Accounts receivable, net (Tables)

6 Months Ended

Jun. 30, 2021

Receivables [Abstract]

Schedule of allowance for doubtful accounts

The following table presents changes in the allowance for doubtful accounts for the six months ended June 30, 2021 and 2020:

	Six months ended June 30,
In thousands	2021		2020
Beginning balance	$	20,843	$	19,923
Current period provision	681		17,345
Write-offs charged against the allowance	(5,943)		(12,019)
Recoveries of amounts previously written-off	2,296		1,467
Foreign currency	78		(156)
Ending balance	$	17,955	$	26,560