Benefit Plans - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2013 Age	Dec. 31, 2012	Dec. 31, 2011	Oct. 02, 2013 Company-Owned Life Insurance Policies [Member]	Dec. 31, 2013 Company-Owned Life Insurance Policies [Member]
Defined Benefit Plan Disclosure [Line Items]
Additional compensation of employer	10.00%			10.00%
Description for applicability of compensation program	Distributions from the applicable trust are made upon or shortly after the executive reaches age 70, disability, death, or earlier election by the executive after age 60
Senior executive age for participate in plan	70
Senior executive age for earlier election	60
Aggregate contribution of employer	$ 0
Aggregate contribution of employer					43
Deferred compensation expenses				43
Defined contribution plan eligibility minimum service period		1 year
Defined contribution retirement plan, Maximum matching contribution percentage		5.00%
Aggregate contribution of employer	$ 583	$ 643	$ 530