Note 17 - Interest Rate Hedging (Details) (Interest Rate Swap [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Interest Rate Swap [Member]
Note 17 - Interest Rate Hedging (Details) [Line Items]
Derivative, Amount of Hedged Item	$ 10.0
Derivative, Term of Contract	5 years

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_DerivativeTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration