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Financial Instruments (Tables)
 3 Months Ended
Mar. 31, 2020
Fair Value Disclosures [Abstract]  
Schedule of Financial Liabilities Measured at Fair Value on a Recurring Basis
The following tables present information about the Company’s liabilities that are measured at fair value on a recurring basis, and indicate the fair value hierarchy of the valuation techniques used to determine such fair value:
March 31,
2020		Level 1Level 2Level 3
Liabilities
Liability classified stock options$33,899  $—  $—  $33,899  
Liability for contingent consideration (note 13)978  —  —  978  
Total$34,877  $—  $—  $34,877  

December 31,
2019
Level 1
Level 2
Level 3
Liabilities
Liability classified stock options
$45,569  $—  $—  $45,569  
Liability for contingent consideration (note 13)978  978  
Total
$46,547  $—  $—  $46,547  
Schedule of Changes in Fair Value of Liability Classified Stock Options
The following table presents the changes in fair value of the liability classified stock options:
Liability at
beginning of
the period		Reclassification to
liabilities from equity		Increase (decrease) in
fair value of liability
classified stock
options		Exercise of
options		Unrealized foreign
currency
loss (gain)		Liability at end of
the period
Three months ended March 31, 2020$45,569  $110  $(7,317) $(566) $(3,897) $33,899  
Summary of Changes in Fair Value of the Company's Liability for Contingent Consideration
The following table presents the changes in fair value of the Company’s liability for contingent consideration:
Liability at
the beginning
of the period		Increase
(decrease) in
fair value of
liability for
contingent
consideration		Liability at end
of the period
Three months ended March 31, 2020$978  $—  $978