Fair Value - Financial Assets and Liabilities Measured on a Non-Recurring Basis (Details) - Non-recurring basis - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	$ 1,199	$ 2,702
Significant Unobservable Inputs (Level 3)
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	1,199	2,702
Commercial
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	143	1,333
Commercial | Significant Unobservable Inputs (Level 3)
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	143	1,333
Commercial and residential | Real estate
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	482	503
Commercial and residential | Real estate | Significant Unobservable Inputs (Level 3)
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	482	503
Land and construction | Real estate
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	213	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:	213	219
Home equity | Real estate
Financial Assets and Liabilities Measured on a Non-Recurring Basis
Impaired loans - held-for-investment:	361	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:	$ 361	$ 647