7. PROPERTY, PLANT AND EQUIPMENT

The following is a summary of property, plant and equipment and the estimated useful lives used in the computation of depreciation and amortization:



	Number of Years		August 31, 2013		September 1, 2012
Land		—	$	20,471	$	16,039
Building and improvements		40		123,675		81,266
Leasehold improvements		The lesser of lease term or 31.5		4,971		3,993
Furniture, fixtures and equipment		3 - 20		131,981		120,724
Automobiles		5		435		447
Computer systems, equipment and software		3 - 5		225,788		174,349
				507,321		396,818
Less: accumulated depreciation and amortization				255,785		222,221
Total			$	251,536	$	174,597

The amount of capitalized interest, net of accumulated amortization, included in property, plant and equipment was $931 and $973 at August 31, 2013 and September 1, 2012, respectively.

Depreciation expense was $36,169, $24,676 and $21,470 for the fiscal years ended August 31, 2013, September 1, 2012, and August 27, 2011, respectively.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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