SEGMENT AND GEOGRAPHIC DISCLOSURES - Geographic Breakdown of Revenues and Total Long-Lived Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues from External Customers [Line Items]
Total Revenues	$ 218,576	$ 194,618
Total Long-lived Assets	307,770	334,981
United States
Revenues from External Customers [Line Items]
Total Revenues	151,679	141,832
Total Long-lived Assets	264,946	289,790
Canada
Revenues from External Customers [Line Items]
Total Revenues	20,319	16,494
Total Long-lived Assets	10,238	9,804
Europe
Revenues from External Customers [Line Items]
Total Revenues	24,123	25,711
Total Long-lived Assets	21,261	26,253
Other foreign countries
Revenues from External Customers [Line Items]
Total Revenues	22,455	10,581
Total Long-lived Assets	$ 11,325	$ 9,134