Quarterly report pursuant to Section 13 or 15(d)

Summary of Business Acquisitions and Asset Purchases (Detail)

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Summary of Business Acquisitions and Asset Purchases (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Feb. 07, 2014
KDIS-FM, Little Rock Arkansas and KRDY-AM, San Antonio, Texas (business acquisition)
Jan. 10, 2014
Eagle Publishing (business acquisition)
Mar. 31, 2014
Purchase of Internet domains (asset purchases)
Business Acquisition [Line Items]        
Business acquisition, total cost $ 12,785 $ 1,984 $ 10,628 $ 173