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Other assets (Tables)
 12 Months Ended
Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Assets
Other assets consist of the following:
 
2018
 
2017
Income tax recoverable
$
1,961

 
$
5,967

Deferred financing costs
4,449

 
3,546

Restricted cash
18,954

 
15,939

Other
9,335

 
10,811

 
34,699

 
36,263

Less: current portion
(6,115
)
 
(7,110
)
 
$
28,584

 
$
29,153