Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2020

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of accumulated other comprehensive income (loss)

The following table reflects the changes in accumulated other comprehensive income (loss), net of tax:

	Unrealized Gain (Losses) on Available-for-Sale Debt Investments (1)		Defined Benefit Pension (2)		Foreign Currency Translation		Total
	(In thousands)
Balance at December 31, 2018	$	—	$	2,659	$	21,153	$	23,812
Other comprehensive income (loss) before reclassifications	—		(6,890)		2,782		(4,108)
Amounts reclassified from accumulated other comprehensive income (loss)	—		(589)		—		(589)
Other comprehensive income (loss)	—		(7,479)		2,782		(4,697)
Balance at December 31, 2019	$	—	$	(4,820)	$	23,935	$	19,115
Other comprehensive income (loss) before reclassifications	17		394		7,532		7,943
Amounts reclassified from accumulated other comprehensive income (loss)	4		208		—		212
Other comprehensive income (loss)	21		602		7,532		8,155
Balance at December 31, 2020	$	21	$	(4,218)	$	31,467	$	27,270