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Property and Equipment (Tables) | 6 Months Ended
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Jun. 29, 2019
Property, Plant and Equipment [Abstract] |
Schedule of Property, Plant and Equipment | Property and equipment are stated at cost. Depreciation is calculated using the straight-line method over estimated useful lives as follows:
| Useful Lives
Aircraft and components | 10 to 20 years
Buildings | 39 years
Building improvements | 7 to 15 years
Computer equipment | 2 to 6 years
Demonstration units | 3 years
Furniture and office equipment | 2 to 6 years
Leasehold improvements | Lesser of useful life or term of lease
Machinery and equipment | 5 to 10 years
Tooling | 3 years
Vehicles | 5 years
Property and equipment, net, consists of the following (in thousands):
| June 29, 2019 |  | December 29, 2018
Building and building improvements | $ | 91,595 |  |  | $ | 88,449 |
Machinery and equipment | 58,077 |  |  | 54,525 |
Land | 40,216 |  |  | 23,762 |
Aircraft and vehicles | 25,595 |  |  | 25,555 |
Computer equipment | 18,649 |  |  | 16,582 |
Leasehold improvements | 17,167 |  |  | 16,428 |
Tooling | 14,742 |  |  | 14,212 |
Furniture and office equipment | 10,670 |  |  | 10,459 |
Demonstration units | 474 |  |  | 470 |
Construction-in-progress (CIP) | 32,125 |  |  | 13,320 |
Total property and equipment | 309,310 |  |  | 263,762 |
Accumulated depreciation and amortization | (106,500 | ) |  | (97,790 | )
Property and equipment, net | $ | 202,810 |  |  | $ | 165,972 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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