Fair Value - Financial Assets and Liabilities Measured on a Non-Recurring Basis (Details) - Non-recurring basis - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	$ 831	$ 2,702
Significant Unobservable Inputs (Level 3)
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	831	2,702
Commercial
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	190	1,333
Commercial | Significant Unobservable Inputs (Level 3)
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	190	1,333
Commercial | Real estate
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	440	503
Commercial | Real estate | Significant Unobservable Inputs (Level 3)
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	440	503
Land and construction | Real estate
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	201	219
Land and construction | Real estate | Significant Unobservable Inputs (Level 3)
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	$ 201	219
Home equity | Real estate
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:		647
Home equity | Real estate | Significant Unobservable Inputs (Level 3)
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:		$ 647