Note 17 - Quarterly Financial Data (Unaudited) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Jun. 30, 2013
Brazilian Lawsuit Damages [Member]
Note 17 - Quarterly Financial Data (Unaudited) (Details) [Line Items]
Other Income	$ 0.5
The 2013 ESOP [Member]
Note 17 - Quarterly Financial Data (Unaudited) (Details) [Line Items]
Other Income	$ 0.8

Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.4)

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 4

-Article 7

Name:	us-gaap_OtherIncome
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration