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Note 11 - Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Marketable Securities [Table Text Block]

		December 31, 2015
		Amortized Cost				Gross Unrealized Gains/Losses				Estimated Fair Value
Available-for-sale:
Equity securities		$	5,511			$	398			$	5,909
Held-to-maturity:
Debt securities			1,656				(1	)			1,655
Total marketable securities		$	7,167			$	397			$	7,564

		December 31, 2014
		Amortized Cost				Gross Unrealized Gains/Losses				Estimated Fair Value
Available-for-sale:
Equity securities		$	41,462			$	46,197			$	87,659
Held-to-maturity:
Debt securities			2,576				(200	)			2,376
Total marketable securities		$	44,038			$	45,997			$	90,035

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- References

No definition available.

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- Definition

Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26626-111562

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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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