Amounts Recognized 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
Defined Benefit Plan Disclosure [Line Items]
Ending balance, accumulated other comprehensive (income) loss, net of tax	$ 110,855	$ 132,048	$ 159,353
Pension
Defined Benefit Plan Disclosure [Line Items]
Beginning balance, prior service cost (credit)	216	251
Net Amortization and deferral	(34)	(35)
Actuarial changes in benefit obligation, prior service cost (credit)
Impact of currency translation, prior service cost (credit)
Ending balance, prior service cost (credit)	182	216	251
Beginning balance, net (gain) or loss	186,700	204,257
Net amortization and deferral, net (gain) or loss	(5,813)	(6,439)
Curtailment, net (gain) or loss		118
Settlement, net (gain) or loss		(106)	5
Actuarial changes in benefit obligation, net (gain) or loss	(36,446)	(11,356)
Impact of currency translation, net (gain) or loss	243	226
Ending balance, net (gain) or loss	144,684	186,700	204,257
Beginning balance, deferred taxes	(67,567)	(74,488)
Net amortization and deferral, deferred taxes	1,947	2,287
Curtailment, deferred taxes		(44)
Settlement, deferred taxes		40
Actuarial changes in benefit obligation, deferred taxes	13,206	4,696
Impact of currency translation, deferred taxes	(66)	(58)
Ending balance, deferred taxes	(52,480)	(67,567)	(74,488)
Beginning balance, accumulated other comprehensive (income) loss, net of tax	119,349	130,020
Net amortization and deferral, accumulated other comprehensive (income) loss, net of tax	(3,900)	(4,187)
Curtailment, accumulated other comprehensive (income) loss, net of tax		74
Settlement, accumulated other comprehensive (income) loss, net of tax		(66)
Actuarial changes in benefit obligation, accumulated other comprehensive (income) loss, net of tax	(23,240)	(6,660)
Impact of currency translation, accumulated other comprehensive (income) loss, net of tax	177	168
Ending balance, accumulated other comprehensive (income) loss, net of tax	92,386	119,349	130,020
Other Benefit
Defined Benefit Plan Disclosure [Line Items]
Beginning balance, prior service cost (credit)	(38)	(93)
Net Amortization and deferral	55	55
Actuarial changes in benefit obligation, prior service cost (credit)
Ending balance, prior service cost (credit)	17	(38)	(93)
Beginning balance, net (gain) or loss	12,287	6,845
Net amortization and deferral, net (gain) or loss	(1,398)	(719)
Settlement, net (gain) or loss
Actuarial changes in benefit obligation, net (gain) or loss	(3,833)	6,161
Ending balance, net (gain) or loss	7,056	12,287	6,845
Beginning balance, deferred taxes	(4,346)	(2,326)
Net amortization and deferral, deferred taxes	492	277
Actuarial changes in benefit obligation, deferred taxes	1,432	(2,297)
Ending balance, deferred taxes	(2,422)	(4,346)	(2,326)
Beginning balance, accumulated other comprehensive (income) loss, net of tax	7,908	4,528
Net amortization and deferral, accumulated other comprehensive (income) loss, net of tax	(856)	(484)
Actuarial changes in benefit obligation, accumulated other comprehensive (income) loss, net of tax	(2,401)	3,864
Ending balance, accumulated other comprehensive (income) loss, net of tax	4,651	7,908	4,528
Beginning balance, initial obligation	5	102
Net amortization and deferral, initial obligation	(5)	(97)
Actuarial changes in benefit obligation, initial obligation
Ending balance, initial obligation		$ 5	$ 102