Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

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

The following tables present the financial assets measured at fair value on a recurring basis:

	September 30, 2021
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents:
Deposits held with banks	$	35,070	$	—	$	—	$	35,070
Short-term highly liquid investments	19,417		3,100		—		22,517
Investments	197,734		31,079		—		228,813
Total	$	252,221	$	34,179	$	—	$	286,400

	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