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Note 11 - Fair Value Measurements (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
Note 11 - Fair Value Measurements (Details) [Line Items] |  |  |  |
Marketable Securities | [1] | $ 12,189 |  | $ 90,235
Asset Impairment Charges |  | 27,989 | $ 107,034 | 107,000
Impairment of Real Estate |  | 2,200 |  |
Cost-method Investments, Other than Temporary Impairment |  | 4,800 |  |
Discontinued Operations [Member] |  |  |  |
Note 11 - Fair Value Measurements (Details) [Line Items] |  |  |  |
Asset Impairment Charges |  | 100 |  | 78,600
Fair Value, Estimate Not Practicable, Carrying (Reported) Amount [Member] |  |  |  |
Note 11 - Fair Value Measurements (Details) [Line Items] |  |  |  |
Impairment of Real Estate |  | 21,900 |  | 102,200
Other Real Estate Investments [Member] |  |  |  |
Note 11 - Fair Value Measurements (Details) [Line Items] |  |  |  |
Asset Impairment Charges |  | 5,300 |  |
Certain Marketable Securities [Member] |  |  |  |
Note 11 - Fair Value Measurements (Details) [Line Items] |  |  |  |
Asset Impairment Charges |  | 800 |  |
Fair Value, Inputs, Level 1 [Member] |  |  |  |
Note 11 - Fair Value Measurements (Details) [Line Items] |  |  |  |
Marketable Securities |  | 10,500 |  | 87,700
Fair Value, Inputs, Level 3 [Member] |  |  |  |
Note 11 - Fair Value Measurements (Details) [Line Items] |  |  |  |
Marketable Securities |  | $ 1,700 |  | $ 2,300
[1] | As of September 30, 2015 and December 31, 2014, the Company determined that $10.5 million and $87.7 million, respectively, of the Marketable securities estimated fair value were classified within Level 1 of the fair value hierarchy and the remaining $1.7 million and $2.3 million, respectively, were classified within Level 3 of the fair value hierarchy.

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the cost method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596 + Details
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- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2921-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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