4. Commitments and contingencies Operating lease obligations The Company has non-cancelable operating leases for its facilities through fiscal year 2022. Future minimum lease payments, net of future minimum lease income, under operating leases as of April 3, 2016 are as follows: Fiscal Years Ending: Amount (in thousands) 2017 5,001 2018 6,427 2019 6,603 2020 5,282 2021 1,393 Beyond 516 Total $ 25,222 The Companys lease agreements provide for rental payments which have certain lease incentives and graduated rental payments. As a result, the rent expense is recognized on a straight-line basis over the term of the lease. The Companys rental expense under operating leases net of the rent income from subleases, was approximately $4.9 million, $5.2 million and $5.6 million for fiscal years 2016, 2015 and 2014, respectively. The Companys rental income from sublease was approximately $1.5 million and $0.3 million for fiscal years 2016 and 2015. No rental income from sublease was recorded for fiscal year 2014. Purchase commitments The Company has non-cancelable purchase commitments with its foundry vendors. As of April 3, 2016, the Company had future minimum payments of $18.1 million under the purchase commitments over a period of less than 12 months. 401(k) savings plan In November 2004, the Company established a defined contribution savings plan under Section 401(k) of the Internal Revenue Code. This plan covers substantially all employees who meet minimum age and service requirements and allows participants to defer a portion of their annual compensation on a pretax basis. The Company may make contributions to the plan at the discretion of the Board of Directors. During the fiscal years 2016, 2015 and 2014, the Company contributed $0.5 million, $0.2 million and $43,000 to the plan, respectively. Legal proceedings and contingencies From time to time the Company is involved in various disputes and litigation matters that arise in the ordinary course of our business, including disputes and lawsuits related to intellect