The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

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+ Details

Note 3 - Stock-Based Compensation and Stock Option Activity (Detail) (USD $)	3 Months Ended			12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012
Stock Issued During Period, Value, Share-based Compensation, Forfeited		$ 62,000
Share Price (in Dollars per share)	$ 3.83
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)	$ 1.68	$ 1.31
Proceeds from Stock Options Exercised		38,000			81,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			3 years	3 years
In The Money Options Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in Shares)	564,298
In The Money Options Exercisable [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in Shares)	205,315
Stock Options [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	346,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 248 days
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 15,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	9 months