Fair Value of Financial Instruments - Quantitative Data (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Quantitative information about level 3 of fair value measurements for financial instruments
Other real estate owned	$ 711	$ 1,161
Non-recurring basis
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	1,998	1,322
Other real estate owned	711	1,161
Non-recurring basis | Commercial and industrial
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	1,028	313
Non-recurring basis | Franchise
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans		168
Non-recurring basis | Commercial owner occupied
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	486	536
Non-recurring basis | SBA
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	329
Non-recurring basis | Commercial non-owner occupied
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans		214
Non-recurring basis | One-to-four family
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	137	70
Non-recurring basis | Land
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	18	21
Non-recurring basis | Other real estate owned land
Quantitative information about level 3 of fair value measurements for financial instruments
Other real estate owned	711	1,161
Non-recurring basis | Level 3
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	1,998	1,322
Other real estate owned	711	1,161
Non-recurring basis | Level 3 | Commercial and industrial
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	$ 1,028	$ 313
Non-recurring basis | Level 3 | Commercial and industrial | Collateral analysis
Unobservable Inputs
Rate (as a percent)	6.00%	7.50%
Maturity (years)	1 year	6 years
Non-recurring basis | Level 3 | Commercial and industrial | Collateral analysis | Minimum
Unobservable Inputs
Unobservable Inputs (as a percent)	0.00%	0.00%
Non-recurring basis | Level 3 | Commercial and industrial | Collateral analysis | Maximum
Unobservable Inputs
Unobservable Inputs (as a percent)	10.00%	10.00%
Non-recurring basis | Level 3 | Franchise
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans		$ 168
Non-recurring basis | Level 3 | Franchise | Collateral analysis | Minimum
Unobservable Inputs
Rate (as a percent)		5.70%
Maturity (years)		7 years
Unobservable Inputs (as a percent)		0.00%
Non-recurring basis | Level 3 | Franchise | Collateral analysis | Maximum
Unobservable Inputs
Rate (as a percent)		6.70%
Maturity (years)		8 years
Unobservable Inputs (as a percent)		10.00%
Non-recurring basis | Level 3 | Commercial owner occupied
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	$ 486	$ 536
Non-recurring basis | Level 3 | Commercial owner occupied | Collateral analysis
Unobservable Inputs
Rate (as a percent)		7.75%
Maturity (years)	10 years	7 years
Non-recurring basis | Level 3 | Commercial owner occupied | Collateral analysis | Minimum
Unobservable Inputs
Rate (as a percent)	6.75%
Unobservable Inputs (as a percent)	0.00%	0.00%
Non-recurring basis | Level 3 | Commercial owner occupied | Collateral analysis | Maximum
Unobservable Inputs
Rate (as a percent)	7.75%
Unobservable Inputs (as a percent)	10.00%	10.00%
Non-recurring basis | Level 3 | SBA
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	$ 329
Non-recurring basis | Level 3 | SBA | Collateral analysis | Minimum
Unobservable Inputs
Rate (as a percent)	6.00%
Maturity (years)	15 years
Unobservable Inputs (as a percent)	0.00%
Non-recurring basis | Level 3 | SBA | Collateral analysis | Maximum
Unobservable Inputs
Rate (as a percent)	6.25%
Maturity (years)	23 years
Unobservable Inputs (as a percent)	10.00%
Non-recurring basis | Level 3 | Commercial non-owner occupied
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans		$ 214
Non-recurring basis | Level 3 | Commercial non-owner occupied | Collateral analysis
Unobservable Inputs
Rate (as a percent)		6.75%
Non-recurring basis | Level 3 | Commercial non-owner occupied | Collateral analysis | Minimum
Unobservable Inputs
Maturity (years)		2 years
Unobservable Inputs (as a percent)		0.00%
Non-recurring basis | Level 3 | Commercial non-owner occupied | Collateral analysis | Maximum
Unobservable Inputs
Maturity (years)		12 years
Unobservable Inputs (as a percent)		15.00%
Non-recurring basis | Level 3 | One-to-four family
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	$ 137	$ 70
Non-recurring basis | Level 3 | One-to-four family | Collateral analysis | Minimum
Unobservable Inputs
Rate (as a percent)	9.00%	9.00%
Maturity (years)	4 years	5 years
Unobservable Inputs (as a percent)	0.00%	0.00%
Non-recurring basis | Level 3 | One-to-four family | Collateral analysis | Maximum
Unobservable Inputs
Rate (as a percent)	15.00%	15.00%
Maturity (years)	14 years	16 years
Unobservable Inputs (as a percent)	10.00%	10.00%
Non-recurring basis | Level 3 | Land
Quantitative information about level 3 of fair value measurements for financial instruments
Collateral dependent impaired loans	$ 18	$ 21
Non-recurring basis | Level 3 | Land | Collateral analysis
Unobservable Inputs
Rate (as a percent)	13.00%	13.00%
Maturity (years)	15 years	15 years
Non-recurring basis | Level 3 | Land | Collateral analysis | Minimum
Unobservable Inputs
Unobservable Inputs (as a percent)	0.00%	0.00%
Non-recurring basis | Level 3 | Land | Collateral analysis | Maximum
Unobservable Inputs
Unobservable Inputs (as a percent)	10.00%	10.00%
Non-recurring basis | Level 3 | Other real estate owned land
Quantitative information about level 3 of fair value measurements for financial instruments
Other real estate owned	$ 711	$ 1,161
Non-recurring basis | Level 3 | Other real estate owned land | Collateral analysis
Unobservable Inputs
Rate (as a percent)	0.00%	0.00%
Maturity (years)	0 years	0 years
Non-recurring basis | Level 3 | Other real estate owned land | Collateral analysis | Minimum
Unobservable Inputs
Unobservable Inputs (as a percent)	0.00%	0.00%
Non-recurring basis | Level 3 | Other real estate owned land | Collateral analysis | Maximum
Unobservable Inputs
Unobservable Inputs (as a percent)	10.00%	10.00%