Securities (Details 3) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Fair value Less than 12 Months	$ 24,118	$ 26,858
Unrealized Loss Less Than 12 Months	(130)	(43)
Fair Value 12 Months Or More	936	937
Unrealised Loss 12 Months Or More	(3,074)	(3,132)
Fair Value Total	25,054	27,795
Unrealised Loss Total	(3,204)	(3,175)
Mortgage-Backed Securities, Issued By Us Government Sponsored Enterprises [Member]
Fair value Less than 12 Months	23,101	26,297
Unrealized Loss Less Than 12 Months	(122)	(39)
Fair Value 12 Months Or More	0	0
Unrealised Loss 12 Months Or More	0	0
Fair Value Total	23,101	26,297
Unrealised Loss Total	(122)	(39)
Collateralized Debt Obligations [Member]
Fair value Less than 12 Months	0	0
Unrealized Loss Less Than 12 Months	0	0
Fair Value 12 Months Or More	936	937
Unrealised Loss 12 Months Or More	(3,074)	(3,132)
Fair Value Total	936	937
Unrealised Loss Total	(3,074)	(3,132)
Us States and Political Subdivisions Debt Securities [Member]
Fair value Less than 12 Months	1,017	561
Unrealized Loss Less Than 12 Months	(8)	(4)
Fair Value 12 Months Or More	0	0
Unrealised Loss 12 Months Or More	0	0
Fair Value Total	1,017	561
Unrealised Loss Total	$ (8)	$ (4)