Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Stock Purchase from NBCU (Details)

v3.7.0.1
Shareholders' Equity - Stock Purchase from NBCU (Details) - USD ($)
$ / shares in Units, $ in Millions
Jan. 31, 2017
Jan. 28, 2017
Jan. 30, 2016
Class of Stock [Line Items]      
Common stock, shares outstanding   65,192,314 57,170,245
NBCU [Member]      
Class of Stock [Line Items]      
Common stock, shares outstanding   7,141,849  
Subsequent Event [Member] | NBCU [Member]      
Class of Stock [Line Items]      
Common stock repurchased from NBCU, Shares 4,400,000    
Common stock repurchased from NBCU, Value $ 4.9    
Sale of stock, price per share $ 1.12    
Common stock, shares outstanding 2,741,849    
Percentage of ownership in Company after transaction 4.50%