GOODWILL AND INTANGIBLE ASSETS: (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Changes in the carrying amount of goodwill
Balance at the beginning of the period	$ 132,885,000
Balance at the end of the period	132,885,000	132,885,000
Intangible assets
Gross carrying value of amortizable intangible assets	36,563,000	35,929,000
Accumulated Amortization	(20,429,000)	(11,341,000)
Net carrying value of amortizable intangible assets	16,134,000	24,588,000
Gross carrying value of intangible assets		36,998,000
Net carrying value of intangible assets	16,134,000	25,657,000
Amortization expense of intangible assets	9,300,000	9,400,000	200,000
Estimated future amortization expenses from amortizable intangible assets
2013	9,679,000
2014	3,824,000
2015	1,060,000
2016	786,000
2017 and thereafter	785,000
Net carrying value of amortizable intangible assets	16,134,000	24,588,000
IPR&D
Intangible assets
Carrying Value		1,069,000
Net carrying value of intangible assets		1,069,000
Licensed technology
Intangible assets
Gross carrying value of amortizable intangible assets	946,000	946,000
Accumulated Amortization	(946,000)	(874,000)
Net carrying value of amortizable intangible assets		72,000
Estimated future amortization expenses from amortizable intangible assets
Net carrying value of amortizable intangible assets		72,000
Developed technology
Intangible assets
Gross carrying value of amortizable intangible assets	23,132,000	22,063,000
Accumulated Amortization	(14,695,000)	(7,174,000)
Net carrying value of amortizable intangible assets	8,437,000	14,889,000
Estimated future amortization expenses from amortizable intangible assets
Net carrying value of amortizable intangible assets	8,437,000	14,889,000
Customer relationships
Intangible assets
Gross carrying value of amortizable intangible assets	10,956,000	10,956,000
Accumulated Amortization	(3,328,000)	(1,571,000)
Net carrying value of amortizable intangible assets	7,628,000	9,385,000
Estimated future amortization expenses from amortizable intangible assets
Net carrying value of amortizable intangible assets	7,628,000	9,385,000
Customer contract
Intangible assets
Gross carrying value of amortizable intangible assets	1,529,000	1,529,000
Accumulated Amortization	(1,460,000)	(1,287,000)
Net carrying value of amortizable intangible assets	69,000	242,000
Estimated future amortization expenses from amortizable intangible assets
Net carrying value of amortizable intangible assets	69,000	242,000
Backlog
Intangible assets
Gross carrying value of amortizable intangible assets		435,000
Accumulated Amortization		$ (435,000)