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Note F - Income Taxes (Details) - Reconciliation of the Beginning and Ending Amount Of Unrecognized Tax Benefits (USD $)
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12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Reconciliation of the Beginning and Ending Amount Of Unrecognized Tax Benefits [Abstract] | |||
| Balance at beginning of year | $ 421,000 | $ 1,423,000 | $ 1,298,000 |
| Additions based on tax positions related to the current year | 189,000 | 68,000 | 132,000 |
| (Reduction) additions for tax positions of prior years | (1,000) | 117,000 | |
| Reductions due to lapse of applicable statute of limitations | (46,000) | (131,000) | (124,000) |
| Settlements | (48,000) | (938,000) | |
| Balance at end of year | $ 516,000 | $ 421,000 | $ 1,423,000 |