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Non-controlling Interests (Components Of Gain (Loss) Attributable To Noncontrolling Interest) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Noncontrolling Interest [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries | $ 14 | $ (79) | [1] | $ (57) | [1]
Australia Country Cinemas, Pty Ltd [Member] |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries | 140 | 126 |  | 143 |
Shadow View Land And Farming, LLC [Member] |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries | (58) | (77) |  | (64) |
Sutton Hill Capital, LLC [Member] |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries | $ (68) | $ (128) |  | $ (136) |
[1] | Certain 2015 and 2014 balances included the restatement impact as a result of a change in accounting principle (see Note 2 - Summary of Significant Accounting Policies - Accounting Changes).

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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591551-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684 + Details
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