Quarterly report pursuant to Section 13 or 15(d)

Financing Arrangements (Notes Payable) (Details)

v3.4.0.3
Financing Arrangements (Notes Payable) (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Notes Payable, Current and Noncurrent [Abstract]    
Net carrying amount $ 204,653 $ 201,985
2019 convertible senior notes    
Notes Payable, Current and Noncurrent [Abstract]    
Principal amount outstanding 245,000 245,000
Unamortized discount (37,169) (39,628)
Net carrying amount 207,831 205,372
Less: Unamortized deferred financing costs 3,178 3,387
Total notes payable $ 204,653 $ 201,985