Financial Instruments with Off Balance Sheet Risk and Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Commitment expiration date, minimum	30 days
Commitment expiration date, maximum	120 days
Derivative [Line Items]
Fair value of interest rate swaps	$ 222
Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount of interest rate derivatives	$ 11,646

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant