Quarterly report pursuant to Section 13 or 15(d)

Total Comprehensive Income (Loss) (Details)

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Total Comprehensive Income (Loss) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Total Comprehensive Income (Loss)        
Total Comprehensive Income (Loss) $ 7,956 $ (1,444) $ 147 $ (8,241)