Schedule of Outstanding Warrants to Purchase Common Stock (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Class of Warrant or Right [Line Items]
Common stock purchase warrants issued and outstanding	12,315,328	17,249,757
Weighted average exercise price /share	$ 1.70	$ 1.68
Series Z Warrants [Member]
Class of Warrant or Right [Line Items]
Common stock purchase warrants issued and outstanding	11,937,455	16,814,939
Weighted average exercise price /share	$ 1.60	$ 1.60
Warrants expiration date	2024-04	2024-04
UPO - Series Z Warrants [Member]
Class of Warrant or Right [Line Items]
Common stock purchase warrants issued and outstanding		53,000
Weighted average exercise price /share		$ 1.60
Warrants expiration date	2021-01	2021-01
Series W Warrants [Member]
Class of Warrant or Right [Line Items]
Common stock purchase warrants issued and outstanding	377,873	381,818
Weighted average exercise price /share	$ 5.00	$ 5.00
Warrants expiration date	2022-01	2022-01