Common Shares - Summary Of Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Common Shares
Number of options, beginning of period (in shares)	1,367,000	1,367,000
Number of options, Expired (in shares)	(700,000)
Number of options, end of period (in shares)	667,000	1,367,000	1,367,000
Number of options, Exercisable (in shares)	667,000
Weighted average exercise price per option, beginning of period (in dollars per share)	$ 0.71	$ 0.71
Weighted average exercise price per option, Expired (in dollars per share)	0.75
Weighted average exercise price per option, end of period (in dollars per share)	0.67	$ 0.71	$ 0.71
Weighted average exercise price, Exercisable (in dollars per share)	$ 0.67
Weighted average remaining contractual term, Outstanding	7 months 20 days	7 months 20 days	1 year 7 months 20 days
Weighted average remaining contractual term, Exercisable	7 months 20 days
Aggregate intrinsic value, Outstanding, beginning of period (in dollars)		$ 38
Aggregate intrinsic value, Outstanding, end of period (in dollars)	$ 0		$ 38
Aggregate intrinsic value, Options, Exercisable	$ 0