SEGMENT INFORMATION - Revenue by Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 1,685,438	$ 1,467,925	$ 1,326,205
North America
Segment Reporting Information [Line Items]
Revenue	1,602,571	1,395,428	1,249,892
Europe
Segment Reporting Information [Line Items]
Revenue	$ 82,867	$ 72,497	$ 76,313

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details