Property and equipment

12 Months Ended

Dec. 31, 2011

6. Property and equipment

Property and equipment were comprised of the following:


	December 31,
	2011			2010
Land	$	23,004		$	23,182
Buildings		34,173			33,937
Leasehold improvements		1,266,499			1,106,935
Equipment and information systems		1,269,343			1,107,778
New center and capital asset projects in progress		144,124			38,721

		2,737,143			2,310,553
Less accumulated depreciation and amortization		(1,304,492	)		(1,139,745	)

	$	1,432,651		$	1,170,808

Depreciation and amortization expense on property and equipment was $249,060, $218,666 and $213,657 for 2011, 2010 and 2009, respectively.

Interest on debt incurred during the development of new centers and other capital asset projects is capitalized as a component of the asset cost based on the respective in-process capital asset balances. Interest capitalized was $4,887, $2,621 and $3,627 for 2011, 2010 and 2009, 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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