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Loans - Schedule of Impaired Loans (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Receivables [Abstract]
Impaired loans without a valuation allowance	$ 1,444	$ 1,703	$ 924
Impaired loans with a valuation allowance	345	2,818	1,516
Total impaired loans	1,789	4,521	2,440
Valuation allowance related to impaired loans	202	771	516
Total non-accrual loans	1,327	4,609	3,329
Total loans past-due ninety days or more and still accruing	0	0	0
Quarter ended average investment in impaired loans	1,928	4,363	2,532
Year to date average investment in impaired loans	$ 2,090	$ 4,342	$ 3,274

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Year To Date Impaired Financing Receivable Average Recorded Investment

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Recorded investment in financing receivables that are 90 days or more past due and still accruing.

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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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