Components of Accumulated Other Comprehensive Loss, Net (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Accumulated translation adjustment:
Balance at beginning of period	$ (2,944)		$ (2,804)
Translation gain during period	690		1,125
Balance at end of period	(2,254)		(1,679)
Accumulated effect of retirement benefit obligations:
Balance at beginning of period	(745)		(1,160)
Amounts reclassified from accumulated other comprehensive loss:
Amortization of actuarial losses, net of tax of $5 and $9 for the three months ended March 31, 2014 and 2013, respectively	7	[1]	13	[1]
Balance at end of period	(738)		(1,147)
Accumulated deferred losses on cash flow hedges:
Balance at beginning of period	(31)		(272)
Derivative fair value adjustment, net of tax of $6 and $9 for the three months ended March 31, 2014 and 2013, respectively	9		13
Balance at end of period	$ (22)		$ (259)

[1] Amounts are recorded in selling, general and administrative expense on the Condensed consolidated statements of operations.