Changes and Reclassifications Out of Accumulated Other Comprehensive Income (Tax Effect of Changes and Reclassifications Out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Changes and Reclassifications Out of Other Comprehensive Income [Abstract]
Realized (gains) losses on sale of securities	$ (2,164)	$ (567)	$ (2,459)	$ (921)
Tax expense (benefit)	(786)	(198)	(892)	(322)
Reclassified amount, net of tax	$ (1,378)	$ (369)	$ (1,567)	$ (599)