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Security Types (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
US Government and Government Agencies and Authorities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	$ 0	$ 0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	0	0
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	10,101	5,013
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	30,135	46,072
Available-for-sale Securities, Fair Value, Total	40,236	51,085
Available-for-sale Securities, Gross Unrealized Gain (Loss)	280	182
Available-for-sale Securities, Gross Unrealized Losses	3	1
Available-for-sale Securities, Amortized Cost Basis	39,959	50,904
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	0	0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	0	0
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	5,238	14,935
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	147,430	149,863
Available-for-sale Securities, Fair Value, Total	152,668	164,798
Available-for-sale Securities, Gross Unrealized Gain (Loss)	3,057	2,534
Available-for-sale Securities, Gross Unrealized Losses	81	129
Available-for-sale Securities, Amortized Cost Basis	149,692	162,393
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	113	0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	2,187	414
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	19,186	17,761
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	62,226	63,538
Available-for-sale Securities, Fair Value, Total	83,712	81,713
Available-for-sale Securities, Gross Unrealized Gain (Loss)	4,916	4,339
Available-for-sale Securities, Gross Unrealized Losses	31	48
Available-for-sale Securities, Amortized Cost Basis	78,827	77,422
Trust Preferred Securities Pooled [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value		0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value		0
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value		0
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value		100
Available-for-sale Securities, Fair Value, Total		100
Available-for-sale Securities, Gross Unrealized Gain (Loss)		0
Available-for-sale Securities, Gross Unrealized Losses		130
Available-for-sale Securities, Amortized Cost Basis		230
Trust Preferred Securities Individual Issuer [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	0	0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	0	0
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	0	0
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	630	1,886
Available-for-sale Securities, Fair Value, Total	630	1,886
Available-for-sale Securities, Gross Unrealized Gain (Loss)	81	186
Available-for-sale Securities, Gross Unrealized Losses	144	243
Available-for-sale Securities, Amortized Cost Basis	693	1,943
Security Maturities, Total [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	113	0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	2,187	414
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	34,525	37,709
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	240,421	261,459
Available-for-sale Securities, Fair Value, Total	277,246	299,582
Available-for-sale Securities, Gross Unrealized Gain (Loss)	8,334	7,241
Available-for-sale Securities, Gross Unrealized Losses	259	551
Available-for-sale Securities, Amortized Cost Basis	$ 269,171	$ 292,892

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