LEASE AMENDMENTS	6 Months Ended
LEASE AMENDMENTS	Jun. 30, 2011
LEASE AMENDMENTS
LEASE AMENDMENTS	NOTE 13. LEASE AMENDMENTS In June 2011, the Company entered into amendments to its existing leases for the Company's premises located at 1330 and 1360 O'Brien Drive, Menlo Park, California, consisting of approximately 46,000 rentable square feet. The lease amendments extend the term of the existing leases for twelve months, from February 1, 2012 through January 31, 2013. All material provisions of the leases remain the same, except that the Company may not extend either of the lease terms. The lease for the Company's premises located at 1430 O'Brien Drive, consisting of approximately 9,000 rentable square feet, was not amended by the lease amendments, and has a term through January 31, 2012.

General description of lessee's leasing arrangements including: (1) The basis on which contingent rental payments are determined, (2) The existence and terms of renewal or purchase options and escalation clauses, (3) Restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) Rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

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