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Note 9 - Financial Instruments and Fair Value (Details) - Investment in Auction Rate Securities (Auction Rate Securities [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Auction Rate Securities [Member]
Note 9 - Financial Instruments and Fair Value (Details) - Investment in Auction Rate Securities [Line Items]
Cost Basis Amount	$ 7,575	$ 7,575
Gross Unrealized Loss In Accumulated OCI	947	947
Fair Value	$ 6,628	$ 6,628

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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-Topic 210

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

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