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Discontinued Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | [1] | Dec. 31, 2016 | [1] | Sep. 30, 2016 | [1] | Jun. 30, 2016 | [1] | Mar. 31, 2016 | [1] | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income from discontinued operations, net of tax |  | $ (30) | $ 30,451 | $ 1,159 | $ 891 | $ 1,588 | $ 1,511 | $ 1,166 | $ 1,011 | $ 32,471 |  | $ 5,276 | $ 4,268
Joplin, Missouri and Victoria, Texas Television Stations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Net operating revenue |  |  |  |  |  |  |  |  |  | 14,238 | [2] | 23,636 | 21,064
Station operating expense | [3] |  |  |  |  |  |  |  |  | 9,757 | [2] | 14,743 | 14,080
Other operating (income) expense |  |  |  |  |  |  |  |  |  | 31 | [2] | (42) | 32
Operating income |  |  |  |  |  |  |  |  |  | 4,450 | [2] | 8,935 | 6,952
Interest expense | [4] |  |  |  |  |  |  |  |  | 21 | [2] | 32 | 33
Other income | [5] |  |  |  |  |  |  |  |  | 0 | [2] | 0 | (417)
Income before income taxes |  |  |  |  |  |  |  |  |  | 4,429 | [2] | 8,903 | 7,336
Pretax gain on the disposal of discontinued operations |  |  |  |  |  |  |  |  |  | 50,842 | [2] | 0 | 0
Total pretax gain on discontinued operations |  |  |  |  |  |  |  |  |  | 55,271 | [2] | 8,903 | 7,336
Income tax expense | [6] |  |  |  |  |  |  |  |  | 22,800 | [2] | 3,627 | 3,068
Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  |  | $ 32,471 | [2] | $ 5,276 | $ 4,268
[1] | Certain prior year amounts and March 31, 2017 quarterly data have been reclassified to conform with current presentation.
[2] | Results of operations for the Television stations are reflected through August 31, 2017. The effective date of the sale was September 1, 2017.
[3] | No depreciation expense was recorded by the Company beginning May 9, 2017, the date the Television segment assets’ were held for sale.
[4] | Interest expense related to the Surtsey debt that is guaranteed by the Television stations. Our affiliate repaid this loan when the television stations were sold on September 1, 2017.
[5] | Other income in 2015 relates to a gain on an insurance claim.
[6] | The effective tax rates on pretax income from discontinued operations were approximately 41%.

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- Definition Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721525-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e957-107759 + Details
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- Definition Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32672-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721525-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721523-107759 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79507043&loc=d3e38679-109324 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e1012-107759 + Details
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