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FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets: |  |
Cash | $ 1,017,562 | $ 860,633
Restricted cash | 35,303 | 35,288
Marketable securities | 46,923 | 26,748
Trade receivables | 72,634 | 36,856
Derivative asset | 987 | 1,243
Deferred consideration | 22,610 | 21,460
Total assets | 1,196,019 | 982,228
Liabilities: |  |
Derivative liabilities |  | (3,881)
Total Liabilities |  | (3,881)
Level 1 |  |
Assets: |  |
Cash | 1,017,562 | 860,633
Restricted cash | 35,303 | 35,288
Marketable securities | 46,923 | 26,748
Trade receivables | 0 | 0
Derivative asset | 0 | 0
Deferred consideration | 0 | 0
Total assets | 1,099,788 | 922,669
Liabilities: |  |
Derivative liabilities |  | 0
Total Liabilities |  | 0
Level 2 |  |
Assets: |  |
Cash | 0 | 0
Restricted cash | 0 | 0
Marketable securities | 0 | 0
Trade receivables | 72,634 | 36,856
Derivative asset | 987 | 1,243
Deferred consideration | 0 | 0
Total assets | 73,621 | 38,099
Liabilities: |  |
Derivative liabilities |  | (3,881)
Total Liabilities |  | (3,881)
Level 3 |  |
Assets: |  |
Cash | 0 | 0
Restricted cash | 0 | 0
Marketable securities | 0 | 0
Trade receivables | 0 | 0
Derivative asset | 0 | 0
Deferred consideration | 22,610 | 21,460
Total assets | $ 22,610 | 21,460
Liabilities: |  |
Derivative liabilities |  | 0
Total Liabilities |  | $ 0

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