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1. Summary of Significant Accounting Policies - Earnings per share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified |
12 Months Ended | |
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Dec. 31, 2013
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Dec. 31, 2012
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| Summary Of Significant Accounting Policies - Earnings Per Share Details | ||
| Numerator for basic and diluted earnings per share | $ 21,005 | $ 69,408 |
| Denominator for basic earnings per share - weighted average number of common shares outstanding during the year | 21,538 | 19,473 |
| Incremental common shares attibutable to exercise of outstanding options and warrants | 10,036 | 6,005 |
| Denominator for diluted earnings per share | 31,574 | 25,478 |
| Basic earnings per share | $ 0.98 | $ 3.56 |
| Diluted earnings per share | $ 0.67 | $ 2.72 |