Subsequent Events (Details) (USD $)			0 Months Ended			0 Months Ended
	May 30, 2012	Jun. 10, 2014 Subsequent Event	Jun. 10, 2014 Senior Secured Term Loan Subsequent Event	Jun. 10, 2014 Senior Secured Revolving Credit Facility Subsequent Event	Jun. 10, 2014 Letter of Credit Subsequent Event	Jun. 10, 2014 Base Rate Senior Secured Term Loan Subsequent Event	Jun. 10, 2014 LIBO Rate Senior Secured Term Loan Subsequent Event	Jun. 10, 2014 WBLS-FM and WLIB-AM Subsequent Event closing	Jun. 16, 2014 Digonex Subsequent Event
Subsequent Event [Line Items]
Principal amount	$ 82,200,000		$ 185,000,000.0
Maximum borrowing capacity under credit facility				20,000,000.0	5,000,000.0
Uncommitted increase, principal amount				20,000,000.0
Proceeds from issuance of debt			109,000,000
Long-term debt held in escrow			76,000,000
Fair value of amount outstanding				13,000,000
Payments to acquire business								55,000,000
Expected future payments related to acquisition								76,000,000
Interest rate during period (as a percent)	4.10%	1.00%
Variable rate floor (as a percent)						2.00%	1.00%
Credit agreement bear interest rate (as a percent)						3.75%	4.75%
Consideration transferred								131,000,000	3,000,000
Liabilities assumed									6,900,000
Number of closings								2
Equity interest in subsidiaries transferred (as a percent)								49.90%
Ownership interest percentage convertible holding rights (as a percent)									51.00%
Future consideration expected to be transferred									$ 2,000,000
Expected ownership percentage of convertible holding rights after future investment (as a percent)									66.00%