Securities Available-for-sale - Unrealized Gains (Losses) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Total unrealized gains/(losses) on securities available for sale, Gross Unrealized Gains	$ 11,594	$ 12,647
Total unrealized gains/(losses) on securities available for sale, Gross Unrealized Losses	(1,638)	(1,837)
Total unrealized gains/(losses) on securities available for sale, Net Unrealized Gains/(Losses)	9,956	10,810
Income Tax expense/(benefit), Gross Unrealized Gains	4,058	4,426
Income Tax expense/(benefit), Gross Unrealized Losses	(573)	(643)
Income Tax expense/(benefit), Net Unrealized Gains/ (Losses)	3,485	3,783
Net unrealized gains/(losses), net of tax included in accumulated other comprehensive income/(loss), Gross Unrealized Gains	7,536	8,221
Net unrealized gains/(losses), net of tax included in accumulated other comprehensive income/(loss), Gross Unrealized Losses	(1,065)	(1,194)
Net unrealized gains/(losses), net of tax included in accumulated other comprehensive income/(loss), Net Unrealized Gains/ (Losses)	$ 6,471	$ 7,027