Goodwill and Other Intangible Assets (Summary of the Gross Carrying Amount and Accumulated Amortization of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Amortizable intangible assets:
Customer lists	$ 678	$ 678	$ 678
Customer Lists Accumulated Amortization	517	505	473
Core deposit premiums	8,560	8,560	8,560
Core Deposit premiums accumulated amortization	6,844	6,675	6,125
Gross Carrying Amount	9,238	9,238	9,238
Accumulated Amortization	7,361	7,180	6,598
Unamortizable intangible assets:
Goodwill	$ 65,835	$ 65,835	$ 65,835