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Property, Plant and Equipment | 12 Months Ended
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Jan. 26, 2020
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Property, Plant and Equipment The following is a summary of property and equipment:
(in thousands) | Estimated Useful Lives |  | January 26, 2020 |  | January 27, 2019
Land |  |  | $ | 12,143 |  |  | $ | 11,314 |
Buildings | 7 to 39 years |  | 35,801 |  |  | 32,229 |
Leasehold improvements | 5 to 12 years |  | 10,148 |  |  | 9,863 |
Machinery and equipment | 3 to 8 years |  | 196,270 |  |  | 185,045 |
Computer hardware and software | 3 to 13 years |  | 68,748 |  |  | 67,746 |
Furniture and office equipment | 5 to 7 years |  | 5,236 |  |  | 5,364 |
Construction in progress |  |  | 10,859 |  |  | 2,960 |
Property, plant and equipment, gross |  |  | 339,205 |  |  | 314,521 |
Less: accumulated depreciation and amortization |  |  | (214,787 | ) |  | (196,033 | )
Property, plant and equipment, net |  |  | $ | 124,418 |  |  | $ | 118,488 |
As of January 26, 2020, and January 27, 2019, construction in progress consisted primarily of machinery and equipment awaiting completion of installation and being placed in service. Depreciation expense was $23.4 million, $23.0 million, and $21.1 million in fiscal years 2020, 2019, and 2018, respectively.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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