10. Stockholders’ Equity (Details Narrative) - USD ($)	1 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2020	Aug. 31, 2019	Mar. 31, 2022	Mar. 31, 2021	Sep. 30, 2021	Dec. 31, 2021	Sep. 04, 2020
Class of Warrant or Right [Line Items]
Preferred stock, authorized (in shares)			10,000,000			10,000,000
Preferred stock, per value (in usd per share)			$ 0.001			$ 0.001
Preferred stock, outstanding (in shares)			0			0
Common stock, authorized (in shares)			240,000,000	240,000,000		240,000,000
Common stock voting right			Each share of common stock is entitled to one voting right
Proceeds from exercise of warrants				$ 5,868,000
September 2020 Warrants [Member]
Class of Warrant or Right [Line Items]
Number of shares of common stock issued	6,648,750
Warrants exercisable as of June 30, 2021			1.0
August 232019 [Member]
Class of Warrant or Right [Line Items]
Number of shares of common stock issued		4,475,000
August 2019 Warrants [Member]
Class of Warrant or Right [Line Items]
Warrants exercisable as of June 30, 2021			900,000
September 2020 Warrants [Member]
Class of Warrant or Right [Line Items]
Warrant description	On September 4, 2020, the Company entered into a securities purchase agreement with certain institutional investors pursuant to which the Company issued and sold an aggregate of 8,865,000 shares of common stock in a registered direct offering and issued warrants to purchase up to 6,648,750 shares of common stock in a concurrent private placement (the “September 2020 Warrants”). The September 2020 Warrants are initially exercisable for 6,648,750 shares of common stock at an exercise price per share equal to $0.84. The September 2020 Warrants became exercisable beginning on March 9, 2021 and will expire on March 9, 2026.
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 0.84				$ 0.84
Date on which warrants became exercisable					Mar. 09, 2021
Number of warrants exercised			0	4,700,000
Proceeds from exercise of warrants			$ 0	$ 3,900,000
August 2019 Warrants [Member]
Class of Warrant or Right [Line Items]
Warrant description		On August 23, 2019, the Company entered into a securities purchase agreement with certain institutional investors pursuant to which the Company issued and sold an aggregate of 4,475,000 shares of common stock in a registered direct offering and issued warrants to purchase up to 2,237,500 shares of common stock in a concurrent private placement (the “August 2019 Warrants”). The August 2019 Warrants were initially exercisable for 2,237,500 shares of common stock at an exercise price per share equal to $1.78. The August 2019 Warrants became exercisable beginning on February 27, 2020 and will expire on August 28, 2023.
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 1.78
Date on which warrants became exercisable			Feb. 27, 2020
Number of warrants exercised			0	1,000,000.0
Proceeds from exercise of warrants			$ 0	$ 1,800,000
Series A Warrants [Member]
Class of Warrant or Right [Line Items]
Warrant description					On January 24, 2019, STI and the Company closed a private placement with certain accredited investors pursuant to which, among other things, the Company issued warrants representing the right to acquire 1,463,519 shares of common stock (the “Series A Warrants”). The Series A Warrants were initially exercisable for 1,463,519 shares of common stock at an exercise price per share equal to $4.15, which was adjusted several times pursuant to the terms thereof to 3,629,023 shares of common stock at an exercise price per share equal to $0.2957 per share. The most recent adjustment to the exercise price (from $0.60 to $0.2957 per share) occurred during the three months ended September 30, 2020 as a result of the announcement of the registered direct offering of 8,865,000 shares of common stock in September 2020. The Series A Warrants were immediately exercisable upon issuance and will expire on January 31, 2024.
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 0.2957
Number of warrants exercised			0	500,000
Proceeds from exercise of warrants			$ 0	$ 100,000
Warrants exercisable as of June 30, 2021			300,000