Share-Based Compensation - Summary of Stock Option Activity (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2022 $ / shares shares	Dec. 31, 2021 $ / shares shares	Dec. 31, 2021 $ / shares shares	Dec. 31, 2020 $ / shares shares
Share-based Payment Arrangement [Abstract]
Number of Options, Beginning Balance | shares	54,282,752	50,427,065	50,427,065
Number of Options, Granted | shares	1,500,000	7,900,000	7,900,000
Number of Options, Exercised | shares		(2,737,326)	(2,737,326)
Number of Options, Forfeited/ Expired | shares		(1,306,987)	(1,306,987)
Number of Options, Ending Balance | shares	55,782,752	54,282,752	54,282,752	50,427,065
Weighted Average Price, Beginning Balance | $ / shares	$ 0.94	$ 0.84
Weighted Average Price, Granted | $ / shares	0.91	1.62
Weighted Average Price, Exercised | $ / shares			$ 1.04
Weighted Average Price, Forfeited/ Expired | $ / shares		0.43
Weighted Average Price, Ending Balance | $ / shares	$ 0.94	$ 0.94		$ 0.84
Weighted Average Years	2 years 9 months 14 days	2 years 11 months 19 days	2 years 11 months 19 days	3 years 8 months 19 days
Weighted Average Years, Granted	5 years	5 years	5 years