Note 8 - Leases (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Lease, Cost [Table Text Block]

	Year ended December 31,
	2021			2020
Operating lease cost	$	90,129		$	82,643
Finance lease cost
Amortization of right-of-use assets		975			898
Interest on lease liabilities		16			17
Variable lease cost		24,008			25,297
Short term lease cost		4,024			3,662
Total lease expense	$	119,152		$	112,517
Sublease revenues		(6,214	)		(2,844	)
Total lease cost, net of sublease revenues	$	112,938		$	109,673

	Year ended December 31,
	2021			2020
Right-of-use assets obtained in exchange for new operating lease obligations	$	111,578		$	91,575
Right-of-use assets obtained in exchange for new finance lease obligations		400			2,160
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	(94,256	)	$	(83,351	)
Operating cash flows from finance leases		(16	)		(17	)
Financing cash flows from finance leases		1,936			(884	)

	As at December 31,
	2021
Weighted average remaining lease term
Operating leases (years)		6.9
Finance leases (years)		1.6
Weighted average discount rate
Operating leases		3.0	%
Finance leases		1.6	%

Lessee, Leases Balance Sheet Infomration [Table Text Block]

	As at December 31,
	2021			2020
Operating leases
Operating lease right-of-use assets	$	316,517		$	288,134
Operating lease liabilities - current	$	(80,928	)	$	(78,923	)
Operating lease liabilities - non-current		(296,633	)		(251,680	)
Total operating lease liabilities	$	(377,561	)	$	(330,603	)
Finance leases
Fixed assets, cost	$	3,312		$	4,662
Accumulated depreciation		(2,564	)		(2,327	)
Fixed assets, net	$	748		$	2,335
Long-term debt - current	$	(562	)	$	(1,113	)
Long-term debt - non-current		(248	)		(1,316	)
Total finance lease liabilities	$	(810	)	$	(2,429	)

Lessee, Lease, Liability, Maturity [Table Text Block]

	One		Two		Three		Four		Five
	year		years		years		years		years		Thereafter		Total
Operating leases	$	91,217	$	76,315	$	60,221	$	46,449	$	32,920	$	112,720	$	419,842
Present value of operating lease liabilities														377,561
Difference between undiscounted cash flows and discounted cash flows													$	42,281
Finance leases	$	589	$	184	$	45	$	-	$	-	$	-	$	818
Present value of finance lease liabilities														810
Difference between undiscounted cash flows and discounted cash flows													$	8