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Interest expense net (Tables)
 12 Months Ended
Dec. 31, 2019
Interest Expense [Abstract]  
Schedule of interest expense
Year ended December 31,
2019

 
2018

Credit facilities
$
9,826

 
$
2,729

Convertible debentures
4,318

 
2,200

Mortgages
963

 
105

Promissory notes
1,691

 
202

Financing obligations
272

 
—

Finance lease obligations
3,691

 
2,984

Amortization of deferred financing costs
969

 
539

Interest expense
$
21,730

 
$
8,759

Interest income
(107
)
 
(175
)
 
$
21,623

 
$
8,584