Fair Value Measurements - Summary of Quantitative Fair Value Measurements for Level 3 (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired Loans, net	$ 2,069	$ 2,077
Other real estate owned, net	2,899	3,897
Impaired Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired Loans, net	2,069	2,077
Other Real Estate Owned
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other real estate owned, net	$ 2,899	$ 3,897
Minimum | Impaired Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Input, Selling Cost	10.00%	10.00%
Unobservable Input, Lack of Marketability	25.00%	25.00%
Minimum | Other Real Estate Owned
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Input, Selling Cost	3.00%	3.00%
Unobservable Input, Lack of Marketability	7.00%	7.00%
Maximum | Impaired Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Input, Selling Cost	20.00%	20.00%
Unobservable Input, Lack of Marketability	100.00%	100.00%
Maximum | Other Real Estate Owned
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Input, Selling Cost	13.00%	13.00%
Unobservable Input, Lack of Marketability	20.00%	30.00%
Weighted Average | Impaired Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Input, Selling Cost	10.00%	10.00%
Unobservable Input, Lack of Marketability	56.00%	54.00%
Weighted Average | Other Real Estate Owned
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Input, Selling Cost	5.00%	6.00%
Unobservable Input, Lack of Marketability	11.00%	15.00%