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GOODWILL (Tables)
 12 Months Ended
Dec. 31, 2019
Intangible Assets [Abstract]  
Schedule of changes in goodwill
Intangible assets with finite lives are carried at cost less accumulated amortization and accumulated impairment losses. Amortization is recognized using the straight-line method over their estimated useful lives as follows:
 
Years
Distribution rights and customer contracts
6 to 15
Customer lists, license agreements and software
2 to 20
Patents and trademarks being amortized
2 to 13
Non-compete agreements
3 to 10
The following table outlines the changes in goodwill during the period:
 
Total
 
$
Balance as of December 31, 2017
41,690

Acquired through business acquisitions (1)
69,136

Foreign exchange
(3,112
)
Balance as of December 31, 2018
107,714

Foreign exchange
(37
)
Balance as of December 31, 2019
107,677

(1) 
Refer to Note 19 for additional information regarding business combinations.