Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Marketable securities
Corporate, U.S. government agency and municipal debt securities	$ 371,537	$ 179,820
Long-term marketable securities
Corporate and municipal debt securities	0	16,617
Liabilities:
Contingent consideration	46,984	53,450
Recurring
Other noncurrent assets
Marketable securities - restricted (SERP)	635	568
Total assets at fair value	403,845	272,059
Liabilities:
Contingent consideration	46,984	53,450
Total liabilities at fair value	46,984	53,450
Recurring \| Corporate, U.S. government agency and municipal debt securities
Marketable securities
Corporate, U.S. government agency and municipal debt securities	371,537	179,820
Recurring \| Corporate and municipal debt securities
Long-term marketable securities
Corporate and municipal debt securities		16,617
Recurring \| Cash
Cash and cash equivalents
Cash and Money market funds	31,080	35,957
Recurring \| Money market funds
Cash and cash equivalents
Cash and Money market funds	593	39,097
Recurring \| Level 1
Other noncurrent assets
Marketable securities - restricted (SERP)	19	16
Total assets at fair value	31,692	75,070
Liabilities:
Contingent consideration	0	0
Total liabilities at fair value	0	0
Recurring \| Level 1 \| Corporate, U.S. government agency and municipal debt securities
Marketable securities
Corporate, U.S. government agency and municipal debt securities	0	0
Recurring \| Level 1 \| Corporate and municipal debt securities
Long-term marketable securities
Corporate and municipal debt securities		0
Recurring \| Level 1 \| Cash
Cash and cash equivalents
Cash and Money market funds	31,080	35,957
Recurring \| Level 1 \| Money market funds
Cash and cash equivalents
Cash and Money market funds	593	39,097
Recurring \| Level 2
Other noncurrent assets
Marketable securities - restricted (SERP)	616	552
Total assets at fair value	372,153	196,989
Liabilities:
Contingent consideration	0	0
Total liabilities at fair value	0	0
Recurring \| Level 2 \| Corporate, U.S. government agency and municipal debt securities
Marketable securities
Corporate, U.S. government agency and municipal debt securities	371,537	179,820
Recurring \| Level 2 \| Corporate and municipal debt securities
Long-term marketable securities
Corporate and municipal debt securities		16,617
Recurring \| Level 2 \| Cash
Cash and cash equivalents
Cash and Money market funds	0	0
Recurring \| Level 2 \| Money market funds
Cash and cash equivalents
Cash and Money market funds	0	0
Recurring \| Level 3
Other noncurrent assets
Marketable securities - restricted (SERP)	0	0
Total assets at fair value	0	0
Liabilities:
Contingent consideration	46,984	53,450
Total liabilities at fair value	46,984	53,450
Recurring \| Level 3 \| Corporate, U.S. government agency and municipal debt securities
Marketable securities
Corporate, U.S. government agency and municipal debt securities	0	0
Recurring \| Level 3 \| Corporate and municipal debt securities
Long-term marketable securities
Corporate and municipal debt securities		0
Recurring \| Level 3 \| Cash
Cash and cash equivalents
Cash and Money market funds	0	0
Recurring \| Level 3 \| Money market funds
Cash and cash equivalents
Cash and Money market funds	$ 0	$ 0

Fair value portion of asset recognized for present right to economic benefit.

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