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Note 22 - Income Tax (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
    Year ended December 31,
      2020       2019  
                 
Combined statutory rate    
26.5
%    
26.5
%
Nondeductible expenses    
1.5
     
3.0
 
Tax effect of flow through entities    
(4.6
)    
(2.0
)
Impact of changes in foreign exchange rates    
0.3
     
(0.1
)
Adjustments to tax liabilities for prior periods    
(0.2
)    
(0.1
)
Effect of changes in enacted tax rate in other jurisdictions    
0.3
     
0.3
 
Changes in liability for unrecognized tax benefits    
0.6
     
-
 
Stock-based compensation    
1.5
     
0.3
 
Foreign, state, and provincial tax rate differential    
(2.3
)    
(1.5
)
Change in valuation allowance    
3.8
     
(0.4
)
Acquisition related costs and contingent consideration    
1.6
     
1.4
 
Withholding taxes and other    
1.8
     
0.4
 
Effective income tax rate    
30.8
%    
27.8
%
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
    Year ended December 31,
      2020       2019  
                 
Canada   $
8,257
    $
10,876
 
United States    
53,111
     
49,884
 
Foreign    
75,167
     
129,838
 
Total   $
136,535
    $
190,598
 
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
    Year ended December 31,
      2020       2019  
                 
Current                
Canada   $
3,309
    $
2,939
 
United States    
19,577
     
15,029
 
Foreign    
32,344
     
41,745
 
     
55,230
     
59,713
 
                 
Deferred                
Canada    
2,154
     
238
 
United States    
(9,765
)    
(520
)
Foreign    
(5,573
)    
(6,418
)
     
(13,184
)    
(6,700
)
                 
Total   $
42,046
    $
53,013
 
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
    As at December 31,
      2020       2019  
                 
Loss carry-forwards and other credits   $
18,314
    $
18,969
 
Expenses not currently deductible    
33,442
     
28,446
 
Revenue not currently taxable    
(14,076
)    
(6,212
)
Stock-based compensation    
526
     
386
 
Investments    
10,696
     
7,870
 
Provision for doubtful accounts    
8,308
     
4,585
 
Financing fees    
(325
)    
(330
)
Net unrealized foreign exchange losses    
560
     
68
 
Depreciation and amortization    
(57,746
)    
(44,577
)
Operating leases    
8,110
     
7,998
 
Less: valuation allowance    
(13,324
)    
(7,801
)
Net deferred tax (liabilities) assets   $
(5,515
)   $
9,402
 
Summary of Operating Loss Carryforwards [Table Text Block]
    Pre-tax loss carry forward   Pre-tax losses not recognized   Pre-tax losses recognized
      2020       2019       2020       2019       2020       2019  
                                                 
Canada   $
5,632
    $
16,525
    $
65
    $
24
    $
5,567
    $
16,501
 
United States    
3,059
     
3,144
     
924
     
922
     
2,135
     
2,222
 
Foreign    
53,997
     
40,006
     
32,091
     
21,476
     
21,906
     
18,530
 
    Pre-tax loss carry forward   Pre-tax losses not recognized   Pre-tax losses recognized
      2020       2019       2020       2019       2020       2019  
                                                 
Canada   $
1,922
    $
1,864
    $
1,922
    $
1,758
    $
-
    $
106
 
United States    
1,698
     
1,698
     
1,698
     
1,698
     
-
     
-
 
Foreign    
6,876
     
6,271
     
6,876
     
6,271
     
-
     
-
 
Summary of Income Tax Contingencies [Table Text Block]
      2020       2019  
                 
Balance, January 1   $
1,468
    $
1,460
 
Gross increases for tax positions of prior periods    
908
     
71
 
Reduction for lapses in applicable statutes of limitations    
(87
)    
(129
)
Foreign currency translation    
55
     
66
 
                 
Balance, December 31   $
2,344
    $
1,468