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Fair Value Measurement (Details Textual) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Fair Value Measurement (Textual) [Abstract]
Carrying value of long term debt	$ 821,498,000	$ 832,233,000
Fair value of long term debt	$ 834,400,000	$ 801,000,000

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- Details

Name:	gtn_FairValueMeasurementTextualAbstract
Namespace Prefix:	gtn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtLongtermAndShorttermCombinedAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant