Leases (Assets Recorded Under Capital Leases) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Cost	$ 46,928,000	$ 44,831,000
Accumulated depreciation	(24,690,000)	(19,182,000)
Net book value	22,238,000	25,649,000
Auto Equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	16,380,000	13,207,000
Accumulated depreciation	(6,279,000)	(3,439,000)
Net book value	10,101,000	9,768,000
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	13,920,000	16,597,000
Accumulated depreciation	(7,728,000)	(8,317,000)
Net book value	6,192,000	8,280,000
Yard And Other [Member]
Property, Plant and Equipment [Line Items]
Cost	16,628,000	15,027,000
Accumulated depreciation	(10,683,000)	(7,426,000)
Net book value	$ 5,945,000	$ 7,601,000