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Note 7 - Commitments (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure Text Block Supplement [Abstract]
Operating Leases, Rent Expense, Net	$ 1,608,702us-gaap_OperatingLeasesRentExpenseNet	$ 1,636,171us-gaap_OperatingLeasesRentExpenseNet	$ 1,634,121us-gaap_OperatingLeasesRentExpenseNet

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- Details

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X

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

+ Details

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