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6. PROPERTY AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property and equipment, gross	$ 619,864	$ 582,070
Accumulated depreciation and amortization	(401,317)	(365,510)
Property and equipment, net	218,547	216,560
Land
Property and equipment, gross	250	250
Medical equipment
Property and equipment, gross	304,592	293,169
Computer and office equipment, furniture and fixtures
Property and equipment, gross	88,946	80,270
Software development costs
Property and equipment, gross	5,108	3,376
Leasehold improvements
Property and equipment, gross	186,561	172,914
Equipment under capital lease
Property and equipment, gross	$ 34,407	$ 32,091

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

-Paragraph 1

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-Publisher SEC

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X

- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 360

-SubTopic 10

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