The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived 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, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived 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, furniture and fixtures, and computer equipment.

+ References+ Details

PROPERTY AND EQUIPMENT: (Details) (USD $)	12 Months Ended
PROPERTY AND EQUIPMENT: (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property and equipment
Property and equipment, gross	$ 828,866,000	$ 630,428,000
Less: accumulated depreciation	(389,153,000)	(348,907,000)
Property and equipment, net	439,713,000	281,521,000
Capital lease depreciation expense	3,500,000	3,800,000	4,000,000
Land and improvements
Property and equipment
Property and equipment, gross	33,932,000	20,303,000
Real estate held for development and sale
Property and equipment
Property and equipment, gross	56,419,000	55,517,000
Buildings and improvements
Property and equipment
Property and equipment, gross	135,162,000	98,283,000
Buildings and improvements \| Minimum
Property and equipment
Estimated useful lives	10 years
Buildings and improvements \| Maximum
Property and equipment
Estimated useful lives	30 years
Station equipment
Property and equipment
Property and equipment, gross	425,823,000	306,041,000
Station equipment \| Minimum
Property and equipment
Estimated useful lives	5 years
Station equipment \| Maximum
Property and equipment
Estimated useful lives	10 years
Office furniture and equipment
Property and equipment
Property and equipment, gross	41,134,000	37,305,000
Office furniture and equipment \| Minimum
Property and equipment
Estimated useful lives	5 years
Office furniture and equipment \| Maximum
Property and equipment
Estimated useful lives	10 years
Leasehold improvements
Property and equipment
Property and equipment, gross	18,362,000	14,495,000
Leasehold improvements \| Minimum
Property and equipment
Estimated useful lives	10 years
Leasehold improvements \| Maximum
Property and equipment
Estimated useful lives	30 years
Automotive equipment
Property and equipment
Property and equipment, gross	20,634,000	12,578,000
Automotive equipment \| Minimum
Property and equipment
Estimated useful lives	3 years
Automotive equipment \| Maximum
Property and equipment
Estimated useful lives	5 years
Capital leased assets
Property and equipment
Property and equipment, gross	79,126,000	79,259,000
Construction in progress
Property and equipment
Property and equipment, gross	$ 18,274,000	$ 6,647,000