11. Commitments and Contingencies Lease Arrangements We lease facilities and equipment under non-cancelable operating lease arrangements with various expiration dates through fiscal 2020. Certain of these arrangements provide for free or escalating rent payment provisions and for options to renew, which could increase future minimum lease payments if exercised. We account for rent of our facilities on a straight-line basis over the respective lease terms. Rent expense was $3.1 million, $2.9 million and $2.0 million in fiscal 2015, 2014 and 2013, respectively. Future minimum payments under our operating leases agreements are as follows (in thousands): Fiscal Years Ending February 28/29 2016 $ 2,229 2017 2,068 2018 1,586 2019 735 2020 406 $ 7,024 Unrecognized Purchase Commitments We have future unrecognized contractual obligations, primarily for purchase commitments of goods and services related to inventory, advertising and marketing, royalty and licensing arrangements and data center operations. Future minimum payments for these unrecognized purchase commitments are as follows (in thousands): Fiscal Years Ending February 28/29 2016 $ 14,094 2017 7,662 2018 2,414 2019 445 $ 24,615 Legal Matters In late 2011, following a voluntary internal review of our compliance with U.S. export control and sanctions laws, our management team became aware that certain of our physical appliances had been sold indirectly into embargoed countries via our distributors and resellers, potentially in violation of U.S. export control and economic sanctions laws. In addition, certain of our solutions incorporate encryption components and may be exported from the U.S. only with the required approvals; in the past, we may have exported products prior to receiving these required authorizations. After completion of a comprehensive internal investigation conducted by outside counsel, we submitted voluntary disclosures regarding these matters to the U.S. Commerce Department, Bureau of Industry and Security ( BIS ), and to the U.S. Treasury Depa