Share Capital - Summary of Non-Vested Stock Option Activity (Details)	12 Months Ended
	Dec. 31, 2019 $ / shares shares	Dec. 31, 2019 $ / shares shares	Dec. 31, 2018 $ / shares shares	Dec. 31, 2018 $ / shares shares
Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares Roll Forward
Number of Options, Non-vested, Beginning balance	1,105,471	1,105,471
Number of Options, Granted	1,225,575	1,225,575	706,600	706,600
Number of Options, Vested	(681,918)	(681,918)
Number of Options, Forfeited or cancelled	(60,918)	(60,918)
Number of Options, Non-vested, Ending balance	1,588,210	1,588,210	1,105,471	1,105,471
Weighted Average Grant Date Fair Value, Non-vested, Beginning balance | (per share)	$ 4.11	$ 5.61
Weighted Average Grant Date Fair Value, Granted | (per share)	6.23	8.11	$ 3.74
Weighted Average Grant Date Fair Value, Vested | (per share)	4.79	6.24
Weighted Average Grant Date Fair Value, Forfeited or cancelled | (per share)	6.37	8.29
Weighted Average Grant Date Fair Value, Non-vested, Ending balance | (per share)	$ 5.51	$ 7.17	$ 4.11	$ 5.61