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10. Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Effective tax rate 32.00% 49.00% 31.00% 42.00%
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit $ 2.9   $ 2.9  
U.S. Federal [Member]        
Statutory Rates 35.00% 35.00% 35.00% 35.00%