Note 12 - Stock-Based Compensation (Details) - Stock Options Activity (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 12 - Stock-Based Compensation (Details) - Stock Options Activity [Line Items]
Shares Under Option	235,442
Shares Under Option, Weighted-Average Exercise Price	$ 11.38
Options exercisable—December 31, 2013:	96,059
Options exercisable—December 31, 2013:	$ 11.01
Granted	35,000
Granted, Weighted-Average Exercise Price	$ 10.44
Exercised	(7,257)
Exercised, Weighted-Average Exercise Price	$ 10.94
Shares Under Option	164,098
Shares Under Option, Weighted-Average Exercise Price	$ 10.99
Employee Stock Option [Member]
Note 12 - Stock-Based Compensation (Details) - Stock Options Activity [Line Items]
Shares Under Option	235,442	180,942	251,500
Shares Under Option, Weighted-Average Exercise Price	$ 11.38	$ 16.50	$ 15.86
Options exercisable—December 31, 2013:	96,059
Options exercisable—December 31, 2013:	$ 11.01
Granted	35,000	139,000	16,000
Granted, Weighted-Average Exercise Price	$ 10.44	$ 10.96	$ 11.75
Exercised	(7,257)	(6,000)	(5,000)
Exercised, Weighted-Average Exercise Price	$ 10.94	$ 9.04	$ 3.84
Canceled	(99,087)	(78,500)	(81,558)
Canceled, Weighted-Average Exercise Price	$ 11.71	$ 22.64	$ 14.35
Shares Under Option	164,098	235,442	180,942
Shares Under Option, Weighted-Average Exercise Price	$ 10.99	$ 11.38	$ 16.50

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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