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Non-operating income, net | 12 Months Ended
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Dec. 31, 2018
Non-operating (loss) income, net [Abstract] |
Non-operating Income, Net | Non-operating Income, Net The following table presents the components of Non-operating income, net:
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
| (In thousands)
Gain on sale of business | $ | 54,840 |  |  | $ | 10,421 |  |  | $ | — |
Interest income | 26,490 |  |  | 17,944 |  |  | 6,191 |
Loss on extinguishment of Subordinated Convertible Debentures | (6,554 | ) |  | — |  |  | — |
Other, net | 2,193 |  |  | (739 | ) |  | 3,974 |
Total non-operating income, net | $ | 76,969 |  |  | $ | 27,626 |  |  | $ | 10,165 |
On December 5, 2018, the Company completed the sale of the rights, economic benefits, and obligations, in all customer contracts related to its Security Services business, which resulted in a gain of approximately $54.8 million in the fourth quarter of 2018. During the second quarter of 2017, the Company completed the sale of its iDefense business, which resulted in a gain of approximately $10.4 million in 2017. Interest income is earned principally from the Company’s surplus cash balances and marketable securities.

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -URI http://asc.fasb.org/topic&trid=2122503 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 610 -URI http://asc.fasb.org/topic&trid=49130413 + Details
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- Definition Non-operating (loss) income, net [Abstract] + References No definition available. + Details
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