8.      Deferred Rent

On August 7, 2015, the Company signed a lease for 21,697 square feet of mixed office and manufacturing space in Alameda, CA. The term of the lease is 76 months plus 6 months pre-commencement date for tenant improvement construction. The total cost of the lease is $3.0 million which is being amortized over 82 months at approximately $37,000 per month. As of December 31, 2016, the landlord had paid for $0.9 million in tenant improvements. The tenant improvements cost has been included in owned assets and deferred rent and is being amortized over the life of the lease. Net deferred rent expense for the periods ended December 31, 2016 and 2015 was $29,000 and $163,000, respectively. The December 31, 2016 short term deferred rent balance of $177,000 is included in current liabilities whereas the December 31, 2015 balance of negative $38,000 was included in prepaid expenses and other current assets. The remaining liability of $963,000 and $1,071,000 at December 31, 2016 and 2015, respectively, is classified as long term deferred rent.