Represents the amortization period of goodwill recognized and expected to be deductible for tax purposes.

No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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BUSINESS COMBINATIONS - Additional Information (Details) $ in Thousands, $ in Millions	Oct. 31, 2020 USD ($)	Jan. 28, 2020 USD ($)	Aug. 01, 2019 USD ($)	Aug. 01, 2019 CAD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Nov. 01, 2019 USD ($)
Acquisition
Goodwill					$ 413,126	$ 413,037	$ 766,980
Field & Industrial Services
Acquisition
Goodwill					237,368	237,341	298,579
Environmental Services
Acquisition
Goodwill					166,925	$ 166,863	$ 166,415
NRC
Acquisition
Acquisition price	$ 1,024,833
Goodwill	577,398				$ 577,400			$ 577,400
Identifiable intangible assets	309,500
Property and equipment	$ 170,208
NRC \| Field & Industrial Services
Acquisition
Goodwill								177,900
NRC \| Environmental Services
Acquisition
Goodwill								$ 399,500
US Ecology Sarnia
Acquisition
Percentage of outstanding shares acquired			100.00%
Acquisition price			$ 17,900	$ 23.5
Goodwill			7,700
Identifiable intangible assets			$ 6,200
Weighted average amortization period			14 years	14 years
ES&H Dallas
Acquisition
Goodwill			$ 7,700
Impact Environmental Services Inc
Acquisition
Acquisition price		$ 3,300
Goodwill		300
Identifiable intangible assets		$ 900
Weighted average amortization period		12 years
Amortization period of goodwill recognized and expected to be deductible for income tax purposes		15 years