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LEASES (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Components of Lease Expense [Abstract]
Operating lease cost		$ 7,895	$ 7,815	$ 15,624	$ 15,627
Short-term lease cost		361	215	729	509
Variable lease cost		1,628	1,514	3,239	3,046
Total lease cost	[1]	9,884	9,544	19,592	19,182
Supplemental Information Related to Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities		8,258	6,555	16,370	14,345
Right-of-use assets obtained in exchange for new operating lease liabilities		12,976	$ 7,535	20,873	$ 19,075
Future Lease Payments for Operating Leases [Abstract]
2021 (excluding the six months ended June 30, 2021)		15,765		15,765
2022		28,048		28,048
2023		22,301		22,301
2024		15,724		15,724
2025		9,460		9,460
2026 and thereafter		9,374		9,374
Total lease payments		100,672		100,672
Less: imputed interest		5,925		5,925
Total operating lease liabilities		$ 94,747		$ 94,747
Average Lease Terms and Discount Rates [Abstract]
Weighted-average remaining lease term - Operating leases		4 years 1 month 9 days	4 years 2 months 15 days	4 years 1 month 9 days	4 years 2 months 15 days
Weighted-average discount rate - Operating leases		3.00%	3.20%	3.00%	3.20%
Maximum [Member]
Operating Lease [Abstract]
Lease term		5 years		5 years
[1] Sublease income was immaterial

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