Employee Benefit Plans - Net Amounts Recognized in the Financial Statements (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Net Amounts Recognized in the Financial Statements:
Current liability	$ 112	$ 91
Unrecognized actuarial gain reported within accrued pension benefits	5,010	4,858
Net accrued pension liability recognized	5,122	4,949
Amounts included in other accumulated comprehensive income not yet recognized in periodic pension cost, net of tax	(511)	(780)
Amounts expected to be amortized from accumulated comprehensive income into net periodic pension costs over the next fiscal year consists of net actuarial gain/loss	$ 1	$ 22