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Long term debt (Tables)
 12 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]  
Schedule of long term debt
 
 
December 31, 2017

 
December 31, 2016

Cost
 
$
2,377

 
$
235

Accumulated amortization
 
442

 
98


 
$
1,935

 
$
137

Long term debt amounts are as follows:
Current:
  
 
December 31, 2017

 
December 31, 2016

Credit facilities (note 13(b))
 
$
—

 
$
8,246

Less: deferred financing costs
 
—

 
(77
)
 
 
$
—

 
$
8,169

Long term:
  

December 31, 2017


December 31, 2016

Credit facilities (note 13(b))

$
32,000


$
31,326

Convertible Debentures (note 13(d))

40,000


—

Less: deferred financing costs
 
(1,935
)
 
(60
)
 

$
70,065


$
31,266
Schedule of line of credit facilities
Credit facilities
 
 
December 31, 2017

 
December 31, 2016

Term Loan
 
$
—

 
$
28,572

Revolver
 
32,000

 
11,000

Total credit facilities
 
32,000

 
39,572

Less: current portion
 
—

 
(8,246
)
 
 
$
32,000

 
$
31,326