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Other Income and Other Expense | 9 Months Ended
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Sep. 30, 2017
Component of Other Income and Other Expense Nonoperating [Line Items] |
Other Income and Other Expense | Other Income and Other Expense The following table provides detail of Pinnacle West's Consolidated other income and other expense for the three and nine months ended September 30, 2017 and 2016 (dollars in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Other income: |  |  |  |  |  |  |  |  |  |  |
Interest income | $ | 917 |  |  | $ | 65 |  |  | $ | 1,782 |  |  | $ | 370 |
Investment gains — net | 119 |  |  | — |  |  | 119 |  |  | 13 |
Miscellaneous | 55 |  |  | 6 |  |  | 154 |  |  | 2 |
Total other income | $ | 1,091 |  |  | $ | 71 |  |  | $ | 2,055 |  |  | $ | 385 |
Other expense: |  |  |  |  |  |  |  |  |  |  |
Non-operating costs | $ | (1,978 | ) |  | $ | (2,502 | ) |  | $ | (7,338 | ) |  | $ | (6,636 | )
Investment losses — net | (231 | ) |  | (450 | ) |  | (759 | ) |  | (1,508 | )
Miscellaneous | (2,784 | ) |  | (2,253 | ) |  | (4,398 | ) |  | (3,941 | )
Total other expense | $ | (4,993 | ) |  | $ | (5,205 | ) |  | $ | (12,495 | ) |  | $ | (12,085 | )
Arizona Public Service Company |
Component of Other Income and Other Expense Nonoperating [Line Items] |
Other Income and Other Expense | The following table provides detail of APS’s other income and other expense for the three and nine months ended September 30, 2017 and 2016 (dollars in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Other income: |  |  |  |  |  |  |  |  |  |  |
Interest income | $ | 683 |  |  | $ | — |  |  | $ | 1,278 |  |  | $ | 181 |
Gain on disposition of property | 441 |  |  | 183 |  |  | 1,009 |  |  | 5,504 |
Miscellaneous | 354 |  |  | 384 |  |  | 1,395 |  |  | 1,239 |
Total other income | $ | 1,478 |  |  | $ | 567 |  |  | $ | 3,682 |  |  | $ | 6,924 |
Other expense: |  |  |  |  |  |  |  |  |  |  |
Non-operating costs (a) | $ | (1,970 | ) |  | $ | (2,714 | ) |  | $ | (7,889 | ) |  | $ | (7,398 | )
Loss on disposition of property | (3,214 | ) |  | 36 |  |  | (4,471 | ) |  | (1,048 | )
Miscellaneous | (1,078 | ) |  | (1,098 | ) |  | (3,930 | ) |  | (4,510 | )
Total other expense | $ | (6,262 | ) |  | $ | (3,776 | ) |  | $ | (16,290 | ) |  | $ | (12,956 | )
(a) As defined by FERC, includes below-the-line non-operating utility expense (items excluded from utility rate recovery).

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -URI http://asc.fasb.org/topic&trid=2122503 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 610 -URI http://asc.fasb.org/topic&trid=49130413 + Details
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