Other Income (Expenses) (Tables)

12 Months Ended

Dec. 31, 2021

Other Income and Expenses [Abstract]

Principal components of other income (expense), net

The principal components of other (expense) income, net are as follows (in thousands):

    

	Year Ended December 31,
	2021		2020		2019
Interest and investment income	$	324	$	436	$	696
Income tax (expense) benefit	(738)		9		(819)
Other non-operating (expense) income	(4)		2		1
Total other (expense) income	$	(418)	$	447	$	(122)