Note 3 - Commitments and Contingencies (Details) (Former Chairman [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2013
Former Chairman [Member]
Note 3 - Commitments and Contingencies (Details) [Line Items]
Retirement Pay and Benefits	$ 10.8
Other Postretirement Benefits Payable	0.9
Other Postretirement Benefits Payable, Noncurrent	$ 2.7

The total amount of the entity's noncurrent obligation as of the balance sheet date under any other retirement plan(s), such as one or more defined contribution plans.

No definition available.

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