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Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Aug. 31, 2020
Stockholders Equity Note [Line Items]
Common stock, no par value	$ 0			$ 0		$ 0
Options outstanding	4,466	4,337	4,051	4,466		4,259
Exercise of options (in shares)	151	19	26
Number of stock options forfeited (in shares)	30		382
Number of Options Granted	310	305	200
Proceeds from issuance of stock options				$ 249	$ 24
Cash expense capitalized, warrant issues				175
Non cash expense capitalized, warrant issues				$ 441
Equity Incentive Plan
Stockholders Equity Note [Line Items]
Exercise of options (in shares)	151			196
Number of Options Granted	310			815
Proceeds from issuance of stock options	$ 188			$ 249
Shares issuable under Stock Option Plan, as percent of shares outstanding				25.00%
Vesting period				3 years
Expiration term				10 years
Stock Option In Canadian Dollars [Member]
Stockholders Equity Note [Line Items]
Options outstanding							0
Stock Option In Us Dollars [Member] | Equity Incentive Plan
Stockholders Equity Note [Line Items]
Options outstanding	4,466			4,466
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number	3,448			3,448
U.S.dollars [Member]
Stockholders Equity Note [Line Items]
Class Or Warrant Or Right Outstanding Weighted Average Remaining Contractual Terms				5 years 3 months 18 days
Maximum | Equity Incentive Plan
Stockholders Equity Note [Line Items]
Shares issuable under Stock Option Plan	6,559			6,559

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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