XML 60 R49.htm IDEA: XBRL DOCUMENT v3.4.0.3
2.25% Convertible Senior Notes Due 2019 (Carrying Amounts of Liability and Equity Components - Additional Information) (Details) - 2.25% Convertible Senior Notes Due 2019 [Member] - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Jun. 30, 2014
Debt Instrument [Line Items]      
Debt instrument, interest rate 2.25%   2.25%
Transaction costs related to the equity component $ 1,177 $ 1,177  
Remaining period over which the unamortized debt discount will be amortized 3 years 3 months