MGHIF financing (Details) - USD ($)			1 Months Ended			3 Months Ended
	Jul. 14, 2018	Jun. 11, 2018	Jul. 30, 2018	Jun. 28, 2017	Jul. 31, 2015	Mar. 31, 2020	Mar. 31, 2019
Common Stock And Note Purchase Agreement [Line Items]
Proceeds from issuance of common stock, net of issuance costs						$ 5,477,432	$ 4,782,509
MGHIF Financing Agreement [Member]
Common Stock And Note Purchase Agreement [Line Items]
Stock issued during period, shares, new issues					2,273
Shares issued, price per share					$ 2,200
Proceeds from issuance of common stock, net of issuance costs					$ 5,000,000
Debt instrument, interest rate, stated percentage					8.00%
Debt instrument, face amount					$ 1,000,000
MGHIF Financing Agreement [Member] | The Allonge [Member]
Common Stock And Note Purchase Agreement [Line Items]
Accrued and unpaid interest	$ 285,512
Revised and extended the maturity date, payment terms		Six semi-annual payments
Annual payments plus accrued and unpaid interest		$ 166,667
Beginning date of debt maturity		Jan. 02, 2019
Ending date of debt maturity		Jul. 01, 2021
Unamortized debt issuance costs		$ 7,000
Amended and Restated MGHIF Financing Agreement [Member]
Common Stock And Note Purchase Agreement [Line Items]
Debt instrument, interest rate, stated percentage				10.00%
Debt instrument, extended maturity date				Jul. 14, 2018
Issuance of common stock warrants to purchase				656
Net of discounts and financing costs						$ 497,000
Common Stock [Member]
Common Stock And Note Purchase Agreement [Line Items]
Stock issued during period, shares, new issues						2,814,934
Private Placement [Member] | Common Stock [Member] | MGHIF Financing Agreement [Member] | The Allonge [Member]
Common Stock And Note Purchase Agreement [Line Items]
Stock issued during period, shares, new issues			7,212
Accrued and unpaid interest			$ 285,512
Accrued and unpaid interest due date			Jul. 14, 2018