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Property and Equipment Property and Equipment (Details) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Jan. 26, 2016 ft² | Apr. 02, 2016 USD ($) | Jan. 02, 2016 USD ($)
Property, Plant and Equipment [Line Items] |  |  |
Property Plant and Equipment, Occupied Square Feet | ft² | 70,700 |  |
Property, Plant and Equipment, Transfers and Changes |  | $ 6,200 |
Property, plant and equipment, gross |  | 198,065 | $ 197,938
Accumulated depreciation and amortization |  | (64,803) | (65,472)
Property and equipment, net |  | 133,262 | 132,466
Computer equipment |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross |  | 42,361 | 42,460
Building and building improvements |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross |  | 85,296 | 78,877
Land |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross |  | 23,737 | 23,738
Computer equipment |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross |  | 14,608 | 15,023
Tooling |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross |  | 12,893 | 13,079
Leasehold improvements |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross |  | 7,299 | 7,734
Furniture and office equipment |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Capital Leased Assets, Gross |  | 400 | 400
Property, plant and equipment, gross |  | 8,939 | 8,885
Demonstration units |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross |  | 984 | 973
Vehicles |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross |  | 45 | 45
Construction-in-progress |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross |  | 1,903 | $ 7,124
Capital Lease Obligations [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Accumulated depreciation and amortization |  | $ (300) |

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