GEOGRAPHIC INFORMATION AND REVENUES BY PRODUCT GROUP: (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 item	Dec. 31, 2011	Dec. 31, 2010
GEOGRAPHIC INFORMATION AND REVENUES BY PRODUCT GROUP:
Number of reportable segments	1
Revenues by geographic region
Total revenue	$ 500,799	$ 259,251	$ 154,640
United States
Revenues by geographic region
Total revenue	220,681	120,385	67,166
China
Revenues by geographic region
Total revenue	102,957	33,681	17,256
Israel
Revenues by geographic region
Total revenue	2,483	1,867	10,265
Europe
Revenues by geographic region
Total revenue	62,788	39,566	20,003
Other Americas
Revenues by geographic region
Total revenue	26,000	15,912	2,456
Other Asia
Revenues by geographic region
Total revenue	$ 85,890	$ 47,840	$ 37,494