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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Ratio of the net operating income produced by an asset and its capital cost (original prices paid to buy the asset), used as an input to measure fair value.

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Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale.

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Note 10 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Fair Value, Inputs, Level 1 [Member]
Marketable Securities	$ 6,500		$ 5,900
Fair Value, Inputs, Level 3 [Member]
Marketable Securities	$ 1,600		1,700
Discontinued Operations [Member]
Asset Impairment Charges		$ 100
Operating Properties [Member]
Asset Impairment Charges		21,900
Other Real Estate Investments [Member]
Asset Impairment Charges		5,300
Debt Securities [Member]
Asset Impairment Charges		800
Minimum [Member]
Fair Value Inputs, Cap Rate	6.50%
Fair Value Inputs, Discount Rate	9.25%
Maximum [Member]
Fair Value Inputs, Cap Rate	7.75%
Fair Value Inputs, Discount Rate	10.80%
Marketable Securities	$ 8,141		$ 7,565
Asset Impairment Charges	$ 68,126	$ 27,989