14  Commitments and Contingencies Leases. We have entered into noncancelable operating leases for our facilities. In January2014, we entered into a lease, commencing July1, 2014, for a new facility in Winter Springs, Florida owned by Susi, LLC, an entity controlled by our president and CEO, Roger Susi. Pursuant to the terms of our lease for this property, the monthly base rent is $32,649, adjusted annually for changes in the consumer price index. The term of the lease expires on May31, 2019. The lease will automatically renew for two successive terms of five years each beginning in 2019 and again in 2024, and thereafter, will be renewed for successive terms of one year each. Rent expense for the years ended December31, 2016, 2015 and 2014 was $405,081, $400,807 and $284,210, respectively. Minimum lease payments for each of our operating leases are even throughout their respective lease term. Future minimum lease payments under noncancelable operating leases as of December31, 2016 are as follows: Operating Leases 2017 $ 394,081 2018 393,417 2019 163,242 2020  2021  Thereafter  Total minimum lease payments $ 950,740 Purchase commitments. We had various purchase orders for goods or services totaling approximately $3,683,481 at December31, 2016. An insignificant amount related to these purchase orders has been recognized in our balance sheet. Indemnifications. Under our amended and restated bylaws, we have agreed to indemnify our officers and directors for certain events or occurrences arising as a result of the officer or director serving in such capacity. We have a director and officer liability insurance policy that limits our exposure under these indemnifications and enables us to recover a portion of any future loss arising out of them. In addition, in the normal course of business, we enter into contracts that contain indemnification clauses whereby the Company indemnifies our customers against damages associated with product failures. We have determined that these agreements fall within the scope of