Commitments and Contingencies Lease Commitments MRV leases certain facilities and equipment under non-cancelable lease agreements expiring in various years through 2020. Following are the aggregate minimum annual lease payments under leases in effect as of December 31, 2014 (in thousands): Year ending December 31, Operating leases 2015 $ 2,302 2016 1,429 2017 1,072 2018 598 2019 413 Thereafter 118 Total $ 5,932 Rental expense under non-cancelable operating lease agreements for the years ended December 31, 2014 , 2013 and 2012 , was $2.5 million , $2.4 million and $2.7 million , respectively. On October 8, 1996, the Company entered into a lease amendment for the lease of office space located in Chatsworth, CA. The current term of the lease is for 10 years through April 1, 2017, with no option to extend the lease term. The remaining lease payments over the current term will approximate $0.5 million . Pursuant to the amendment, the Company was granted an improvement allowance of $70,000 which is being amortized as a reduction to rent expense over the life of the lease. On June 30, 2005 the Company entered into a lease amendment as successor-in-interest to Luminent, Inc. for the lease of office and warehouse space located in Chatsworth, CA. The current term is through December 31, 2015, with an option to extend the lease five years . The remaining lease payments will approximate $0.2 million . On June 30, 2008, the Company entered into a lease amendment for the lease of office space located in Rome, Italy. The Company exercised its right to extend the lease through January 31, 2020. The remaining lease payments over the current term will approximate $1.2 million . On July 1, 2008, the Company entered into lease amendment for the lease of office space at another facility located in Rome, Italy. The Company exercised its right to extend the lease through January 31, 2020. The remaining lease payments over the current term will approximate $1.1 million . On December 16, 2009, the Company entered into a lease amendment w