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Other Expense (Tables)
 6 Months Ended
Jun. 30, 2017
Other Liabilities Disclosure [Abstract]  
Schedule of Other Nonoperating Income (Expense)
The components of other expense are as follows:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2017
 
2016
 
2017
 
2016
 
$
 
$
 
$
 
$
Freight tax provision
(2,944
)
 
 
(2,024
)
 
 
(4,432
)
 
 
(4,502
)
 
Foreign exchange (loss) gain
(3
)
 
 
(62
)
 
 
70

 
 
(317
)
 
Other income
186

 
 
187

 
 
212

 
 
272

 
Total
(2,761
)
 
 
(1,899
)
 
 
(4,150
)
 
 
(4,547
)
 
Schedule of Unrecognized Tax Benefits Roll Forward
The following reflects the changes in the Company’s unrecognized tax benefits, recorded in other long-term liabilities, from December 31, 2016 to June 30, 2017:
 
2017
 
$
Balance of unrecognized tax benefits as at January 1
12,882

 
    Increases for positions related to the current period
3,387

 
    Changes for positions taken in prior periods
993

 
    Decreases related to statute of limitations
(201
)
 
Balance of unrecognized tax benefits as at June 30
17,061