Accumulated Other Comprehensive Income (Loss) Reclassification out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	$ (1,127)	$ (1,444)	$ (213)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	417	534	$ 79
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(710)	(910)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	(1,127)	(1,444)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(1,127)	(1,444)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	417	534
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ (710)	$ (910)