Loans and Allowance for Loan Losses Impaired Loans (Details) $ in Thousands	Dec. 31, 2015 USD ($) Borrowers	Dec. 31, 2014 Borrowers
Loans and Allowance for Loan Losses [Abstract]
Impaired loans, number of borrowers | Borrowers	13	11
Impaired loans also impaired at end of prior year, number of borrowers | Borrowers	9
Impaired loans also impaired at end of prior year | $	$ 1,274
Impaired loans, commitment to lend | $	$ 0