XML 70 R50.htm IDEA: XBRL DOCUMENT v3.8.0.1
Interest expense (Tables)
 12 Months Ended
Dec. 31, 2017
Interest Expense [Abstract]  
Schedule of interest expense
Year ended December 31,
 
2017

 
2016

Interest on capital lease obligations
 
$
3,023

 
$
2,836

Interest on credit facilities
 
1,507

 
1,593

Interest on Series 1 Debentures
 
—

 
977

Interest on Convertible Debentures
 
1,760

 
—

Amortization of deferred financing costs (note 10(c) and note 13(e))
 
797

 
572

Interest on long term debt
 
$
7,087

 
$
5,978

Other interest income
 
(144
)
 
(194
)
 
 
$
6,943

 
$
5,784