Document and Entity Information Document Information [Table] Document Information [Line Items] Document Type Document Quarterly Report Document Period End Date Document Transition Report Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Document Fiscal Year Focus Document Fiscal Period Focus Current Fiscal Year End Date Amendment Flag CONDENSED CONSOLIDATED BALANCE SHEETS Statement [Table] Class of Stock [Axis] Class of Stock [Domain] Class A Common Stock Class B Common Stock Statement [Line Items] Assets [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Short-Term Investments Short-term investments Accounts Receivable, Net, Current Accounts receivable, net Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Contract Receivable Barter transactions Assets, Current Total current assets Property, Plant and Equipment, Gross Property and equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less accumulated depreciation Property, Plant and Equipment, Net Net property and equipment Other Assets, Noncurrent [Abstract] Other assets: Indefinite-Lived License Agreements Broadcast licenses, net Goodwill Other Assets, Noncurrent Other intangibles, right of use assets, deferred costs and investments, net Assets Total assets Liabilities and Equity [Abstract] Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Employee-related Liabilities, Current Accrued payroll and payroll taxes Dividends Payable, Current Dividend payable Accrued Liabilities, Current Other accrued expenses Deferred Revenue, Current Barter transactions Liabilities, Current Total current liabilities Deferred Tax Liabilities, Net, Noncurrent Deferred income taxes Other Liabilities, Noncurrent Other liabilities Liabilities Total liabilities Commitments and contingencies Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Common Stock, Value, Issued Common stock Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained earnings Treasury Stock, Value Treasury stock Stockholders' Equity Attributable to Parent Balance Balance Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS Net operating revenue Revenue from Contract with Customer, Including Assessed Tax Operating Expenses [Abstract] Operating expenses : Operating Costs and Expenses Station operating expenses General and Administrative Expense Corporate general and administrative Other Operating Income (Expense), Net Other operating (income) expense, net Operating Income (Loss) Operating income Interest Expense Interest expense Investment Income, Interest Interest income Other Nonoperating Income (Expense) Other income Other income (expense) Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income before income tax expense Income Tax Expense (Benefit), Continuing Operations [Abstract] Income tax expense Income tax expense (benefit) Income tax expense Net Income (Loss) Attributable to Parent Net (loss) income Net income (loss) Net income (loss) Earnings Per Share, Basic [Abstract] Basic earnings (loss) per share Earnings Per Share, Basic Basic earnings (loss) per share Earnings Per Share, Diluted [Abstract] Diluted earnings (loss) per share Earnings Per Share, Diluted Diluted earnings (loss) per share Weighted Average Number of Shares Outstanding, Basic Denominator for basic earnings per share - weighted average shares Weighted average common shares Weighted Average Number of Shares Outstanding, Diluted Denominator for diluted earnings per share - adjusted weighted-average shares and assumed conversions Weighted average common and common equivalent shares Common Stock, Dividends, Per Share, Declared Dividends declared per share CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Equity Components [Axis] Equity Component [Domain] Parent [Member] Common Stock Additional Paid-in Capital Retained Earnings Treasury Stock Shares, Issued Balance, shares Balance, shares Stock Issued During Period, Value, Conversion of Convertible Securities Conversion of shares from Class B to Class A Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion of shares from Class B to Class A (in shares) Dividends, Common Stock, Cash Dividends declared per common share Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition Compensation expense related to restricted stock awards Treasury Stock, Value, Acquired, Cost Method Purchase of shares held in treasury Stock Issued During Period, Value, Employee Benefit Plan 401(k) plan contribution CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Payments to Acquire Short-Term Investments Purchase of Short-term investments Proceeds from Sale of Short-Term Investments Redemption of Short-term investments Payments to Acquire Property, Plant, and Equipment Acquisition of property and equipment The cash outflow associated with the acquisition of broadcast properties. Payments