Note 13 - Subsequent Events (Details) (Subsequent Event [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
Apr. 22, 2015	Apr. 22, 2015
Subsequent Event [Member]
Note 13 - Subsequent Events (Details) [Line Items]
Stock Repurchase Program, Authorized Amount	$ 5	$ 5
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	1.96	1.96
Stock Repurchase Program, Potential Reduction in Shares, Percentage	21.90%

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

No definition available.

Name:	us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant