Acquisitions (Details) (KMTR TV [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Nov. 30, 2012
Summary of acquired consolidated assets and assumed liabilities based on estimated fair values
Property, plant and equipment	$ 3,358
Leasehold interests liability	(100)
Net assumed liabilities	(92)	(92)
Recognized value of net assets (other than goodwill) acquired	7,956
Deferred tax asset for $90 of taxable temporary differences	33
Goodwill (tax deductible)	409
Consideration paid for the acquiree	8,398
Network affiliation agreement [Member]
Summary of acquired consolidated assets and assumed liabilities based on estimated fair values
Intangible assets	2,180
FCC licenses [Member]
Summary of acquired consolidated assets and assumed liabilities based on estimated fair values
Intangible assets (indefinite life, not subject to amortization)	1,500
Advertiser relationships [Member]
Summary of acquired consolidated assets and assumed liabilities based on estimated fair values
Intangible assets	1,000
Programming [Member]
Summary of acquired consolidated assets and assumed liabilities based on estimated fair values
Intangible assets	$ 110