Stockholders' Equity (Deficit) - Summary of our Outstanding and Exercisable Warrants and Related Transactions (Details) - Warrant [Member] - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Class Of Warrant Or Right [Line Items]
Beginning balance, Warrants	103,000
Ending balance, Warrants	103,000	103,000
Beginning balance, Weighted Average Exercise Price	$ 76.19
Ending balance, Weighted Average Exercise Price	$ 76.19	$ 76.19
Warrants, Weighted Average Remaining Contractual Life (in Years)	8 years 1 month 6 days	8 years 3 months 18 days