Quarterly report pursuant to Section 13 or 15(d)

Stockholder Rights Plan - Additional Information (Details)

v3.7.0.1
Stockholder Rights Plan - Additional Information (Details)
3 Months Ended
Jan. 29, 2016
right
$ / shares
$ / right
Mar. 31, 2017
$ / shares
Dec. 31, 2016
$ / shares
Class Of Stock [Line Items]      
Number of rights for each outstanding share | right 1    
Common stock, par value $ 0.01 $ 0.01 $ 0.01
Right to purchase a share of preferred stock   Each right entitles the registered holder to purchase from the Company one one-thousandth of a share of preferred stock, par value $.01 per share.  
Preferred stock, par value $ 0.01    
Rights expiration date Jan. 29, 2026    
Minimum percentage of common stock for tender offer 9.80%    
Exercise price of rights $ 12    
Percentage of market price of common stock 50.00%    
Redemption price per right | $ / right 0.01    
Series A Preferred Stock      
Class Of Stock [Line Items]      
Right to purchase a share of preferred stock   Each holder of a right, except the acquirer, will be entitled, subject to the Company?s right to redeem or exchange the right, to exercise, at an exercise price of $12, the right for one one-thousandth of a share of the Company?s newly created Series A Participating Preferred Stock  
Preferred stock, par value   $ 0.01 $ 0.01