Convertible Senior Notes - Schedule of Conversion (Details) shares in Thousands |
1 Months Ended | 2 Months Ended |
|---|---|---|
|
Nov. 30, 2013
shares
$ / shares
|
Jun. 30, 2017
shares
$ / shares
|
|
| 2022 Notes | ||
| Debt Instrument [Line Items] | ||
| Initial Conversion Price per Share (in USD per share) | $ / shares | $ 134.75 | |
| Initial Conversion Rate per $1,000 Par Value (in USD per share) | 0.00742 | |
| Initial Number of Shares (in shares) | shares | 5,807 | |
| 2018 Notes | ||
| Debt Instrument [Line Items] | ||
| Initial Conversion Price per Share (in USD per share) | $ / shares | $ 73.88 | |
| Initial Conversion Rate per $1,000 Par Value (in USD per share) | 0.01354 | |
| Initial Number of Shares (in shares) | shares | 7,783 |