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Investments - Teekay Tankers - Ship-to-Ship Transfer Business - Summary of Assets Acquired and Liabilities Assumed (Detail) - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended
Jul. 31, 2015
Dec. 31, 2015
Jun. 30, 2016
ASSETS      
Goodwill   $ 168,571 $ 176,631
Ship-to-ship transfer business [Member] | Customer Relationships [Member]      
LIABILITIES      
Acquired finite-lived intangible assets, weighted average useful life     10 years
Ship-to-ship transfer business [Member] | Customer Contracts [Member]      
LIABILITIES      
Acquired finite-lived intangible assets, weighted average useful life     7 years 7 months 6 days
Teekay Tankers [Member] | Ship-to-ship transfer business [Member]      
ASSETS      
Cash, cash equivalents and short-term restricted cash $ 1,292    
Accounts receivable 10,332    
Prepaid expenses and other current assets 3,763    
Vessels and equipment 6,475    
Other assets 143    
Goodwill 8,059    
Total assets acquired 52,564    
LIABILITIES      
Accounts payable (3,650)    
Accrued liabilities (3,276)    
Total liabilities assumed (6,926)    
Net assets acquired 45,638    
Finite-lived intangible assets, gross     $ 22,500
Finite-lived intangible assets, accumulated amortization     3,100
Finite-lived intangible assets, net     $ 19,400
Purchase price of acquisition 47,300    
Teekay Tankers [Member] | Ship-to-ship transfer business [Member] | Preexisting Obligation [Member]      
LIABILITIES      
Purchase price of acquisition   $ 1,400  
Teekay Tankers [Member] | Ship-to-ship transfer business [Member] | Customer Relationships [Member]      
ASSETS      
Intangible assets subject to amortization 17,901    
Teekay Tankers [Member] | Ship-to-ship transfer business [Member] | Customer Contracts [Member]      
ASSETS      
Intangible assets subject to amortization $ 4,599