 days
Granted (in shares)												0
Aggregate intrinsic value								$ 0				$ 0
Compensation not yet recognized								$ 700,000				$ 700,000
Period for recognition												1 year 8 months
Restricted Stock Awards
Award vesting period												4 years
Total stock-based compensation												$ 200,000
Option Activity, Weighted-average remaining contractual term (in years)
Period for recognition												1 year 9 months 18 days
Non-vested RSUs Outstanding
Beginning balance of Non-vested RSAs (in shares)				267,500								267,500
RSAs granted (in shares)												0
Ending balance of Non-vested RSAs (in shares)								267,500				267,500		267,500
Weighted average grant date fair value
Nonvested RSAs weighted average grant date fair value (in dollars per share)														$ 4.92
Nonvested RSAs grants in period weighted average grant date fair value (in dollars per share)
Unrecognized compensation cost								$ 1,000,000				$ 1,000,000
Employee Stock Purchase Plan (ESPP)
Total stock-based compensation												$ 36,160
Minimum \| Service Based Options
Fair value assumptions
Expected term of options (in years)												5 years
Maximum \| Service Based Options
Fair value assumptions
Expected term of options (in years)												6 years 3 months
2016 Plan
Increase in number of shares reserved for issuance (in shares)					600,000						1,400,000.0
Common stock remaining for future issuance (in shares)					464,476			3,425,288				3,425,288
2016 Plan \| Equity Option
Award expiration period												10 years
2016 Second Amended Plan
Increase in number of shares reserved for issuance (in shares)										850,000
Employee Stock Purchase Plan (ESPP)
Common stock remaining for future issuance (in shares)								1,562,724				1,562,724
Weighted average grant date fair value
Percentage of fair market value on the lower of first day or last day of the offering period at which employees may purchase stock under the ESPP						85.00%
Maximum portion of earning an employee may contribute to the ESPP Plan						15.00%
Maximum annual amount of fair market value of the Company's common stock that a participant may accrue the rights to purchase						$ 25,000
Shares of common stock for future issuance (in shares)						500,000
Automatic increase to shares authorized as percentage of outstanding stock at end of preceding year						1.00%
Increase in shares available (in shares)				443,842
Chief Executive Officer \| Service Based Options
Option Activity, Weighted-average remaining contractual term (in years)
Annual base salary		$ 450,000						$ 35,568
Chief Executive Officer \| 2016 Plan \| Minimum \| Equity Option
Award vesting period												3 years
Chief Executive Officer \| 2016 Plan \| Maximum \| Equity Option
Award vesting period												4 years
Director \| 2016 Plan \| Minimum \| Equity Option
Award vesting period												1 year
Director \| 2016 Plan \| Maximum \| Equity Option
Award vesting period												3 years
Executives \| Service Based Options
Option Activity, Number of shares
Granted (in shares)			2,400,000
Option Activity, Weighted-average remaining contractual term (in years)
Granted (in shares)			2,400,000
Nonemployee \| Director \| Service Based Options
Option Activity, Number of shares
Granted (in shares)			500,000
Option Activity, Weighted-average remaining contractual term (in years)
Granted (in shares)			500,000
Employee \| Service Based Options
Option Activity, Number of shares
Granted (in shares)			500,000
Option Activity, Weighted-average remaining contractual term (in years)
Granted (in shares)			500,000
Subsequent Event \| Employee \| Service Based Options
Option Activity, Number of shares
Granted (in shares)	1,100,000.0
Forfeitures (in shares)							(375,000)
Option Activity, Weighted-average exercise price
Granted (in dollars per share)	$ 2.57
Option Activity, Weighted-average remaining contractual term (in years)
Granted (in shares)	1,100,000.0