Sale of Accounts Receivable (Details) - Media [Member] - USD ($)
$ in Thousands
1 Months Ended
Sep. 30, 2014
Dec. 31, 2016
Dec. 31, 2015
Advance on total value of A/R sold, as a percent 85.00%    
Remaining amount received after collection of full amount by purchaser, as a percent of the total value of A/R sold 15.00%    
Minimum interest rate on accounts receivable sold cash advances 4.25%    
Service charge on each cash advance, as a percent 2.00%    
Amount of outstanding A/R or obligations related to agreement to sell A/R   $ 0 $ 0
Prime Rate      
Interest rate over prime rate to be charged on cash advances not repaid 1.00%    
Maximum [Member]      
Advance on accounts receivable sold $ 3,000