Company's Interest Rate Swaps (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Pay Fixed/Receive Variable Swaps
Derivative [Line Items]
Notional Amount	$ 23,200	$ 17,949
Estimated Fair Value	(1,608)	(1,280)
Years to Maturity	4 years 7 months 6 days	2 years 8 months 12 days
Receive Rate	3.30%	2.44%
Pay Rate	5.03%	5.41%
Pay Variable/Receive Fixed Swaps
Derivative [Line Items]
Notional Amount	23,200	17,949
Estimated Fair Value	1,608	1,280
Years to Maturity	4 years 7 months 6 days	2 years 8 months 12 days
Receive Rate	5.03%	5.41%
Pay Rate	3.30%	2.44%
Swap
Derivative [Line Items]
Notional Amount	46,400	35,898
Estimated Fair Value	$ 0	$ 0
Years to Maturity	4 years 7 months 6 days	2 years 8 months 12 days
Receive Rate	4.17%	3.92%
Pay Rate	4.17%	3.92%