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Restructuring and integration expense (Tables)
9 Months Ended
Sep. 30, 2021
Restructuring and Related Activities [Abstract]  
Restructuring and integration expense
Restructuring and integration expense is reflected on the consolidated statements of comprehensive income (loss) as follows:
 Quarter Ended
September 30,
Nine Months Ended
September 30,
(in thousands)2021202020212020
Total cost of revenue$1,559 $(26)$3,073 $831 
Operating expenses12,335 18,949 38,012 56,957 
Restructuring and integration expense$13,894 $18,923 $41,085 $57,788 

Restructuring and integration expense for each period was comprised of the following:
 Quarter Ended
September 30,
Nine Months Ended
September 30,
(in thousands)2021202020212020
External consulting fees$6,432 $14,898 $19,355 $37,136 
Internal labor1,756 2,218 6,276 5,200 
Employee severance benefits1,293 752 3,167 10,870 
Other4,413 1,055 12,287 4,582 
Restructuring and integration expense$13,894 $18,923 $41,085 $57,788 
Changes in restructuring and integration accruals
Changes in our restructuring and integration accruals were as follows:
(in thousands)Employee severance benefits
Balance, December 31, 2020
$6,798 
Charges4,690 
Reversals(1,523)
Payments(8,632)
Balance, September 30, 2021
$1,333