Note 3 - Derivative Instruments and Fair Value - Fair Values of Cash, Accounts Receivable, Accounts Payable and Accrued Expenses (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Reported Value Measurement [Member]
Debt
Short-term borrowings and long-term debt	$ 31,253,805	$ 27,411,556
Estimate of Fair Value Measurement [Member]
Debt
Short-term borrowings and long-term debt	$ 31,253,805	$ 27,411,556

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13476-108611

Name:	us-gaap_DebtInstrumentFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant