Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 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		Six months ended
(in thousands)	June 30, 2020		June 30, 2020
Balance at beginning of period	$	5,782	$	5,338
Bad debt expense	1,792		2,708
Amount of receivables recovered (written off)	12		(274)
Foreign currency translation and other	157		(29)
Balance at end of period	$	7,743	$	7,743