Quarterly report pursuant to Section 13 or 15(d)

Share Repurchases (Details Textual)

v3.20.4
Share Repurchases (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended
Oct. 01, 2020
Dec. 31, 2020
Dec. 31, 2019
May 17, 2017
Aug. 31, 2011
Share Repurchases (Textual) [Abstract]          
Payments for Repurchase of Common Stock   $ 7,283 $ 191    
Class A Common Stock          
Share Repurchases (Textual) [Abstract]          
Treasury Stock, Shares, Acquired 4,900,000        
Treasury stock acquired volume weighted-average price $ 1.48        
Payments for Repurchase of Common Stock $ 7,200        
Class A Common Stock | MayTwoThousandSeventeenAuthorization [Member]          
Share Repurchases (Textual) [Abstract]          
Treasury Stock, Shares, Acquired   0 0    
Stock Repurchase Program       $ 2,000  
Stock Repurchase Program Remaining Authorized Repurchases Amount   $ 700      
Class A Common Stock | August 2011 authorization [Member]          
Share Repurchases (Textual) [Abstract]          
Stock Repurchase Program         $ 20,000
Stock Repurchase Program Remaining Authorized Repurchases Amount       $ 100  
Class A Common Stock | Outside of Publically Announced Repurchase Program [Member]          
Share Repurchases (Textual) [Abstract]          
Treasury Stock, Shares, Acquired   65,488 92,183    
Treasury stock acquired volume weighted-average price   $ 0.81 $ 2.07