Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Activity related to the allowance for doubtful accounts

The activity related to the allowance for doubtful accounts for the periods presented was as follows:

	Three months ended		Nine months ended
(in thousands)	September 30, 2020		September 30, 2020
Balance at beginning of period	$	7,743	$	5,338
Bad debt expense	113		2,821
Amount of receivables recovered (written off)	(61)		(335)
Foreign currency translation and other	139		110
Balance at end of period	$	7,934	$	7,934