ACQUISITIONS - Assets and Liabilities Acquired (Details) - USD ($) $ in Thousands	Sep. 04, 2019	Dec. 31, 2021	Dec. 31, 2020
ASSETS ACQUIRED
Goodwill		$ 455,206	$ 455,206
Cannes
ASSETS ACQUIRED
Cash	$ 21,459
Accounts receivable	37,657
Inventories, net	1,633
Prepaid expenses and other current assets	8,100
Restricted cash	8,423
Property and equipment, net	17,588
Other assets, net	1,149
Total identifiable assets acquired	96,009
Total fair value of intangible assets acquired	264,100
Goodwill	455,206
Total Assets Acquired	815,315
LIABILITIES ASSUMED
Accounts payable	6,123
Deferred revenue	3,879
Accrued expenses	25,203
Capital lease obligations	595
Deferred taxes, net	29,795
Contingent consideration from prior acquisitions	40,371
Other long-term liabilities	7,286
Total Liabilities Assumed	113,252
Total consideration	702,063
Cannes | Previously Reported
ASSETS ACQUIRED
Cash	21,459
Accounts receivable	37,657
Inventories, net	1,633
Prepaid expenses and other current assets	8,100
Restricted cash	8,423
Property and equipment, net	17,588
Other assets, net	1,149
Total identifiable assets acquired	96,009
Total fair value of intangible assets acquired	264,100
Goodwill	455,006		$ 455,200
Total Assets Acquired	815,115
LIABILITIES ASSUMED
Accounts payable	6,123
Deferred revenue	3,879
Accrued expenses	25,203
Capital lease obligations	595
Deferred taxes, net	29,595
Contingent consideration from prior acquisitions	40,371
Other long-term liabilities	7,286
Total Liabilities Assumed	113,052
Total consideration	702,063
Cannes | Revision of Prior Period, Adjustment
ASSETS ACQUIRED
Cash	0
Accounts receivable	0
Inventories, net	0
Prepaid expenses and other current assets	0
Restricted cash	0
Property and equipment, net	0
Other assets, net	0
Total identifiable assets acquired	0
Total fair value of intangible assets acquired	0
Goodwill	200
Total Assets Acquired	200
LIABILITIES ASSUMED
Accounts payable	0
Deferred revenue	0
Accrued expenses
Capital lease obligations	0
Deferred taxes, net	200
Contingent consideration from prior acquisitions	0
Other long-term liabilities	0
Total Liabilities Assumed	200
Total consideration	0
Cannes | Trade names
ASSETS ACQUIRED
Total fair value of intangible assets acquired	27,300
Cannes | Trade names | Previously Reported
ASSETS ACQUIRED
Total fair value of intangible assets acquired	27,300
Cannes | Trade names | Revision of Prior Period, Adjustment
ASSETS ACQUIRED
Total fair value of intangible assets acquired	0
Cannes | Customer relationships
ASSETS ACQUIRED
Total fair value of intangible assets acquired	189,000
Cannes | Customer relationships | Previously Reported
ASSETS ACQUIRED
Total fair value of intangible assets acquired	189,000
Cannes | Customer relationships | Revision of Prior Period, Adjustment
ASSETS ACQUIRED
Total fair value of intangible assets acquired	0
Cannes | Technology
ASSETS ACQUIRED
Total fair value of intangible assets acquired	47,800
Cannes | Technology | Previously Reported
ASSETS ACQUIRED
Total fair value of intangible assets acquired	47,800
Cannes | Technology | Revision of Prior Period, Adjustment
ASSETS ACQUIRED
Total fair value of intangible assets acquired	$ 0