This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (b)(7)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20187-122688

Name:	us-gaap_GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Investments Marketable Equity Securities (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	Jan. 31, 2017	Mar. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Aug. 04, 2014
Schedule of Equity Method Investments [Line Items]
Proceeds from the sale of investments			$ 5,769	$ 0
Gain on investment transaction			$ 10,617	$ 0
tronc
Schedule of Equity Method Investments [Line Items]
tronc common stock retained, shares					381,354
Ownership percentage in common stock					1.50%
Proceeds from the sale of investments	$ 5,000
Gain on investment transaction		$ 5,000