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Non-operating (loss) income
 9 Months Ended
Sep. 30, 2019
Non-operating (loss) income, net [Abstract]  
Other Income and Other Expense Disclosure [Text Block] Non-operating Income, Net
The following table presents the components of Non-operating income, net:
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2019
 
2018
 
2019
 
2018
 
(In thousands)
Interest income
$
6,457

 
$
5,823

 
$
21,045

 
$
19,894

Transition services income
3,750

 
—

 
11,850

 
—

Loss on extinguishment of Subordinated Convertible Debentures
—

 
—

 
—

 
(6,554
)
Other, net
291

 
112

 
1,242

 
1,059

Total non-operating income, net
$
10,498

 
$
5,935

 
$
34,137

 
$
14,399


During the three and nine months ended September 30, 2019, the Company recognized $3.8 million and $11.9 million, respectively, of income from the transition services provided to Neustar in connection with the sale of customer contracts of its Security Services business. In the second quarter of 2018, the Company recognized a $6.6 million loss on the extinguishment of the Subordinated Convertible Debentures.