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Commitments and Contingencies | 12 Months Ended
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Mar. 28, 2015
Commitments and Contingencies [Abstract] |
Commitments and Contingencies | 13. Commitments and Contingencies Facilities and Equipment Under Operating and Capital Lease Agreements We currently own our corporate headquarters, our UK headquarters, and select surrounding properties. W e lease certain of our other facilities and certain equipment under operating lease agreements, some of which have renewal options. Certain of these arrangements provide for lease payment increases based upon future fair market rates. As of May 1, 201 5, our principal facilities are located in Austin, Texas and Edinburgh, Scotland, United Kingdom. The Company closed operations in Tucson, Arizona during fiscal year 2013, which included 28,000 square feet of leased office space which was primarily occupied by engineering personnel. The term of this lease extends through May 2015. Total rent expense under operating leases was approximately $4.0 million, $2.8 million, and $3.2 million, for fiscal years 2015, 2014, and 2013, respectively. Sublease rental income was $0.1 million, $0.1 million, and $0.1 million, for fiscal years 2015, 2014, and 2013, respectively. As of March 28, 2015, there was equipment held under a capital lease with a cost basis of $1.1 million. The Company has recorded accumulated depreciation related to this equipment of $0.1 million as of March 28, 2015. The future minimum rental commitments under the capital lease are approximately $246 thousand for fiscal year 2016, $246 thousand for fiscal year 2017, $245 thousand for fiscal year 2018 and $245 thousand for fiscal year 2019. The aggregate minimum future rental commitments under all operating leases, net of sublease income for the following fiscal years are (in thousands):
|  | Facilities |  |  | Subleases |  |  | Net Facilities Commitments |  |  | Equipment Commitments |  |  | Total Commitments
2016 | $ | 4,388 |  | $ | 27 |  | $ | 4,361 |  | $ | 26 |  | $ | 4,387
2017 |  | 3,914 |  |  | - |  |  | 3,914 |  |  | 22 |  |  | 3,936
2018 |  | 2,074 |  |  | - |  |  | 2,074 |  |  | 9 |  |  | 2,083
2019 |  | 1,083 |  |  | - |  |  | 1,083 |  |  | 4 |  |  | 1,087
2020 |  | 501 |  |  | - |  |  | 501 |  |  | - |  |  | 501
Thereafter |  | 193 |  |  | - |  |  | 193 |  |  | - |  |  | 193
Total minimum lease payment | $ | 12,153 |  | $ | 27 |  | $ | 12,126 |  | $ | 61 |  | $ | 12,187
Wafer, Assembly, Test and Other Purchase Commitments We rely primarily on third-party foundries for our wafer manufacturing needs. As of March 28, 201 5, we had agreements with multiple foundries for the manufacture of wafers. On December 22, 2011, the Company entered into a $10 million Capacity Investment and Loading Agreement with STATS ChipPAC Ltd (Supplier Agreement) in order to secure assembly and test capacity for certain products. As part of the agreement, we we re eligible to receive rebates on our purchases up to the full amount of the specified $10 million in the Supplier Agreement upon our meeting certain purchase volume milestones. As of March 28, 2015, the full amount relat ed to the agreement rebates had been received. Other than the previously mentioned agreement, our foundry agreements do not have volume purchase commitments and primarily provide for purchase commitments based on purchase orders, with the exception o f a few "take or pay" clauses included in vendor contracts that are immaterial at March 28, 2015. Cancellation fees or other charges may apply and are generally dependent upon whether wafers have been started or the stage of the manufacturing process at which the notice of cancellation is given. As of March 28, 201 5, we had foundry commitments of $98.2 million. In addition to our wafer supply arrangements, we contract with third-party assembly vendors to package the wafer die into finished products. Assembly vendors provide fixed-cost-per-unit pricing, as is common in the semiconductor industry. We had non-cancelable assembly purchase orders with numerous vendors totaling $5.5 million at March 28, 201 5. Test vendors provide fixed-cost-per-unit pricing, as is common in the semiconductor industry. Our total non-cancelable commitment for outside test services as of March 2 8, 201 5 was $10.2 million. Other purchase commitments primarily relate to multi-year tool commitments, and were $4 6.8 million at March 28, 2015.

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