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Capital Stock - Additional Information, Stock-based compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options granted (in shares) 507,000 1,490,000 0
Weighted-average grant-date fair value of options granted (in dollars per share) $ 2.55 $ 1.16 $ 0
Common stock conversion (in shares) 1    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 5 years 6 months 5 years 6 months  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested $ 3,500 $ 100 $ 0
Non-Management Directors | Teekay Tankers      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture $ 300 $ 300 300
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock, shares reserved for issuance upon exercise of options or equity awards granted or to be granted 11,324,227 11,787,597  
Stock options granted (in shares) 506,579 1,489,648  
Stock option, term (in years) 10 years    
Vesting period (in years) 3 years    
Compensation costs $ 1,600 $ 1,100 1,000
Intrinsic value of outstanding in-the-money stock options $ 10,500 $ 3,800  
Weighted-average remaining life (in years) 5 years 6 months 5 years 10 months 24 days  
Weighted-average grant-date fair value of options granted (in dollars per share) $ 2.55 $ 1.16  
Expected volatility used in computing fair value of options granted 41.27% 38.63%  
Dividend yield used in computing fair value of options granted 0.00% 0.00%  
Risk-free interest rate used in computing fair value of options granted 3.83% 3.01%  
Estimated forfeiture rate used in computing fair value of options granted 0.00% 6.00%  
Stock Options | Teekay Tankers      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options granted (in shares) 0    
Stock Options | Nonvested      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average grant date fair value of non-vested options forfeited $ 0 $ 0 $ 45
Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 3 years    
Common stock conversion (in shares) 1    
Number of shares or units granted equity based compensation awards 329,735 787,586 355,944
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture $ 1,900 $ 2,300 $ 1,400
Vested restricted stock (in shares) 651,135 631,706 880,320
Market value of vested restricted stock $ 2,000 $ 2,200 $ 4,700
Stock granted (in shares) 149,217 218,671 222,590
Share based compensation expense $ 2,700 $ 2,900 $ 2,300
Shares Issued, Shares, Share-Based Payment, Arrangement, Vested and Deferred 184,498    
Restricted Stock Units | Teekay Tankers      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years) 3 years    
Restricted Stock Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation costs $ 300 $ 300 $ 600
Number of shares or units granted equity based compensation awards 47,330 95,485 149,366