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Note D - Stock Based Compensation (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended					9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 Amortization, Current Year [Member]	Sep. 30, 2014 Amortization, Next Year [Member]	Sep. 30, 2014 Amortization, Year 3 [Member]	Sep. 30, 2014 Amortization Year 4 [Member]	Sep. 30, 2014 Restricted Stock [Member] Minimum [Member] 2014 Stock Option Plan [Member]	Sep. 30, 2014 Nonqualified Options [Member] Minimum [Member] 2014 Stock Option Plan [Member]	Sep. 30, 2014 Nonqualified Options [Member] Maximum [Member] 2014 Stock Option Plan [Member]	Sep. 30, 2014 Nonqualified Options [Member] Annual Grant to Non-employee Member [Member]	Sep. 30, 2014 Stock Award [Member] Director [Member] 2014 Stock Option Plan [Member]	Sep. 30, 2013 Stock Award [Member] Director [Member]	Sep. 30, 2014 Increase in Annual Grant of Options, Number of Shares [Member]	Sep. 30, 2014 Diluted [Member]	Sep. 30, 2013 Diluted [Member]	Sep. 30, 2014 Basic [Member]	Sep. 30, 2013 Basic [Member]	Mar. 02, 2006 2006 Stock Option Plan [Member]
Note D - Stock Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)																					750,000
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent										85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period											5 years	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)			0											3,024	5,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)														$ 19.88
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value			$ 148,000	$ 180,000
Allocated Share-based Compensation Expense	30,000	39,000	146,000	315,000											180,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Grants in Period (in Shares)																60,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)													504
Allocated Share-based Compensation Expense, Impact on Earnings Per Share (in Dollars per share)																	$ (0.02)	$ (0.02)	$ (0.02)	$ (0.03)
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	260,000		260,000			30,000	116,000	86,000	28,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)				$ 5.13
Share Price (in Dollars per share)	$ 36.25		$ 36.25
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options			$ 841,000		$ 19,000

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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