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Income Taxes Income Tax Reconciliation of Effective Tax Rate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Reconciliation of Effective Tax Rate [Abstract]      
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount $ 32,125 $ 30,425 $ 24,407
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount 3,652 2,820 2,199
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount 0 0 (9,291)
Income Tax Reconciliation, Change in State NOL Deferred Tax Asset – Net of Federal Tax Benefit 729 1,548 1,780
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount (32) 373 (148)
Provision (benefit) from income taxes $ 35,176 $ 35,166 $ 18,947