Fair Value Measurements - Roll-forward of the Fair Value of the Contingent Consideration Categorized as Level 3 (Detail) (Contingent Consideration [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Contingent Consideration [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 1,180	$ 1,405	$ 1,007
Currency translation impact on contingent liabilities	28
Payments on contingent liabilities		(1,405)
Contingent liabilities added from LeMag acquisition		1,180
Contingent liabilities accrued	288		398
Ending Balance	$ 1,496	$ 1,180	$ 1,405