Fair Value Measurements (Details 3) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Impaired loans measured at fair value on a nonrecurring basis
Impaired loans	$ 25,291	$ 46,596
OREO	33,956	23,945
Total	59,247	70,541
Level 1 [Member]
Impaired loans measured at fair value on a nonrecurring basis
Impaired loans
OREO
Total
Level 2 [Member]
Impaired loans measured at fair value on a nonrecurring basis
Impaired loans
OREO
Total
Level 3 [Member]
Impaired loans measured at fair value on a nonrecurring basis
Impaired loans	25,291	46,596
OREO	33,956	23,945
Total	$ 59,247	$ 70,541