Investments Securities #3 - Continuous unrealized losses (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Total Securities
Fair Value and Gross unrealized losses
Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 11,232	$ 2,358
Unrealized Loss Position, Less Than Twelve Months,Gross Unrealized Losses	121	104
Unrealized Loss Position, Twelve Months or More, Fair Value	7,453	7,416
Unrealized Loss Position, Twelve Months or More, Gross Unrealized Losses	1,974	2,116
Unrealized Loss Position, Fair Value, Total	18,685	9,774
Unrealized Loss Position, Gross Unrealized Losses, Total	2,095	2,220
US Government-sponsored Enterprises Debt Securities [Member]
Fair Value and Gross unrealized losses
Unrealized Loss Position, Less than Twelve Months, Fair Value	4,974	1,527
Unrealized Loss Position, Less Than Twelve Months,Gross Unrealized Losses	56
Unrealized Loss Position, Twelve Months or More, Fair Value	1,703	1,824
Unrealized Loss Position, Twelve Months or More, Gross Unrealized Losses	6	11
Unrealized Loss Position, Fair Value, Total	6,677	3,351
Unrealized Loss Position, Gross Unrealized Losses, Total	62	11
Mortgage-backed securities
Fair Value and Gross unrealized losses
Unrealized Loss Position, Less than Twelve Months, Fair Value	6,258
Unrealized Loss Position, Less Than Twelve Months,Gross Unrealized Losses	65
Unrealized Loss Position, Twelve Months or More, Fair Value
Unrealized Loss Position, Twelve Months or More, Gross Unrealized Losses
Unrealized Loss Position, Fair Value, Total	6,258
Unrealized Loss Position, Gross Unrealized Losses, Total	65
Other debt securities
Fair Value and Gross unrealized losses
Unrealized Loss Position, Less than Twelve Months, Fair Value		831
Unrealized Loss Position, Less Than Twelve Months,Gross Unrealized Losses		104
Unrealized Loss Position, Twelve Months or More, Fair Value	4,950	4,809
Unrealized Loss Position, Twelve Months or More, Gross Unrealized Losses	1,948	2,086
Unrealized Loss Position, Fair Value, Total	4,950	5,640
Unrealized Loss Position, Gross Unrealized Losses, Total	1,948	2,190
Equity Securities [Member]
Fair Value and Gross unrealized losses
Unrealized Loss Position, Less than Twelve Months, Fair Value
Unrealized Loss Position, Less Than Twelve Months,Gross Unrealized Losses
Unrealized Loss Position, Twelve Months or More, Fair Value	800	783
Unrealized Loss Position, Twelve Months or More, Gross Unrealized Losses	20	19
Unrealized Loss Position, Fair Value, Total	800	783
Unrealized Loss Position, Gross Unrealized Losses, Total	$ 20	$ 19