Fair Value Measurements (Assets and Liabilities Measured at Fair Value) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Assets
Total assets	$ 767,085	$ 839,574
Liabilities
Term debt	15,734	16,031
Total liabilities	15,734	16,031
Commercial paper
Assets
Short-term investments	397,022	363,991
Corporate bonds
Assets
Short-term investments	76,530	65,022
U.S. Treasury and agency obligations
Assets
Short-term investments	71,432	39,611
Term deposits
Assets
Short-term investments		10,113
Interest rate swap
Assets
Long-term investments and other assets	83	198
Term deposits
Assets
Short-term investments	3,009
Money market fund deposits
Assets
Cash equivalents	117,102	195,654
Commercial paper
Assets
Cash equivalents	74,846	94,661
Term deposits
Assets
Cash equivalents	27,061	68,827
Corporate bonds
Assets
Cash equivalents		1,497
Level 1
Assets
Total assets	117,102	195,654
Liabilities
Term debt	0	0
Total liabilities	0	0
Level 1 \| Commercial paper
Assets
Short-term investments	0	0
Level 1 \| Corporate bonds
Assets
Short-term investments	0	0
Level 1 \| U.S. Treasury and agency obligations
Assets
Short-term investments	0	0
Level 1 \| Term deposits
Assets
Short-term investments		0
Level 1 \| Interest rate swap
Assets
Long-term investments and other assets	0	0
Level 1 \| Term deposits
Assets
Short-term investments	0
Level 1 \| Money market fund deposits
Assets
Cash equivalents	117,102	195,654
Level 1 \| Commercial paper
Assets
Cash equivalents	0	0
Level 1 \| Term deposits
Assets
Cash equivalents	0	0
Level 1 \| Corporate bonds
Assets
Cash equivalents		0
Level 2
Assets
Total assets	649,983	643,920
Liabilities
Term debt	15,734	16,031
Total liabilities	15,734	16,031
Level 2 \| Commercial paper
Assets
Short-term investments	397,022	363,991
Level 2 \| Corporate bonds
Assets
Short-term investments	76,530	65,022
Level 2 \| U.S. Treasury and agency obligations
Assets
Short-term investments	71,432	39,611
Level 2 \| Term deposits
Assets
Short-term investments		10,113
Level 2 \| Interest rate swap
Assets
Long-term investments and other assets	83	198
Level 2 \| Term deposits
Assets
Short-term investments	3,009
Level 2 \| Money market fund deposits
Assets
Cash equivalents	0	0
Level 2 \| Commercial paper
Assets
Cash equivalents	74,846	94,661
Level 2 \| Term deposits
Assets
Cash equivalents	27,061	68,827
Level 2 \| Corporate bonds
Assets
Cash equivalents		1,497
Level 3
Assets
Total assets	0	0
Liabilities
Term debt	0	0
Total liabilities	0	0
Level 3 \| Commercial paper
Assets
Short-term investments	0	0
Level 3 \| Corporate bonds
Assets
Short-term investments	0	0
Level 3 \| U.S. Treasury and agency obligations
Assets
Short-term investments	0	0
Level 3 \| Term deposits
Assets
Short-term investments		0
Level 3 \| Interest rate swap
Assets
Long-term investments and other assets	0	0
Level 3 \| Term deposits
Assets
Short-term investments	0
Level 3 \| Money market fund deposits
Assets
Cash equivalents	0	0
Level 3 \| Commercial paper
Assets
Cash equivalents	0	0
Level 3 \| Term deposits
Assets
Cash equivalents	$ 0	0
Level 3 \| Corporate bonds
Assets
Cash equivalents		$ 0

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