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Bank Indebtedness - Additional Information (Detail)
$ in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2022
CAD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CAD ($)
Dec. 31, 2021
USD ($)
Disclosure of detailed information about financial instruments [Line Items]        
Description of interest rate Advances under the $40 million facility are available at the bank’s prime lending rate, U.S. base rate, U.S. LIBOR rate plus applicable margin, or applicable margin for Banker’s Acceptances, or in combination, and under the US$15 million facility at the bank’s prime lending rate.      
Top of range [member] | Secured Demand Letter of Credit [Member]        
Disclosure of detailed information about financial instruments [Line Items]        
Amount of increase (decrease) of the credit facility.   $ 40    
Bottom of range [member] | Secured Demand Letter of Credit [Member]        
Disclosure of detailed information about financial instruments [Line Items]        
Amount of increase (decrease) of the credit facility.   30    
40.0 Million Secured Operating Facilities [Member]        
Disclosure of detailed information about financial instruments [Line Items]        
Line of credit borrowing capacity $ 40,000   $ 40,000  
Line of credit outstanding 0   0  
Letters of credit outstanding 28,000   7,000  
15.0 Million Secured Operating Facilities [Member]        
Disclosure of detailed information about financial instruments [Line Items]        
Line of credit borrowing capacity   15   $ 15
Line of credit outstanding 0   0  
40.0 Million Operating Facilities [member]        
Disclosure of detailed information about financial instruments [Line Items]        
Line of credit borrowing capacity   40   30
Line of credit outstanding $ 0   $ 0  
Letters of credit outstanding   $ 31   $ 3