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Related Party Transactions (Details Textual) - USD ($) | 8 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | May 09, 2017 | Mar. 31, 2003
Related Party Transaction [Line Items] |  |  |  |  |  |
CEO Employment Agreement |  | In June2011, we entered into a new employment agreement with Edward K. Christian, Chairman, President and CEO, which became effective as of June1, 2011, and replaces and supersedes his prior employment agreement. On February 12, 2016 we entered into an amendment to the agreement. The amendment extends the term of the employment agreement to March 31, 2021. The amendment also states that on each anniversary of the effective date of the employment agreement, the Companys Compensation committee shall determine in its discretion the amount of any annual increases (which shall not be less than the greater of 4 % or a defined cost of living increase). Mr.Christian may defer any or all of his annual salary. |  |  |  |
Deferred Compensation Details |  | On December 21, 2015, Mr. Christian agreed to defer approximately $100,000 of his 2016 salary which was paid 100% on January 6, 2017. On December 13, 2016, Mr. Christian agreed to defer approximately $100,000 of his 2017 salary to be paid 100% on January 5, 2018. On December 5, 2017, Mr. Christian agreed to defer approximately $100,000 of his 2018 salary to be paid 100% on January 4, 2019. |  |  |  |
Option Agreement For Kfjx |  | $ 1,200,000 |  |  |  |
Equity Method Investment, Ownership Percentage |  | 100.00% |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  |  | $ 23,000,000 |
Operating Leases, Rent Expense, Minimum Rentals |  | $ 3,300 |  |  |  |
CEO [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Average Annual Compensation |  | 1,759,000 |  |  |  |
Surtsey Productions Inc [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Proceeds from Rents Received | $ 3,000 |  | $ 6,000 | $ 6,000 |  |
Surtsey Media [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Tba Fees Kvct |  | 3,800 | 3,900 | 3,800 |  |
Extension Fee Paid |  | 27,950 |  |  |  |
Debt Guaranteed Related Party |  |  |  |  |  | $ 1,250,000
Station Agreement Fees Kfjx |  | 5,200 | $ 5,100 | $ 5,000 |  |
Extension fees paid, KFJX |  | $ 37,050 |  |  |  |

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