Stockholders' Equity - Additional Information (Details)		1 Months Ended	12 Months Ended
	Aug. 08, 2016 USD ($) shares	Feb. 29, 2016 shares	Dec. 31, 2016 USD ($) RegistrationStatements $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Jul. 30, 2006 shares	Dec. 23, 2004 $ / shares shares	Feb. 18, 2004 $ / shares
Class Of Stock [Line Items]
Number of registration statements filled | RegistrationStatements			3
Number of options granted			315,000	25,000
Option Granted, Vesting period		3 years
Term of award		10 years
Stock-based compensation | $			$ 655,000	$ 9,000
Unrecognized compensation costs related to nonvested | $			$ 200,000
Weighted average period over which unrecognized compensation is expected to be recognized			9 months 18 days
Stock options exercised | $			$ 0	0
Cash payments received | $			0	0
Tax benefit from stock -based compensation expense | $			$ 0	$ 0
Stock options granted, weighted average fair value, per share | $ / shares			$ 2.63
Nonvested shares outstanding			195,000
2006 Omnibus Equity Compensation Plan
Class Of Stock [Line Items]
Omnibus Plan authorizes shares of Class A common stock for issuance, subject to adjustment in certain circumstances					350,000
Omnibus Plan provides that the maximum aggregate number of shares of Class A common stock units, stock awards and other stock-based awards that may be granted, other than dividend equivalent					100,000
Omnibus Plan expiration date			Jul. 17, 2016
Number of options granted			0
2006 Omnibus Equity Compensation Plan | Restricted Stock
Class Of Stock [Line Items]
Nonvested shares outstanding			0	0
2006 Omnibus Equity Compensation Plan | Minimum | Restricted Stock
Class Of Stock [Line Items]
Option Granted, Vesting period			2 years
2006 Omnibus Equity Compensation Plan | Maximum | Restricted Stock
Class Of Stock [Line Items]
Option Granted, Vesting period			5 years
1999 NQ Plan
Class Of Stock [Line Items]
Option Granted, Vesting period			4 years
Options granted vesting percentage			20.00%
1999 NQ Plan vesting rights			20% each year for the first four years from the date of grant.
1999 NQ Plan | Share-based Compensation Award, Tranche One
Class Of Stock [Line Items]
Options granted vesting percentage			20.00%
1999 NQ Plan | Share-based Compensation Award, Tranche Two
Class Of Stock [Line Items]
Options granted vesting percentage			20.00%
1999 NQ Plan | Share-based Compensation Award, Tranche Three
Class Of Stock [Line Items]
Options granted vesting percentage			20.00%
1999 NQ Plan | Share-based Compensation Award, Tranche Four
Class Of Stock [Line Items]
Options granted vesting percentage			20.00%
1999 ISO Plan
Class Of Stock [Line Items]
Shares reserve for issuance			300,000
Contractual life of option			10 years
1999 Stock Option Plans
Class Of Stock [Line Items]
Number of options granted			0
Series C convertible preferred stock
Class Of Stock [Line Items]
Preferred stock par value per share | $ / shares						$ 0.01
Preferred Stock issued to CBS Radio			380,000	380,000
Common stock shares to be issued to CBS Radio						760,000
Liquidation preference per share | $ / shares			$ 0.01	$ 0.01
Series C convertible preferred stock | CBS Radio
Class Of Stock [Line Items]
Preferred Stock issued to CBS Radio						380,000
Preferred Stock, shares issuable upon conversion						2
Series C convertible preferred stock | CBS Radio | Stock Purchase Agreement
Class Of Stock [Line Items]
Number of shares sold	380,000
Number of shares sold, value | $	$ 3,800,000
Series C convertible preferred stock | Stockholder Agreement | CBS Radio
Class Of Stock [Line Items]
Negotiation right open period			10 days
Matching right expiration period			1 year
Series B Preferred Stock
Class Of Stock [Line Items]
Preferred stock par value per share | $ / shares							$ 0.01
Liquidation preference per share | $ / shares			$ 1,000				$ 1,000
Class A common stock
Class Of Stock [Line Items]
Common stock voting right			one vote per share
Number of options granted		75,000
Class A common stock | 1999 NQ Plan
Class Of Stock [Line Items]
Shares reserve for issuance			30,000
Class B common stock
Class Of Stock [Line Items]
Common stock voting right			ten votes per share