FAIR VALUE MEASUREMENTS (Schedule of Estimated Fair Values of Financial Assets and Liabilities Not Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Financial Liabilities:
Short-term debt	$ 2,861	$ 16,018
Recurring | Balance
Financial Assets:
Cash equivalents:	312,321	78,302
Restricted cash	2,292	2,722
Employee loans		818
Financial Liabilities:
Short-term debt	2,861	16,018
Other long-term debt	2,693	5,234
Deferred consideration for asset acquisition	53,636
Recurring | Balance | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	60,336
Recurring | Balance | Money market funds
Financial Assets:
Cash equivalents:	312,321	78,302
Recurring | Balance | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	25,000	25,000
Recurring | Estimated Fair Value
Financial Assets:
Cash equivalents:	312,321	78,302
Restricted cash	2,292	2,722
Employee loans		818
Financial Liabilities:
Short-term debt	2,861	16,018
Other long-term debt	2,693	5,234
Deferred consideration for asset acquisition	53,636
Recurring | Estimated Fair Value | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	60,336
Recurring | Estimated Fair Value | Money market funds
Financial Assets:
Cash equivalents:	312,321	78,302
Recurring | Estimated Fair Value | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	25,000	25,000
Recurring | Estimated Fair Value | Level 1
Financial Assets:
Cash equivalents:	312,321	78,302
Restricted cash	2,292	2,722
Employee loans		0
Financial Liabilities:
Short-term debt	0	0
Other long-term debt	0	0
Deferred consideration for asset acquisition	0
Recurring | Estimated Fair Value | Level 1 | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	0
Recurring | Estimated Fair Value | Level 1 | Money market funds
Financial Assets:
Cash equivalents:	312,321	78,302
Recurring | Estimated Fair Value | Level 1 | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	0	0
Recurring | Estimated Fair Value | Level 2
Financial Assets:
Cash equivalents:	0	0
Restricted cash	0	0
Employee loans		0
Financial Liabilities:
Short-term debt	2,861	16,018
Other long-term debt	2,693	5,234
Deferred consideration for asset acquisition	53,636
Recurring | Estimated Fair Value | Level 2 | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	60,336
Recurring | Estimated Fair Value | Level 2 | Money market funds
Financial Assets:
Cash equivalents:	0	0
Recurring | Estimated Fair Value | Level 2 | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	25,000	25,000
Recurring | Estimated Fair Value | Level 3
Financial Assets:
Cash equivalents:	0	0
Restricted cash	0	0
Employee loans		818
Financial Liabilities:
Short-term debt	0	0
Other long-term debt	0	0
Deferred consideration for asset acquisition	0
Recurring | Estimated Fair Value | Level 3 | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	0
Recurring | Estimated Fair Value | Level 3 | Money market funds
Financial Assets:
Cash equivalents:	0	0
Recurring | Estimated Fair Value | Level 3 | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	$ 0	$ 0