The Company is subject to taxation in Canada and also in certain foreign tax jurisdictions. The Company's tax returns for calendar year 2012 and forward are subject to examination by the Canadian tax authorities. The Company's tax returns for fiscal year 2006 and forward are subject to examination by the U.S. federal and state tax authorities.

The Company recognizes the impact of an uncertain income tax position on its income tax return at the largest amount that is “more likely than not” to be sustained upon audit by the relevant taxing authority. An uncertain tax position will not be recognized if it has less than a 50% likelihood of being sustained.

At December 31, 2020, there were no unrecognized tax benefits. The Company believes it is reasonably possible that, within the next 12 months, the amount of unrecognized tax benefits may remain unchanged. The Company recognizes interest and penalties related to unrecognized tax benefits in its provision for income taxes. The Company had no material accrual for interest and penalties on its consolidated balance sheets at December 31, 2020 and 2019, and recognized no interest and/or penalties in the consolidated statements of operations for the years ended December 31, 2020 and 2019.

A reconciliation of income taxes computed by applying the federal statutory income tax rate of 26.5% to loss before income taxes to the total income tax benefit reported in the accompanying consolidated statements of operations is as follows (in thousands):


	Year Ended December 31,
	2020		2019
Income tax at statutory rate	$	(1,531)	$	(1,134)
Foreign rate differential	(37)		(77)
Change in valuation allowance	1,588		15,104
Share-based compensation expense	—		85
Prior year true-ups	119		(13,371)
Other differences	(135)		(607)
Provision for income taxes	$	4	$	—

Deferred income taxes reflect the net effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company’s deferred tax assets and liabilities are shown below. A valuation allowance has been recorded, as realization of such assets is uncertain. Deferred income taxes are comprised as follows (in thousands):


	December 31,
	2020		2019
Deferred tax assets:
Net operating loss and capital loss carryforwards	$	26,539	$	25,064
Intangible assets	2,381		2,319
Share-based compensation	1		28
Other	992		893
Deferred tax assets, gross	29,913		28,304
Valuation allowance for deferred tax assets	(29,854)		(28,246)
Deferred tax assets, net of valuation allowance	59		58
Deferred tax liabilities:
Indefinite-lived intangible assets	(74)		(74)
Deferred tax liabilities	(74)		(74)
Net deferred tax liabilities	$	(15)	$	(16)

Net deferred tax liabilities is included in other non-current liabilities. At December 31, 2020, the Company had Canadian net operating loss carryforwards of $41.0 million. These carryforwards will begin expiring in 2031, unless previously utilized. At December 31, 2020, the Company had U.S. federal net operating loss carryforwards of $11.8 million that begin expiring in 2034 unless previously utilized, except for $8.1 million that have no expiration date. The Company also has net capital loss carryforwards in Canada of $99.6 million, which are available indefinitely to offset taxable capital gains.