Fair Value (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value [Abstract]

Assets Measured at Fair Value on a Recurring Basis

The following tables present the fair value hierarchy for those assets and liabilities measured at fair value on a recurring basis (U.S. dollars in thousands):

	Fair Value at March 31, 2020
	Level 1		Level 2		Level 3		Total
Financial assets:
Cash equivalents and current investments	$	49,670	$	—	$	—	$	49,670
Other long-term assets		202		—		—		202
Life insurance contracts		—		—		35,339		35,339
Total	$	49,872	$	—	$	35,339	$	85,211

	Fair Value at December 31, 2019
	Level 1		Level 2		Level 3		Total
Financial assets:
Cash equivalents and current investments	$	54,642	$	—	$	—	$	54,642
Other long-term assets		3,216		—		—		3,216
Life insurance contracts		—		—		41,707		41,707
Total	$	57,858	$	—	$	41,707	$	99,565

Changes in Fair Value of Level 3 Marketable Securities

The following table provides a summary of changes in fair value of the Company’s Level 3 marketable securities (U.S. dollars in thousands):

Beginning balance at January 1, 2020	$	41,707
Actual return on plan assets		(6,368	)
Purchase and issuances		—
Sales and settlements		—
Transfers into Level 3		—
Ending balance at March 31, 2020	$	35,339