Note 10 - Short Term Borrowings (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Note 10 - Short Term Borrowings (Details) [Line Items]
Short-term Debt	$ 5,576,000us-gaap_ShortTermBorrowings	$ 12,083,000us-gaap_ShortTermBorrowings
Overnight Borrowings [Member]
Note 10 - Short Term Borrowings (Details) [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	$ 52,000,000

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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

-Publisher SEC

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

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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