Fair Value Measurements (Financial Assets Measured at Fair Value on Nonrecurring Basis) (Details) (Fair value measurements, nonrecurring [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Impaired loans with specific allocation	$ 13,776	$ 11,991
Impaired loans net of partial charge-offs	3,842	4,227
Total	17,618	16,218
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Impaired loans with specific allocation	0	0
Impaired loans net of partial charge-offs	0	0
Total	0	0
Significant Other Observable Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Impaired loans with specific allocation	0	0
Impaired loans net of partial charge-offs	0	0
Total	0	0
Significant Unobservable Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Impaired loans with specific allocation	13,776	11,991
Impaired loans net of partial charge-offs	3,842	4,227
Total	$ 17,618	$ 16,218