GEOGRAPHIC INFORMATION AND REVENUES BY PRODUCT GROUP: (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 item	Dec. 31, 2012	Dec. 31, 2011
GEOGRAPHIC INFORMATION AND REVENUES BY PRODUCT GROUP:
Number of reportable segments	1
Revenues by geographic region
Total revenue	$ 390,436	$ 500,275	$ 259,251
United States
Revenues by geographic region
Total revenue	175,491	220,157	120,385
China
Revenues by geographic region
Total revenue	67,517	102,957	33,681
Israel
Revenues by geographic region
Total revenue	2,479	2,483	1,867
Europe
Revenues by geographic region
Total revenue	51,973	62,788	39,566
Other Americas
Revenues by geographic region
Total revenue	16,869	26,000	15,912
Other Asia
Revenues by geographic region
Total revenue	$ 76,107	$ 85,890	$ 47,840