Taxes - Significant Components of Future Income Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Tax loss carryforwards	$ 24,096	$ 26,155
Scientific research and experimental development ("SR&ED") carryforwards	5,051	5,051
Investment tax credits	4,151	4,151
Accounts payable and accrued liabilities	489	1,291
Difference between tax and book value of patent finance obligations	(153)	(343)
Difference between tax and book value of capital and intangible assets	306	(1,072)
Difference between tax and book value of loan receivable	14	27
Total future income tax asset	33,954	35,260
Valuation allowance	(19,308)	(17,583)
Net future income tax asset	$ 14,646	$ 17,677

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves and accruals, classified as other.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the provision for loan losses.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, equipment and intangibles.

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