Note 19 - Fair Value Measurements (Detail) - Liabilities Measured at Estimated Fair Value on a Recurring Basis (USD $)	Sep. 30, 2012	Sep. 21, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2010	Mar. 31, 2010
Embedded conversion feature	$ 19,460,000	$ 5,120,000	$ 12,470,000	$ 34,980,000	$ 22,860,000	$ 21,190,000

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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