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Note 14 - Subsequent Events (Details) (Subsequent Event [Member], USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended	0 Months Ended
	Apr. 20, 2015	May 29, 2015
Note 14 - Subsequent Events (Details) [Line Items]
Dividends, Common Stock, Cash (in Dollars)		$ 5.3us-gaap_DividendsCommonStockCash
Common Class A [Member]
Note 14 - Subsequent Events (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.20us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Common Class B [Member]
Note 14 - Subsequent Events (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.20us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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