v3.8.0.1

Earnings Per Share - Additional Information (Detail) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 31, 2017 | Aug. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Net income |  |  | $ 67,823 | $ 183,626 | $ 68,906
Class A [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Anti-dilutive effect on calculation of diluted earnings per common share attributable to outstanding stock-based awards (in shares) |  |  | 14,000 | 0 | 0
Class A [Member] | Employee Stock Option [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Anti-dilutive effect on calculation of diluted earnings per common share attributable to outstanding stock-based awards (in shares) |  |  | 700,000 | 44,000 | 100,000
Entities Under Common Control [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Net income |  |  | $ 4,968 | $ 6,699 | $ 11,764
Entities Under Common Control [Member] | SPT Explorer LLC And Navigator Spirit LLC [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Net income |  |  | 0 | 2,708 | 3,396
Parent Company [Member] | Entities Under Common Control [Member] | Teekay Tanker Operations Ltd [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Net income |  |  | $ 5,000 | $ 4,000 | $ 8,400
Business Acquisition, Percentage of Voting Interests Acquired |  | 50.00% |  |  |
Parent Company [Member] | Entities Under Common Control [Member] | Teekay Tanker Operations Ltd [Member] | Class B [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 4,220,945 |  |  |
Subsequent Event [Member] | Parent Company [Member] | Entities Under Common Control [Member] | Teekay Tanker Operations Ltd [Member] | Class B [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 13,800,000 |  |  |  |
Teekay Tanker Operations Ltd [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 4,220,945 |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 50.00% |  |  | 50.00%
Teekay Tanker Operations Ltd [Member] | Parent Company [Member] | Class B [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 50.00% |  |  |
Teekay Tanker Operations Ltd [Member] | Subsequent Event [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired | 50.00% |  |  |  |

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