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Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash paid during the period for:
Interest	$ 1,559	$ 2,788	$ 4,504
Income taxes	6,999	3,202	4,664
Non-cash transactions:
Barter revenue	4,188	4,369	4,554
Barter expense	3,894	4,138	4,541
Acquisition of property and equipment	$ 99	$ 286	$ 137

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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- Definition

The amount of fixed assets that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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