Fair Value Measurements Assets Measured at Fair Value on a Nonrecurring Basis (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Level 1 [Member]
Net loans	$ 0	$ 0
Total assets	0	0
Level 1 [Member] | Other Assets [Member]
Other finanical assets	0	0
Level 2 [Member]
Net loans	0	0
Total assets	0	0
Level 2 [Member] | Other Assets [Member]
Other finanical assets	0	0
Level 3 [Member]
Net loans	189,143	216,812
Total assets	253,313	280,731
Level 3 [Member] | Other Assets [Member]
Other finanical assets	64,170	63,919
Total [Member]
Net loans	189,143	216,812
Total assets	253,313	280,731
Total [Member] | Other Assets [Member]
Other finanical assets	$ 64,170	$ 63,919