Note 12 - Warrants (Detail) - Information About Warrants Outstanding	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Warrants	89,254,000	134,536,000
From $6.00 to $13.80 [Member] \| Warrant [Member]
Warrants	112,779
Weighted Average Remaining Contractual Life (Years)	3 years 146 days
Weighted Average Exercise Price	13.80
From $13.86 to $24.00 [Member] \| Warrant [Member]
Warrants	300,000
Weighted Average Remaining Contractual Life (Years)	3 years 292 days
Weighted Average Exercise Price	15.36
Warrant [Member]
Warrants	412,779	412,779
Weighted Average Remaining Contractual Life (Years)	3 years 219 days
Weighted Average Exercise Price	14.11

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-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 b(1)(c), d(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant