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Note 9 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

			Years Ended December 31,
		2021				2020				2019
United States		$	5,301			$	(851	)		$	53,971
Canada			(30,127	)			(12,553	)			664,689
Other Foreign			(632	)			577				(207	)
Total		$	(25,458	)		$	(12,827	)		$	718,453

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Current		2021				2020				2019
United States		$	17			$	262			$	1,806
Canada			(9,486	)			(1,821	)			48,031
Other Foreign			14				-				-
Total		$	(9,455	)		$	(1,559	)			49,837
Deferred
United States			-				-				-
Canada			1,505				(155	)			(13	)
Other Foreign			(94	)			108				-
Total			1,411				(47	)			(13	)
Total income tax expense		$	(8,044	)		$	(1,606	)		$	49,824

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

		2021				2020				2019
Income tax benefit computed at federal tax rate			27.0	%			27.0	%			27.0	%
Capital gains and foreign exchange			0.0	%			1.2	%			(13.0	)%
Change in valuation allowance			4.1	%			(37.3	)%			(6.3	)%
Tax Credits generated			1.6	%			34.5	%			-
Prior year adjustments			1.1	%			1.7	%			(0.4	)%
Changes in Uncertain Tax Positions			(1.5	)%			(7.7	)%			0.2	%
Stock compensation and other			(0.7	)%			(6.9	)%			(0.6	)%
Total			31.6	%			12.5	%			6.9	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

		2021				2020
Deferred tax assets:
Noncapital losses		$	112			$	60
Research and other credits			3,360				3,020
Stock based compensation			3,235				4,036
Share issue costs			425				610
Accrued liabilities			227				194
Foreign Exchange			206				950
Total deferred tax assets			7,565				8,870
Less: Valuation allowance			(6,474	)			(7,585	)
Total deferred tax asset including valuation allowance			1,091				1,285
Deferred tax liabilities:
Depreciation			824				592
Prepaid assets			69				52
Uncollectible debts			1,057				-
Foreign exchange			14				108
Total deferred tax liabilities			1,964				752
Net deferred tax asset (liabilities)		$	(873	)		$	533

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

		2021				2020				2019
Balance as of January 1			2,060				1,056				-
Additions based on tax positions related to the current year			42				49				46
Additions for tax positions of prior years			287				955				1,010
Reductions for tax positions of prior years			-				-				-
Settlements			-				-				-
Balance at December 31			2,389				2,060				1,056

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