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Note 1 - Organization and Significant Accounting Policies (Detail) - Summary of Earnings (Loss) Per Share | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Basic weighted-average shares | 22,709,000 | 24,095,000 | 24,213,000
Conversion of unsecured loan notes | 7,000 | 7,000 | 7,000
Unexercised options | 63,000 | 188,000 | 185,000
Unvested restricted stock units | 756,000 | 343,000 |
Diluted weighted-average shares | 23,535,000 | 24,633,000 | 24,405,000

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