Promissory Notes - Promissory Notes Issued and Paid (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Long-term Investments
Principal	$ 57,811,000	$ 565,000
YA II PN Note 1 | Convertible Debenture
Long-term Investments
Principal	37,500,000
Gross proceeds	$ 37,500,000
Interest rate	4.00%
Conversion price (in dollars per share)	$ 2.00
YA II PN Note 2 | Convertible Debenture
Long-term Investments
Principal	$ 37,500,000
Gross proceeds	$ 37,500,000
Interest rate	4.00%
Conversion price (in dollars per share)	$ 3.31
YA II PN Note 3 | Convertible Debenture
Long-term Investments
Principal	$ 65,000,000
Gross proceeds	$ 65,000,000
Interest rate	4.00%
Conversion price (in dollars per share)	$ 4.12
YA II PN Note 4 | Convertible Debenture
Long-term Investments
Principal	$ 80,000,000
Gross proceeds	$ 80,000,000
Interest rate	4.00%
Conversion price (in dollars per share)	$ 4.95