Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Changes in Allowance for Doubtful Accounts

For the years ended December 31, 2021, 2020 and 2019, changes in the allowance for doubtful accounts were as follows (in thousands):

	2021			2020			2019
Balance at beginning of year	$	274		$	297		$	321
Addition to credit loss expense		121			158			33
Credit loss resulting from acquisitions		216			—			120
Write-offs, net of recoveries of amounts previously reserved		(45	)		(207	)		(179	)
Exchange rate changes		(10	)		26			2
Balance at end of year	$	556		$	274		$	297