Other Current Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Other Current Liabilities [Line Items]
Other Current Liabilities	$ 20,741	$ 17,962
Salaries and related expenses
Other Current Liabilities [Line Items]
Other Current Liabilities	4,379	4,086
Reserve for Purchase and Other Contractual Commitments
Other Current Liabilities [Line Items]
Other Current Liabilities	3,577	345
Selling and marketing expense accrual
Other Current Liabilities [Line Items]
Other Current Liabilities	2,834	721
Accrued royalties
Other Current Liabilities [Line Items]
Other Current Liabilities	2,014	1,783
Legal and professional fees
Other Current Liabilities [Line Items]
Other Current Liabilities	1,872	2,776
Returned product liability
Other Current Liabilities [Line Items]
Other Current Liabilities	1,204	1,087
Severance
Other Current Liabilities [Line Items]
Other Current Liabilities	989	1,006
Allowance for product returns
Other Current Liabilities [Line Items]
Other Current Liabilities	871	852
Manufacturing and technology transfer services
Other Current Liabilities [Line Items]
Other Current Liabilities	616	2,577
Other
Other Current Liabilities [Line Items]
Other Current Liabilities	$ 2,385	$ 2,729