Note 2 - Stock-Based Compensation (Details) - Stock Option Activity (Stock Option Plan 1999 [Member], USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended
Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Stock Option Plan 1999 [Member]
Note 2 - Stock-Based Compensation (Details) - Stock Option Activity [Line Items]
Options outstanding shares	46,000		46,000
Options outstanding weighted average exercise price	$ 23.96		$ 23.96
Options outstanding weighted average remaining contractual term	313 days
Options outstanding aggregate intrinsic value		$ 319
Exercisable at June 30, 2014		46,000
Exercisable at June 30, 2014		$ 23.96
Exercisable at June 30, 2014	313 days
Exercisable at June 30, 2014		$ 319
Options outstanding shares			46,000
Options outstanding weighted average exercise price			$ 23.96

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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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 remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for fully vested and expected to vest options that are exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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