Note 16 - Share-Based Compensation (Detail)	12 Months Ended	60 Months Ended	24 Months Ended
Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2012 From Grant Date [Member]	Dec. 31, 2012 Accelerated Grant Date [Member]	Dec. 31, 2012 Coupon Rate [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date		Dec. 31, 2008
Percent Of Vesting		50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			2 years	1 year
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	2.00%				0.00%

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(iv)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph e(2)(d)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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