Goodwill (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Value of Goodwill

The changes in the carrying value of goodwill were as follows (in thousands):

	Amount
Balance as of December 31, 2018	$	113,208
Acquisition of Sualab Co., Ltd.	130,142
Foreign exchange rate changes	95
Balance as of December 31, 2019	243,445
Sualab Co., Ltd. purchase price adjustment	(1,004)
Foreign exchange rate changes	1,637
Balance as of December 31, 2020	$	244,078