Share Capital - Summary of Non-Vested Stock Option Activity (Details)	12 Months Ended
	Dec. 31, 2020 $ / shares shares	Dec. 31, 2020 $ / shares shares	Dec. 31, 2019 $ / shares shares	Dec. 31, 2019 $ / shares shares
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares Roll Forward
Number of Options, Non-vested, Beginning balance	1,588,210	1,588,210
Number of Options, Granted	1,482,250	1,482,250	1,225,575	1,225,575
Number of Options, Vested	(688,590)	(688,590)
Number of Options, Forfeited or cancelled	(45,433)	(45,433)
Number of Options, Non-vested, Ending balance	2,336,437	2,336,437	1,588,210	1,588,210
Weighted Average Grant Date Fair Value, Non-vested, Beginning balance | (per share)	$ 5.51	$ 7.17
Weighted Average Grant Date Fair Value, Granted | (per share)	7.46	9.50	$ 6.23
Weighted Average Grant Date Fair Value, Vested | (per share)	5.37	6.84
Weighted Average Grant Date Fair Value, Forfeited or cancelled | (per share)	5.83	7.43
Weighted Average Grant Date Fair Value, Non-vested, Ending balance | (per share)	$ 6.78	$ 8.64	$ 5.51	$ 7.17