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Income Taxes Reconciliation of the Change in Net Deferred Tax Assets to Deferred Tax Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Change in net deferred tax assets $ 1,419 $ (970) $ (119)
Deferred taxes allocated to other comprehensive income (311) (188) 352
Deferred Tax Assets Acquired in Business Acquisitions 0 0 (1,622)
Deferred income tax benefit (expense) $ 1,108 $ (1,158) $ (1,389)