Note 11 - Fair Value of Financial Instruments (Details) (Interest Rate Swap [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]
Derivative, Amount of Hedged Item	$ 10.0us-gaap_DerivativeAmountOfHedgedItem
Forward Contracts [Member] \| Trust Preferred Securities Subject to Mandatory Redemption [Member]
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]
Derivative, Amount of Hedged Item	$ 10.0

Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument.

No definition available.

Name:	us-gaap_DerivativeAmountOfHedgedItem
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant