The Company and Summary of Significant Accounting Policies (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
(Liabilities) assets at fair value
Contingent consideration arrangement	$ 88,100
Recurring basis | Fair Value
(Liabilities) assets at fair value
Nonqualified deferred compensation	1,991	132
Designated derivatives	1,117	2,434
Non-designated derivatives	(87)	(95)
Contingent consideration arrangement	91,600
Recurring basis | Level 1
(Liabilities) assets at fair value
Nonqualified deferred compensation	1,991	132
Recurring basis | Level 2
(Liabilities) assets at fair value
Designated derivatives	1,117	2,434
Non-designated derivatives	(87)	(95)
Recurring basis | Level 3
(Liabilities) assets at fair value
Contingent consideration arrangement	$ 91,600