FAIR VALUE MEASUREMENTS (Schedule of Estimated Fair Values of Financial Assets and Liabilities Not Measured at Fair Value on a Recurring Basis) (Details) - Recurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Balance
Financial Assets:
Cash equivalents:	$ 273,330	$ 312,321
Financial Liabilities:
Short-term debt		2,861
Other long-term debt		2,693
Deferred consideration for asset acquisition	46,954
Balance | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	60,739	60,336
Financial Liabilities:
Deferred consideration for asset acquisition		53,636
Balance | Money market funds
Financial Assets:
Cash equivalents:	168,120	312,321
Balance | Time deposits included in Short-term investments
Financial Assets:
Cash equivalents:	105,210
Balance | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	25,000	25,000
Estimated Fair Value
Financial Assets:
Cash equivalents:	273,330	312,321
Financial Liabilities:
Short-term debt		2,861
Other long-term debt		2,693
Deferred consideration for asset acquisition	46,954
Estimated Fair Value | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	60,739	60,336
Financial Liabilities:
Deferred consideration for asset acquisition		53,636
Estimated Fair Value | Money market funds
Financial Assets:
Cash equivalents:	168,120	312,321
Estimated Fair Value | Time deposits included in Short-term investments
Financial Assets:
Cash equivalents:	105,210
Estimated Fair Value | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	25,000	25,000
Estimated Fair Value | Level 1
Financial Assets:
Cash equivalents:	168,120	312,321
Financial Liabilities:
Short-term debt		0
Other long-term debt		0
Deferred consideration for asset acquisition	0
Estimated Fair Value | Level 1 | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	0	0
Financial Liabilities:
Deferred consideration for asset acquisition		0
Estimated Fair Value | Level 1 | Money market funds
Financial Assets:
Cash equivalents:	168,120	312,321
Estimated Fair Value | Level 1 | Time deposits included in Short-term investments
Financial Assets:
Cash equivalents:	0
Estimated Fair Value | Level 1 | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	0	0
Estimated Fair Value | Level 2
Financial Assets:
Cash equivalents:	105,210	0
Financial Liabilities:
Short-term debt		2,861
Other long-term debt		2,693
Deferred consideration for asset acquisition	46,954
Estimated Fair Value | Level 2 | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	60,739	60,336
Financial Liabilities:
Deferred consideration for asset acquisition		53,636
Estimated Fair Value | Level 2 | Money market funds
Financial Assets:
Cash equivalents:	0	0
Estimated Fair Value | Level 2 | Time deposits included in Short-term investments
Financial Assets:
Cash equivalents:	105,210
Estimated Fair Value | Level 2 | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	25,000	25,000
Estimated Fair Value | Level 3
Financial Assets:
Cash equivalents:	0	0
Financial Liabilities:
Short-term debt		0
Other long-term debt		0
Deferred consideration for asset acquisition	0
Estimated Fair Value | Level 3 | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	0	0
Financial Liabilities:
Deferred consideration for asset acquisition		0
Estimated Fair Value | Level 3 | Money market funds
Financial Assets:
Cash equivalents:	0	0
Estimated Fair Value | Level 3 | Time deposits included in Short-term investments
Financial Assets:
Cash equivalents:	0
Estimated Fair Value | Level 3 | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	$ 0	$ 0