SEGMENT INFORMATION (Revenues by Customer Location) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 3,758,144	$ 2,659,478	$ 2,293,798
United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	2,125,301	1,523,731	1,321,662
United Kingdom
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	474,941	331,217	290,039
Switzerland
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	271,208	203,391	152,710
Russia
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	155,186	104,846	89,941
Netherlands
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	154,816	114,678	88,488
Germany
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	113,727	84,902	82,441
Canada
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	96,646	68,416	68,304
Other locations
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 366,319	$ 228,297	$ 200,213