THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Product warranty
Maximum warranty period	3 years
Changes in the entity's liability for product warranty
Balance, beginning of the period	$ 1,097,000	$ 807,000
New warranties issued during the period	5,697,000	922,000
Reversal of warranty reserves	(813,000)	(33,000)
Settlements during the period	(1,534,000)	(599,000)
Balance, end of the period	4,447,000	1,097,000	807,000
Research and development
Research and development	138,946,000	92,508,000	56,804,000
Advertising
Advertising expense	$ 1,100,000	$ 400,000	$ 300,000
Employee Stock Options
Share-based compensation
Expected life	6 years 3 months	6 years 3 months	6 years 2 months 23 days