Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Details Textual)

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Accumulated Other Comprehensive Income (Details Textual) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2013
Accumulated Other Comprehensive Income (Textual) [Abstract]    
Effective tax rate   38.47%
Realized gain   $ 10.8
Unrealized gain reclassified $ 5.9 $ 7.5