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Other Income and Other Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Other income: |  |  |  |
Interest income | $ 127 | $ 103 | $ 422 | $ 849
Miscellaneous | 12 | 2,263 | 127 | 6,665
Total other income | 139 | 2,366 | 549 | 7,514
Other expense: |  |  |  |
Non-operating costs | (2,328) | (1,985) | (6,529) | (6,976)
Investment losses — net | (563) | (118) | (1,708) | (364)
Miscellaneous | (2,647) | (2,090) | (4,196) | (2,045)
Total other expense | (5,538) | (4,193) | (12,433) | (9,385)
Arizona Public Service Company |  |  |  |
Other income: |  |  |  |
Interest income | 32 | 31 | 105 | 585
Gain on disposition of property | (58) | 91 | 627 | 736
Miscellaneous | 676 | 2,491 | 1,267 | 7,275
Total other income | 650 | 2,613 | 1,999 | 8,596
Other expense: |  |  |  |
Non-operating costs | (2,248) | (2,298) | (6,643) | (7,753)
Loss on disposition of property | (327) | (98) | (934) | (565)
Miscellaneous | (1,390) | (830) | (4,191) | (1,439)
Total other expense | $ (3,965) | $ (3,226) | $ (11,768) | $ (9,757)

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- Definition The aggregate amount of other expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating expense recognized during the period. Such amounts may include: (a) unusual costs, (b) loss on foreign exchange transactions, (c) losses on securities (net of profits), and (d) miscellaneous other expense items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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