BALANCE SHEET COMPONENTS: (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounts receivable, net:
Accounts receivable	$ 59,155,000	$ 48,772,000
Less: allowance for doubtful accounts	(639,000)	(557,000)
Accounts receivable, net	58,516,000	48,215,000
Inventories:
Raw materials	6,240,000	5,983,000
Work-in-process	4,667,000	4,705,000
Finished goods	32,411,000	14,267,000
Inventories	43,318,000	24,955,000
Deferred taxes and other current assets:
Prepaid expenses	5,346,000	2,406,000
Forward contracts receivable	2,942,000
Deferred taxes	3,813,000	1,126,000
VAT receivable	3,000,000	1,919,000
Other	515,000	1,922,000
Deferred taxes and other current assets	15,616,000	7,373,000
Property and equipment
Property and equipment, gross	110,683,000	70,921,000
Less: Accumulated depreciation and amortization	(48,308,000)	(34,115,000)
Property and equipment, net	62,375,000	36,806,000
Deferred taxes and other long-term assets:
Equity investments in private companies	4,424,000	3,000,000
Deferred taxes	2,083,000	1,316,000
Restricted cash	3,388,000	3,317,000
Other assets	524,000	656,000
Deferred taxes and other long-term assets	10,419,000	8,289,000
Accrued liabilities:
Payroll and related expenses	37,067,000	15,018,000
Accrued expenses	10,104,000	6,026,000
Product warranty liability	4,447,000	1,097,000	807,000
Forward contracts payable		1,149,000
Development project	640,000	3,000,000
Other	5,621,000	4,801,000
Accrued liabilities	57,879,000	31,091,000
Other long-term liabilities:
Income tax payable	8,838,000	3,365,000
Deferred rent	2,797,000	2,849,000
Other long-term liabilities	11,635,000	6,214,000
Computer equipment and software
Property and equipment
Property and equipment, gross	80,203,000	49,157,000
Furniture and fixtures
Property and equipment
Property and equipment, gross	3,890,000	2,865,000
Leasehold improvements
Property and equipment
Property and equipment, gross	$ 26,590,000	$ 18,899,000