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Note I - Income Taxes (Details)	6 Months Ended
	Jun. 30, 2015
Note I - Income Taxes (Details) [Line Items]
Statute of Limitations	3 years
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Earliest Tax Year [Member]
Note I - Income Taxes (Details) [Line Items]
Open Tax Year	2011
Foreign Tax Authority [Member] | Canada Revenue Agency [Member] | Earliest Tax Year [Member]
Note I - Income Taxes (Details) [Line Items]
Open Tax Year	2011
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Note I - Income Taxes (Details) [Line Items]
Open Tax Year	2011

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 740



-SubTopic 10



-Section 50



-Paragraph 15



-Subparagraph (e)



-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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