Investments Investments (Tables)

12 Months Ended

Dec. 31, 2020

Investments [Abstract]

Schedule of available-for-sale investments

Available-for-sale investments at the end of 2020 were as follows:

(In thousands)	Adjusted Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Cash equivalents:
Money market funds	$	40,027	$	—	$	—	$	40,027
Time deposits	36,756		—		—		36,756
Commercial paper	61,000		—		—		61,000
Total cash equivalents	137,783		—		—		137,783
Short-term investments:
Time deposits	28,302		—		—		28,302
Commercial paper	264,000		12		(19)		263,993
Government and corporate bonds	149,975		247		(44)		150,178
Total short-term investments	442,277		259		(63)		442,473
Long-term investments:
Government and corporate bonds	136,983		152		(57)		137,078
Total available-for-sale investments	$	717,043	$	411	$	(120)	$	717,334

Available-for-sale investments at the end of 2019 were as follows:

(In thousands)	Adjusted Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Cash equivalents:
Money market funds	$	185,666	$	—	$	—	$	185,666
Time deposits	64,286		—		—		64,286
Total cash equivalents	249,952		—		—		249,952
Short-term investments:
Time deposits	2,506		—		—		2,506
Government and corporate bonds	83,272		52		(11)		83,313
Total short-term investments	85,778		52		(11)		85,819
Long-term investments:
Government and corporate bonds	96,186		91		(67)		96,210
Total available-for-sale investments	$	431,916	$	143	$	(78)	$	431,981