Segment Information (Details 2) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Subcategory revenues
Sales	$ 184,227	$ 150,361	$ 349,749	$ 277,388
Growth Products [Member]
Subcategory revenues
Sales	132,099	89,001	237,680	158,805
Growth Products [Member] | Broadband Access [Member]
Subcategory revenues
Sales	77,062	44,971	128,844	81,333
Growth Products [Member] | Optical Access [Member]
Subcategory revenues
Sales	22,008	16,128	42,924	27,387
Growth Products [Member] | Internetworking [Member]
Subcategory revenues
Sales	33,029	27,902	65,912	50,085
Traditional Products [Member]
Subcategory revenues
Sales	52,128	61,360	112,069	118,583
Traditional Products [Member] | High bit-rate Digital Subscriber Line [Member]
Subcategory revenues
Sales	34,049	42,174	74,994	82,104
Traditional Products [Member] | Other products [Member]
Subcategory revenues
Sales	$ 18,079	$ 19,186	$ 37,075	$ 36,479