Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stockholder Rights Plan (Details)

v3.6.0.2
Stock-Based Compensation - Stockholder Rights Plan (Details) - $ / shares
May 06, 2016
Dec. 31, 2016
Mar. 31, 2016
Stockholder Rights Plan      
Preferred stock, par value (in dollars per share)   $ 0.001 $ 0.001
Minimum change in 4.99% shareholders leading to an ownership change 50.00%    
Rolling period to determine ownership change 3 years    
Minimum percentage of individual ownership of shares contributing to an ownership change 4.99%    
Series B Junior Participating Preferred Stock      
Stockholder Rights Plan      
Preferred share purchase rights period 30 days    
Preferred stock conversion basis 1    
Number of shares of preferred stock purchased with each right 0.001    
Preferred stock, par value (in dollars per share) $ 0.001    
Purchase price (in dollars per share) $ 8.76    
Period following public announcement of beneficial ownership acquired by various persons resulting in rights becoming exercisable 10 days    
Period following commencement of tender offer or exchange offer that would result in acquisition of beneficial ownership various persons resulting in rights becoming exercisable 10 days    
Expiration period of New Rights after 2017 annual meeting of stockholders or after beginning of taxable year in which no Tax Benefits are to be carried forward 1 day    
Preferred stock dividend minimum if declared $ 1.00    
Preferred stock rights ratio over common stock 1,000    
Series B Junior Participating Preferred Stock | Minimum      
Stockholder Rights Plan      
Beneficial ownership of common stock (as a percent) 4.99%