Investment Securities (Details) - Investments classified by maturity date (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Investment Securities Available-for-Sale:
Due in one year or less	$ 14,395
Due in one year or less	14,543
Due after one year through five years	43,153
Due after one year through five years	44,425
Due after five years through ten years	110,494
Due after five years through ten years	115,594
Due after ten years	54,125
Due after ten years	54,275
Total	299,867
Total	307,502	323,070
Investment Securities Held-to-Maturity:
Due in one year or less	7,059
Due in one year or less	7,140
Due after one year through five years	7,907
Due after one year through five years	8,056
Due after five years through ten years	69,114
Due after five years through ten years	70,359
Due after ten years	126,567
Due after ten years	129,892
Total	217,567	215,286
Total	222,393	210,958
Total investment securities	517,434
Total investment securities	529,895
Residential Mortgage Backed Securities [Member]
Investment Securities Available-for-Sale:
Investment Securities Available-for-Sale: amortized cost	58,459
Investment Securities Available-for-Sale: fair value	59,691
Total	59,691	48,874
Investment Securities Held-to-Maturity:
Investment Securities Held-to-Maturity: amoritzed cost	2,616
Investment Securities Held-to-Maturity: fair value	2,623
Total	2,623	2,182
Commercial Mortgage Backed Securities [Member]
Investment Securities Available-for-Sale:
Investment Securities Available-for-Sale: amortized cost	3,057
Investment Securities Available-for-Sale: fair value	3,016
Total	3,016	6,991
Investment Securities Held-to-Maturity:
Investment Securities Held-to-Maturity: amoritzed cost	4,304
Investment Securities Held-to-Maturity: fair value	4,323
Total	4,323	4,396
Equity Securities [Member]
Investment Securities Available-for-Sale:
Investment Securities Available-for-Sale: amortized cost	376
Investment Securities Available-for-Sale: fair value	289
Total	289	287
Money Market Funds [Member]
Investment Securities Available-for-Sale:
Investment Securities Available-for-Sale: amortized cost	15,808
Investment Securities Available-for-Sale: fair value	15,669
Total	$ 15,669	$ 5,724