Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of expense charged against earnings to allocate the cost of tangible and intangible assets over their remaining economic lives, classified as other.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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PROPERTY AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property and equipment, net
Property and equipment, gross	$ 519,410	$ 506,074
Less: accumulated depreciation and amortization	(204,754)	(207,434)
Property and equipment, net	314,656	298,640
Total depreciation and amortization expense	49,300	49,100	$ 45,000
Land
Property and equipment, net
Property and equipment, gross	85,876	78,275
Leasehold improvements
Property and equipment, net
Property and equipment, gross	11,524	10,417
Furniture and fixtures
Property and equipment, net
Property and equipment, gross	8,271	8,426
Office and computer equipment
Property and equipment, net
Property and equipment, gross	21,657	22,766
Computer software
Property and equipment, net
Property and equipment, gross	6,945	4,450
Equipment
Property and equipment, net
Property and equipment, gross	185,348	214,293
Buildings
Property and equipment, net
Property and equipment, gross	156,616	126,338
Vehicles
Property and equipment, net
Property and equipment, gross	$ 43,173	$ 41,109