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Note 8 - Equity Plans (Details) - Stock Based Compensation Expense Recognized on Restricted Stock Units (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Impact per basic share	$ 0.14	$ 0.12	$ 0.70	$ 0.82
Impact per diluted share	$ 0.14	$ 0.12	$ 0.70	$ 0.82
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
RSU expense before taxes	$ 360	$ 238	$ 881	$ 688
RSU expense after taxes	$ 225	$ 129	$ 561	$ 422
Impact per basic share	$ 0.02	$ 0.01	$ 0.05	$ 0.04
Impact per diluted share	$ 0.02	$ 0.01	$ 0.05	$ 0.04

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References+ Details