Securities (Schedule of Proceeds from Sales of Securities) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Schedule of Investments [Line Items]
Proceeds from Sales			$ 0	$ 105,339
Gross Gains on Sales	$ 0	$ 968	0	968
Sale of Securities
Schedule of Investments [Line Items]
Proceeds from Sales	0	42,364	0	105,339
Gross Gains on Sales	0	968	0	968
Income Taxes on Gross Gains	$ 0	$ 339	$ 0	$ 339