Changes In Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Balance, Foreign Currency Translation Adjustment	$ 3,178		$ 1,937		$ 4,169
Other comprehensive income, Foreign Currency Translation Adjustment	2,950		1,241		(2,232)
Amounts reclassified from accumulated other comprehensive income, Foreign Currency Translation Adjustment	0		0		0
Balance, Foreign Currency Translation Adjustment	6,128		3,178		1,937
Balance, Defined Benefit Pension Adjustment	(21,544)		(18,555)		(12,499)
Other comprehensive income, Defined Benefit Pension Adjustment	5,909	[1]	(3,558)	[1]	(6,403)	[1]
Amounts reclassified from accumulated other comprehensive income, Defined Benefit Pension Adjustment	663	[2]	569	[2]	347	[2]
Balance, Defined Benefit Pension Adjustment	(14,972)		(21,544)		(18,555)
Balance, Total Accumulated Other Comprehensive (Loss) Income	(18,366)		(16,618)		(8,330)
Other Comprehensive income, Total Accumulated Other Comprehensive (Loss) Income	8,859		(2,317)		(8,635)
Amounts reclassified from accumulated other comprehensive income, Total Accumulated Other Comprehensive (Loss) Income	663		569		347
Balance, Total Accumulated Other Comprehensive (Loss) Income	$ (8,844)		$ (18,366)		$ (16,618)

[1] Amount represents actuarial gains (losses) arising from the Company’s postretirement benefit obligation. This amount was $5.9 million, net of $3.6 million tax expense, for 2013, $(3.6) million, net of a $2.1 million tax benefit, for 2012 and $(6.4) million, net of $3.9 million tax benefit in 2011. See Note 8, Employer Sponsored Benefit Plans.

[2] Amount represents the amortization of actuarial losses to pension expense arising from the Company’s postretirement benefit obligation. This amount was $0.7 million, net of $0.4 million tax benefit, for 2013, $0.6 million, net of $0.3 million tax benefit, for 2012 and $0.3 million, net of $0.2 million tax benefit in 2011. See Note 8, Employer Sponsored Benefit Plans.