Fair Value of Financial Measurements - Carrying Value (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Liabilities:
Contingent consideration	$ 54,110	$ 54,967
Recurring
Other assets
Marketable securities - restricted (SERP)	539	496
Total assets at fair value	189,673	555,726
Liabilities:
Contingent consideration	54,110	54,967
Total liabilities at fair value	54,110	54,967
Recurring \| Corporate and municipal debt securities
Marketable securities
Corporate and municipal debt securities	126,950	368,214
Long-term marketable securities
Corporate and municipal debt securities	37,478	93,896
Recurring \| Cash
Cash and cash equivalents
Cash, Restricted Cash and Money market funds	23,598	52,181
Recurring \| Money market securities and funds
Cash and cash equivalents
Cash, Restricted Cash and Money market funds	1,108	40,939
Recurring \| Level 1
Other assets
Marketable securities - restricted (SERP)	13	11
Total assets at fair value	24,719	93,131
Liabilities:
Contingent consideration	0	0
Total liabilities at fair value	0	0
Recurring \| Level 1 \| Corporate and municipal debt securities
Marketable securities
Corporate and municipal debt securities	0	0
Long-term marketable securities
Corporate and municipal debt securities	0	0
Recurring \| Level 1 \| Cash
Cash and cash equivalents
Cash, Restricted Cash and Money market funds	23,598	52,181
Recurring \| Level 1 \| Money market securities and funds
Cash and cash equivalents
Cash, Restricted Cash and Money market funds	1,108	40,939
Recurring \| Level 2
Other assets
Marketable securities - restricted (SERP)	526	485
Total assets at fair value	164,954	462,595
Liabilities:
Contingent consideration	0	0
Total liabilities at fair value	0	0
Recurring \| Level 2 \| Corporate and municipal debt securities
Marketable securities
Corporate and municipal debt securities	126,950	368,214
Long-term marketable securities
Corporate and municipal debt securities	37,478	93,896
Recurring \| Level 2 \| Cash
Cash and cash equivalents
Cash, Restricted Cash and Money market funds	0	0
Recurring \| Level 2 \| Money market securities and funds
Cash and cash equivalents
Cash, Restricted Cash and Money market funds	0	0
Recurring \| Level 3
Other assets
Marketable securities - restricted (SERP)	0	0
Total assets at fair value	0	0
Liabilities:
Contingent consideration	54,110	54,967
Total liabilities at fair value	54,110	54,967
Recurring \| Level 3 \| Corporate and municipal debt securities
Marketable securities
Corporate and municipal debt securities	0	0
Long-term marketable securities
Corporate and municipal debt securities	0	0
Recurring \| Level 3 \| Cash
Cash and cash equivalents
Cash, Restricted Cash and Money market funds	0	0
Recurring \| Level 3 \| Money market securities and funds
Cash and cash equivalents
Cash, Restricted Cash and Money market funds	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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