The Company and Summary of Significant Accounting Policies (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments and Hedging Activities
Maximum maturity period of foreign currency forward or option contracts (in months)	15 months
Business Segment Reporting
Number of reportable business segments	6
Cash Equivalents
Money market funds	$ 154,105	$ 52,650
Nonvested stock units issued (NSUs)
Options excluded in the computation of diluted income per share
Options excluded in the computation of diluted income per share (in shares)	0	200	0
Restricted Stock Units (RSUs)
Options excluded in the computation of diluted income per share
Options excluded in the computation of diluted income per share (in shares)	795	671	319
Stock Appreciation Rights (SARs)
Options excluded in the computation of diluted income per share
Options excluded in the computation of diluted income per share (in shares)	525	525	525