XML 69 R57.htm IDEA: XBRL DOCUMENT v3.8.0.1
Borrowings - Schedule of Retirement of Exchangeable Senior Notes (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Debt Instrument [Line Items]    
Reacquisition price $ 143,433 $ 153,750
Net loss on extinguishment of debt 26 4,711
Exchangeable Senior Notes    
Debt Instrument [Line Items]    
Reacquisition price 143,433 153,750
Par value of Notes retired during the period (143,410) (150,000)
Write off of unamortized debt issuance cost associated with Notes retired during the period 3 961
Net loss on extinguishment of debt $ 26 $ 4,711