Note 1 - Summary of Significant Accounting Policies (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012
Number of Operating Segments	2
Number of Reportable Segments	1
Restricted Cash and Cash Equivalents (in Dollars)	$ 4,800,000
Finite-Lived Intangible Asset, Useful Life	16 years
Building [Member]
Property, Plant and Equipment, Useful Life	40 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	30 years
Company's Responsibility For Workers' Compensation And Auto And General Liability Claims [Member] | Minimum [Member]
Supplementary Insurance Information, Liability for Future Policy Benefits, Losses, Claims and Loss Expense Reserves (in Dollars)	100,000
Company's Responsibility For Workers' Compensation And Auto And General Liability Claims [Member] | Maximum [Member]
Supplementary Insurance Information, Liability for Future Policy Benefits, Losses, Claims and Loss Expense Reserves (in Dollars)	$ 350,000
Minimum [Member] | Network Affiliations, Advertiser, And Programming Relationships [Member]
Finite-Lived Intangible Asset, Useful Life	1 year
Minimum [Member] | Internal Use Software [Member]
Finite-Lived Intangible Asset, Useful Life	5 years
Maximum [Member] | FCC Broadcast Licenses [Member]
Broadcast Licenses, Term	8 years
Maximum [Member] | Network Affiliations, Advertiser, And Programming Relationships [Member]
Finite-Lived Intangible Asset, Useful Life	25 years
Maximum [Member] | Internal Use Software [Member]
Finite-Lived Intangible Asset, Useful Life	7 years
CBS Network Affiliation Agreements - Weighted-Average Time Until Renewal Is Due [Member]
Network Affiliation Agreements, Time Until Renewal Is Due	two years
Single ABC Station [Member]
Network Affiliation Agreements, Time Until Renewal Is Due	one and one-half years
NBC [Member]
Network Affiliation Agreements, Time Until Renewal Is Due	three years