Fair Value Measurement (Fair Value Assets and Liabilities Measured on Nonrecurring Basis) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Total investment securities, held to maturity	$ 5,733	$ 4,774
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member] | Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member] | Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member] | Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity	217	1,226
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity	217	1,226
Non-covered Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity	51,968	74,639
Level 1 [Member] | Non-covered Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity
Level 2 [Member] | Non-covered Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity
Level 3 [Member] | Non-covered Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity	51,968	74,639
Non-covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity	7,270	7,958
Level 1 [Member] | Non-covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity
Level 2 [Member] | Non-covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity
Level 3 [Member] | Non-covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity	7,270	7,958
Covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity	5,963	8,708
Level 1 [Member] | Covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity
Level 2 [Member] | Covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity
Level 3 [Member] | Covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total investment securities, held to maturity	5,963	8,708
Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total	0
Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total	0
Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total	65,418	92,531
Fair Value, Measurements, Nonrecurring [Member]
Total	$ 65,418	$ 92,531