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Note D - Stock Option Activity by Exercise Price (Details)	6 Months Ended
	Jun. 30, 2016 $ / shares shares
Exercise Price 1 [Member]
Exercise Price (in dollars per share) | $ / shares	$ 15,000
Shares Under Outstanding Options (in shares)	1.7
Weighted-Average Remaining Contractual Term	15000 years
Exercise Price 2 [Member]
Exercise Price (in dollars per share) | $ / shares	$ 6,000
Shares Under Outstanding Options (in shares)	0.9
Weighted-Average Remaining Contractual Term	6000 years
Exercise Price 3 [Member]
Exercise Price (in dollars per share) | $ / shares	$ 26,600
Shares Under Outstanding Options (in shares)	5.9
Weighted-Average Remaining Contractual Term	13800 years
Exercise Price 4 [Member]
Exercise Price (in dollars per share) | $ / shares	$ 5,998
Shares Under Outstanding Options (in shares)	4.4
Weighted-Average Remaining Contractual Term	5443 years
Exercise Price 5 [Member]
Exercise Price (in dollars per share) | $ / shares	$ 4,000
Shares Under Outstanding Options (in shares)	0.7
Weighted-Average Remaining Contractual Term	4000 years
Shares Under Outstanding Options (in shares)	3.8
Weighted-Average Remaining Contractual Term	44243 years

X

- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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X

- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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