To Acquire Broadcast Properties Acquisition of broadcast properties Proceeds from Sale of Productive Assets Proceeds from sale and disposal of assets Proceeds from Insurance Settlement, Investing Activities Proceeds from insurance claims Payments for (Proceeds from) Other Investing Activities Other investing activities Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Payments of Ordinary Dividends, Common Stock Cash dividends paid The cash outflow for the purchase of an equity stock that has been previously issued by the entity. Payments For Purchase Of Treasury Stock Purchase of treasury shares Net Cash Provided by (Used in) Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Continuing Operations Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Recent Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Recent Accounting Pronouncements Revenue Revenue from Contract with Customer [Text Block] Revenue Broadcast Licenses, Goodwill and Other Intangible Assets Intangible Assets Disclosure [Text Block] Broadcast Licenses, Goodwill and Other Intangible Assets Common Stock and Treasury Stock Stockholders' Equity Note Disclosure [Text Block] Common Stock and Treasury Stock Leases Lessee, Operating Leases [Text Block] Leases Acquisitions and Dispositions Business Combination Disclosure [Text Block] Acquisitions and Dispositions Income taxes Income Tax Disclosure [Text Block] Income taxes Stock-Based Compensation Stock Based Compensation [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-Based Compensation Long-Term Debt. Debt Disclosure [Text Block] Long-Term Debt Litigation Legal Matters and Contingencies [Text Block] Litigation Dividends The entire disclosure of declaration and payments of dividend by the board of directors of the entity. Dividend Disclosure [Text Block] Dividends Other Income Other Income and Other Expense Disclosure [Text Block] Other Income Related Party Transactions Related Party Transactions Disclosure [Text Block] Related Party Transactions Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Earnings Per Share, Policy [Policy Text Block] Earnings Per Share Information Fair Value of Financial Instruments, Policy [Policy Text Block] Financial Instruments Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block] Allowance for Doubtful Accounts Income Tax, Policy [Policy Text Block] Income Taxes Segment Reporting, Policy [Policy Text Block] Segments Time brokerage agreements. Time Brokerage Agreements Policy Text Block Time Brokerage Agreements/Local Marketing Agreements Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Computation of Basic and Diluted Earnings Per Share Disaggregation of Revenue [Table Text Block] Schedule of Disaggregation of Revenue Schedule of Stock by Class [Table Text Block] Schedule of Stock by Class Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of Minimum Annual Rental Commitments Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Summary of Restricted Stock Transactions Number of market serving. Number Of Market Serving Number Of FM radio stations. Number Of FM Radio Stations Number Of AM radio stations. Number Of AM Radio Stations Number Of metro signals. Number Of Metro Signals Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Amortization of debt issuance costs Common Stock, Dividends, Per Share, Cash Paid Cash dividend paid Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Authorized Amount Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss, Current Debt securities, held to maturity Debt Securities, Held-to-Maturity, Fair Value Debt securities, held to maturity, fair value Marketable securities, current Allowance for doubtful accounts receivable Number of radio markets. Number of Radio Markets Number of operating segments Number of reportable segments Computation of basic and diluted earnings per share. Computation Of Basic and Diluted Earnings Per Share [Abstract] Computation of basic and diluted earnings per share Numerator. Numerator [Abstract] Numerator: Undistributed Continuing Operation Earnings (Loss), Allocation to Participating Securities, Basic Less: Income allocated to unvested participating securities Net Income (Loss) Available to Common Stockholders, Basic Net income available to common stockholders Denominator. Denominator [Abstract] Denominator: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Effect of dilutive securities: Weighted Average Number Diluted Shares Outstanding Adjustment Common stock equivalents Disaggregation of Revenue [Table] Product and Service [Axis] Product and Service [Domain] Its represent broadcast advertising revenue net . Broadcast Advertising Revenue, Net [Member] Its represent digital advertising revenue. Digital Advertising Revenue [Member] Its represent other revenue. Other Revenue [Member]