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Acquisitions and Dispositions - Stainless - Additional Information (Details) (Stainless [Member], USD $)
0 Months Ended 12 Months Ended
Sep. 13, 2013
Dec. 31, 2014
Stainless [Member]
   
Business Acquisition [Line Items]    
Purchase price of entities to be acquired $ 15,300,000nxst_PurchasePriceOfEntitiesToBeAcquired
/ us-gaap_BusinessAcquisitionAxis
= nxst_StainlessBroadcastingMember
 
Deposit paid upon signing an agreement to acquire a business 200,000us-gaap_OtherPaymentsToAcquireBusinesses
/ us-gaap_BusinessAcquisitionAxis
= nxst_StainlessBroadcastingMember
 
Acquisition related costs   $ 400,000us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= nxst_StainlessBroadcastingMember