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M. Share-Based Compensation (Details-Options Granted) (Employee Stock Option [Member], USD $)
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12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
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|
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Employee Stock Option [Member]
|
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| Weighted average fair value of options granted | 1,099,000 | 88,000 | 124,000 |
| Weighted average fair value | $ 4.9986 | $ 4.9260 | $ 0.3930 |