Note 2 - Summary of Accounting Policies (Detail) - Investments in Affiliated Companies - Balance Sheet Data (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Non-current liabilities	$ 484	$ 518
Investments In Affiliated Companies [Member]
Current assets	32,752	34,159
Non-current assets	22,495	22,209
Current liabilities	$ 16,006	$ 16,839

The amount of current assets reported by an equity method investment of the entity.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

Reference 7: http://www.xbrl.org/2003/role/presentationRef

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+ Details

- Definition

The amount of current liabilities reported by an equity method investment of the entity.

+ References

+ Details

- Definition

The amount of noncurrent assets reported by an equity method investment of the entity.

+ References

+ Details