The Company and Summary of Significant Accounting Policies (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets (Liabilities) at fair value
Contingent consideration for acquisition of business		$ 88,100
Recurring basis | Fair Value
Assets (Liabilities) at fair value
Nonqualified deferred compensation	3,653	1,991
Nonqualified deferred compensation	(3,653)	(1,991)
Designated derivatives		1,117
Designated derivatives		(87)
Non-designated derivatives	839
Non-designated derivatives	(336)
Contingent consideration for acquisition of business	(71,460)	(91,600)
Recurring basis | Level 1
Assets (Liabilities) at fair value
Nonqualified deferred compensation	3,653	1,991
Nonqualified deferred compensation	(3,653)	(1,991)
Recurring basis | Level 2
Assets (Liabilities) at fair value
Designated derivatives		1,117
Designated derivatives		(87)
Non-designated derivatives	839
Non-designated derivatives	(336)
Recurring basis | Level 3
Assets (Liabilities) at fair value
Contingent consideration for acquisition of business	$ (71,460)	$ (91,600)