Annual report pursuant to Section 13 and 15(d)

Income Tax - Significant Components of Company's Deferred Tax Assets and Deferred Tax Liabilities (Detail)

v3.20.1
Income Tax - Significant Components of Company's Deferred Tax Assets and Deferred Tax Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Deferred tax assets    
Tax basis in excess of book value of assets $ 891 $ 886
Non-capital loss carryforwards 33,166 37,332
Research and development deductions and credits 6,256 5,707
Stock options 315 171
§59(e) Capitalized R&D expenses 3,501 3,334
Accrued expenses 79  
Other 181 170
Total deferred tax assets 44,389 47,600
Valuation allowance (43,875) (47,123)
Net deferred assets 514 477
Deferred tax liabilities    
Intangible assets   (474)
Right of use assets (79)  
Other (435) (3)
Total deferred tax liabilities (514) $ (477)
Net deferred tax assets $ 0