FAIR VALUE MEASUREMENT Reconciliation Assets Measured at Fair Value on a Recurring Basis Using Unobservable Inputs (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash paid for contingent considerations	$ 1,781	$ 0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Cash paid for contingent considerations	1,781	0
Corporate Bond Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	47,850
Unrealized Loss Reported in AOCI	32,001
Effect of exchange rate changes	2,489
Ending Balance	82,340
Dio Equity Option Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	419
Unrealized Gain Reported in other expense (income), net	271
Effect of exchange rate changes	16
Ending Balance	706
Contingent Considerations On Acquisitions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash paid for contingent considerations	(1,781)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	2,917
Cash paid for contingent considerations	(1,781)
Effect of exchange rate changes	65
Ending Balance	$ 1,201