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Note 4 - Marketable Securities (Details) - Marketable Securities (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Note 4 - Marketable Securities (Details) - Marketable Securities [Line Items]
Adjusted cost	$ 99,440	$ 92,199
Unrealized Gains	13,612	12,910
Unrealized Losses	(2,782)	(838)
Fair Value	110,270	104,271
Equity Securities [Member]
Note 4 - Marketable Securities (Details) - Marketable Securities [Line Items]
Adjusted cost	58,635	51,711
Unrealized Gains	11,073	11,597
Unrealized Losses	(2,745)	(278)
Fair Value	66,963	63,030
Preferred Stock [Member]
Note 4 - Marketable Securities (Details) - Marketable Securities [Line Items]
Adjusted cost	18,756	18,519
Unrealized Gains	1,613	893
Unrealized Losses	(25)	(299)
Fair Value	20,344	19,113
Trust Preferred Securities [Member]
Note 4 - Marketable Securities (Details) - Marketable Securities [Line Items]
Adjusted cost	20,240	19,726
Unrealized Gains	803	386
Unrealized Losses	(12)	(235)
Fair Value	21,031	19,877
Debt Securities [Member]
Note 4 - Marketable Securities (Details) - Marketable Securities [Line Items]
Adjusted cost	1,809	2,243
Unrealized Gains	123	34
Unrealized Losses		(26)
Fair Value	$ 1,932	$ 2,251

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.4)

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-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 5

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Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 2

-Article 5



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-Topic 210

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The increase (decrease), resulting in a gain, in the difference between the fair value and the carrying value, or in the comparative fair values, of securities held at each balance sheet date, that was included in earnings for the period.

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The increase (decrease), resulting in a loss, in the difference between the fair value and the carrying value, or in the comparative fair values, of securities held at each balance sheet date, that was included in earnings for the period.

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