Capital Stock - Common Stock (Details) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Equity [Abstract]
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	30,929,331	7,861,912
Common stock, shares outstanding (in shares)	30,816,048	7,748,629