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Leases (Notes)
 12 Months Ended
Dec. 31, 2019
Leases [Abstract]  
Leases
Leases
The Company has finance and operating leases for heavy equipment, shop facilities, vehicles and office facilities. These leases have lease terms of one to 15 years, with options to extend on certain leases for terms up to 5 years.
a) Lease expenses and (income)
Year ended December 31,
2019

Short-term lease expense
$
36,179

Operating lease expense
4,435

Operating lease income
(3,074
)

During the year ended December 31, 2019, depreciation of equipment under finance leases (formerly capital lease obligations at December 31, 2018) was $26,416 (December 31, 2018 - $25,995).
The Company generates operating lease income from the sublease of certain office facilities.
b) Supplemental balance sheet information
 
December 31,
2019

Net book value of property, plant and equipment under finance leases
$
139,140

Weighted-average remaining lease term (in years):
 
Finance leases
3.1

Operating leases
8.3

Weighted-average discount rate:
 
Finance leases
3.94
%
Operating leases
4.80
%

c) Maturity analysis
The future minimum lease payments and receipts from non-cancellable operating leases as at December 31, 2019 for the periods shown are as follows:
 
Payments
 
Receipts
For the year ending December 31,
Finance Leases

 
Operating Leases

 
Operating leases

2020
$
31,657

 
$
4,714

 
$
3,052

2021
23,151

 
4,679

 
3,052

2022
16,522

 
3,683

 
2,150

2023
8,064

 
2,199

 
999

2024 and thereafter
1,848

 
11,353

 
—

Total minimum lease payments
$
81,242

 
$
26,628

 
$
9,253

Less: amount representing interest
(4,964
)
 
(5,119
)
 


Carrying amount of minimum lease payments
$
76,278

 
$
21,509

 


Less: current portion of leases
(29,206
)
 
(3,799
)
 


 
$
47,072

 
$
17,710

 
Leases
Leases
The Company has finance and operating leases for heavy equipment, shop facilities, vehicles and office facilities. These leases have lease terms of one to 15 years, with options to extend on certain leases for terms up to 5 years.
a) Lease expenses and (income)
Year ended December 31,
2019

Short-term lease expense
$
36,179

Operating lease expense
4,435

Operating lease income
(3,074
)

During the year ended December 31, 2019, depreciation of equipment under finance leases (formerly capital lease obligations at December 31, 2018) was $26,416 (December 31, 2018 - $25,995).
The Company generates operating lease income from the sublease of certain office facilities.
b) Supplemental balance sheet information
 
December 31,
2019

Net book value of property, plant and equipment under finance leases
$
139,140

Weighted-average remaining lease term (in years):
 
Finance leases
3.1

Operating leases
8.3

Weighted-average discount rate:
 
Finance leases
3.94
%
Operating leases
4.80
%

c) Maturity analysis
The future minimum lease payments and receipts from non-cancellable operating leases as at December 31, 2019 for the periods shown are as follows:
 
Payments
 
Receipts
For the year ending December 31,
Finance Leases

 
Operating Leases

 
Operating leases

2020
$
31,657

 
$
4,714

 
$
3,052

2021
23,151

 
4,679

 
3,052

2022
16,522

 
3,683

 
2,150

2023
8,064

 
2,199

 
999

2024 and thereafter
1,848

 
11,353

 
—

Total minimum lease payments
$
81,242

 
$
26,628

 
$
9,253

Less: amount representing interest
(4,964
)
 
(5,119
)
 


Carrying amount of minimum lease payments
$
76,278

 
$
21,509

 


Less: current portion of leases
(29,206
)
 
(3,799
)
 


 
$
47,072

 
$
17,710