Asset Retirement Obligation (Tables)
 3 Months Ended
May 31, 2020
Asset Retirement Obligation Disclosure [Abstract]  
Summary of Asset Retirement Obligation
    $
Balance, February 28, 2019     29,272  
Foreign exchange adjustment     63  
Accretion expense     2,975  
Balance, February 29, 2020     32,310  
Foreign exchange adjustment     (831 )
Accretion expense     776  
Balance, May 31, 2020     32,255