Annual report pursuant to Section 13 and 15(d)

Subsequent Events Subsequent Event, Offering of Convertible Senior Notes (Details)

v3.6.0.2
Subsequent Events Subsequent Event, Offering of Convertible Senior Notes (Details) - Subsequent Event [Member] - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2017
Jan. 19, 2017
Subsequent Event [Line Items]    
Convertible Debt   $ 287.5
Debt Instrument, Interest Rate, Stated Percentage   6.25%
Debt Instrument, Convertible, Conversion Price   $ 10.00
Proceeds from Convertible Debt $ 282.0  
Over-Allotment Option [Member]    
Subsequent Event [Line Items]    
Convertible Debt   $ 37.5