XML 113 R95.htm IDEA: XBRL DOCUMENT v3.6.0.2
Long-Term Debt - Cash Convertible Senior Notes (Details) - 2.125% Cash convertible senior notes due 2019 - USD ($)
1 Months Ended
Jul. 02, 2014
Jun. 30, 2014
Sep. 30, 2016
Debt Instrument [Line Items]      
Convertible senior notes issued and settled $ 30,000,000.0 $ 200,000,000  
Stated interest rate   2.125% 2.125%
Option to purchase additional principal   $ 30,000,000  
Deferred financing costs   $ 8,800,000