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Income Taxes Income Taxes (Provision of Income Taxes from Continuing Operations) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Current:      
U. S. federal provision (benefit) $ 9,840 $ 1,188 $ (672)
State provision (benefit) 862 772 (522)
Total current provision (benefit) 10,702 1,960 (1,194)
Deferred:      
U. S. federal provision 1,928 5,117 8,708
State provision (benefit) 1,107 178 1,731
Total deferred provision 3,035 5,295 10,439
Total income tax provision $ 13,737 $ 7,255 $ 9,245