NOTE 15  COMMITMENTS AND CONTINGENCIES Operating Lease We lease administrative office space in Boca Raton, Florida pursuant to a non-cancelable operating lease that commenced on July 1, 2013 and originally provided for a 63-month term. On February 18, 2015, we entered into an agreement with the same lessors to lease additional administrative office space in the same location, pursuant to an addendum to such lease. In addition, on April 26, 2016, we entered into an agreement with the same lessors to lease additional administrative office space in the same location. This agreement was effective beginning May 1, 2016 and extended the original expiration of the lease term to October 31, 2021. On October 4, 2016, we entered into an agreement with the same lessors to lease additional administrative office space in the same location, pursuant to an addendum to such lease. This addendum is effective beginning November 1, 2016. The rental expense related to our current lease during the three months ended June 30, 2018 and 2017 was approximately $257,000 and $265,000, respectively. The rental expense related to our current lease during both the six months ended June 30, 2018 and 2017 was $515,000. As of June 30, 2018, future minimum rental payments on non-cancelable operating leases are as follows: Years Ending December 31, 2018 (6 months) $ 499,831 2019 1,094,116 2020 1,113,069 2021 943,127 2022  Total minimum lease payments $ 3,650,143