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Allowance for Doubtful Accounts (Tables)
3 Months Ended
Mar. 31, 2022
Receivables [Abstract]  
Schedule of Activity Related to the Allowance for Doubtful Accounts
The activity related to the allowance for doubtful accounts was as follows:
Three months ended March 31,
(in thousands)20222021
Balance at beginning of period$5,980 $7,698 
Bad debt expense (recovery)922 (445)
Amount of receivables written off(44)(144)
Foreign currency translation and other(72)(32)
Balance at end of period$6,786 $7,077