Stockholders' Equity - Transactions with Oasis Capital and Underwritten Public Offering (Details) - USD ($)					1 Months Ended					3 Months Ended	12 Months Ended
	Oct. 06, 2020	Mar. 23, 2020	Mar. 05, 2020	Jan. 07, 2019	Apr. 30, 2020	Mar. 31, 2020	Feb. 29, 2020	Nov. 30, 2019	Oct. 31, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2021	Apr. 15, 2020	Mar. 24, 2020	Mar. 22, 2020	Mar. 04, 2020	Jan. 31, 2020	Sep. 30, 2019	Aug. 31, 2019	Jul. 31, 2019	Aug. 28, 2018
Number of securities issued on conversion																						9,580
Common stock, shares issued													13,884,190
Issuance costs												$ 65,000
Registered Direct Offering
Amount of shares issued											$ 1,207,000
At The Market Offering
Issuance of common stock (In shares)											3,814,925
Issuance costs											$ 40,000
Sale of worth of shares											$ 1,300,000
Series B convertible preferred stock
Number of securities issued on conversion												985,500
Issuance costs												$ 875,000
Common stock - voting | Registered Direct Offering
Issuance of common stock (In shares)											3,814,925
Series 1 warrants
Exercise price (in dollars per share)							$ 0.6920											$ 2.00	$ 1.40	$ 2.00	$ 2.00
Class of Warrant or Right Exercised									1,250,000
Proceeds from issuance of warrants							$ 144,000
Series 2 warrants
Exercise price (in dollars per share)		$ 0.5227	$ 0.6050													$ 2.00	$ 2.00				$ 2.00
Proceeds from issuance of warrants			$ 55,000
Net proceeds from issuance of warrants		$ 628,000
Issuance costs		$ 25,000
PIPE Financing Warrants, March 2020
Proceeds from issuance of warrants						$ 720,000
Net proceeds from issuance of warrants						668,000
Issuance costs						$ 52,000
PIPE Financing Warrants, March 2020 | Private placement
Issuance of common stock (In shares)						1,714,283
Securities Purchase Agreement
Price per share				$ 52.50
Common stock, shares issued										190,476
Securities Purchase Agreement | Registered Direct Offering
Price per share										$ 14.00
Gross proceeds from issuance										$ 266,000
Issuance of common stock (In shares)										19,019
Securities Purchase Agreement | Original Equity Line Offering
Common Stock, Shares Authorized				76,190
Number of shares offered				76,190
Number of additional shares authorized				114,286
Common stock, shares issued										76,190
Securities Purchase Agreement | Option
Common stock, shares issued										114,286
Equity Line of Credit
Gross proceeds from issuance					$ 22,627
Issuance of common stock (In shares)					52,000
Amount of shares issued						$ 200,000
Term of equity purchase agreement						36 months
Shares issued in settlement of commitment fee					68,807
Fair value of equity issued					$ 33,000
Equity Line of Credit | Maximum
Aggregate amount of put option on any put date or clearing date						$ 500,000
Aggregate amount of equity purchase agreement						$ 2,000,000
Stock Plan Agreement with Poc LLc | PoC Capital, LLC
Issuance of common stock (In shares)	1,333,333
Share Price	$ 0.30
Common stock par value (in dollars per share)	$ 0.0001
November 2019 Securities Purchase Agreement | Pre-funded Warrants | Registered Direct Offering
Gross proceeds from issuance								$ 1,700,000
Number of securities issued on conversion								2,222,223
Exercise price (in dollars per share)								$ 0.81
Exercise price								$ 0.01
Gross proceeds from the issuance of common stock								$ 1,800,000
Class of Warrant or Right Exercised								986,000
Share Price								$ 0.80
Proceeds from issuance of warrants								$ 10,000
October 2019 Angel Pond Agreement
Number roof shares issued in exchange of cessation of royalty payments									166,667
December 2019 PIPE Financing | Private placement
Gross proceeds from issuance												$ 1,000,000
Number of securities issued on conversion												1,250,000
Proceeds from Issuance of Common Stock and Warrants												$ 1,500,000
Amount of shares issued												2,500,000
Proceeds from issuance of warrants												$ 500,000
Napo | Stock Plan Agreement with Poc LLc | PoC Capital, LLC
Amount of shares issued	$ 400,000
Option 1 Put | Equity Line of Credit
Issuance of common stock (In shares)						200,000
Percentage of average trading volume						20.00%
Trading days						10
Share Price						$ 0.436
Option 2 Puts | Equity Line of Credit
Percentage of average trading volume						10.00%
Share Price						$ 0.436
Option 1 and Option 2 Puts | Equity Line of Credit
Derivative Asset, Noncurrent														$ 0	$ 0