Note 6 - Guarantees (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2014
Note 6 - Guarantees (Details) [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 13
Guarantee Term For Product And Short Term Equipment Leasing Arrangements	90 days
Guarantee Term For Long Term Equipment Leasing Arrangements	5 years
Third Party and Subsidiaries Financial Guarantees [Member]
Note 6 - Guarantees (Details) [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 80

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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