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Other Non-Operating Income (Tables)
 6 Months Ended
Jun. 30, 2022
Other Nonoperating Income (Expense) [Abstract]  
Summary of other non-operating income
A summary of non-operating income is as follows:

Three Months Ended 
 June 30

Six Months Ended 
 June 30
(in thousands)
2022202120222021
Gain on sale of businesses$753 $644 $1,698 $1,446 
Foreign currency (loss) gain, net(478)677 (1,525)680 
(Loss) gain on sale of cost method investments(51)6,699 1,024 6,793 
Gain on sale of investment in affiliate
— — 604 — 
Gain on cost method investments
— 7,783 — 10,506 
Other gain, net
952 319 2,251 3,017 
Total Other Non-Operating Income
$1,176 $16,122 $4,052 $22,442