Securities Available-for-Sale - Unrealized Gains (Losses) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Total unrealized gains/(losses) on securities available for sale, Gross Unrealized Gains	$ 11,897	$ 12,647
Total unrealized gains/(losses) on securities available for sale, Gross Unrealized Losses	(1,716)	(1,837)
Total unrealized gains/(losses) on securities available for sale, Net Unrealized Gains	10,181	10,810
Income tax expense/(benefit), Gross Unrealized Gains	4,164	4,426
Income tax expense/(benefit), Gross Unrealized Losses	(601)	(643)
Income tax expense/(benefit), Net Unrealized Gains	3,563	3,783
Net unrealized gains/(losses), net of tax included in accumulated other comprehensive income/(loss)	7,733	8,221
Net unrealized gains/(losses), net of tax included in accumulated other comprehensive income/(loss)	(1,115)	(1,194)
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	$ 6,618	$ 7,027