Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following tables summarizes the Company's financial assets measured at fair value on a recurring basis:

	December 31, 2021
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents:
Deposits held with banks	$	214,702	$	—	$	—	$	214,702
Short-term highly liquid investments	17,198		—		—		17,198
Investments	206,724		27,454				234,178
Total	$	438,624	$	27,454	$	—	$	466,078

	December 31, 2020
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents:
Deposits held with banks	$	130,807	$	—	$	—	$	130,807
Short-term highly liquid investments	141,543		—		—		141,543
Investments	69,746		80,613		—		150,359
Total	$	342,096	$	80,613	$	—	$	422,709

Refer to Note 4, “Investments,” for the carrying amount and related unrealized gains (losses) by type of investment.