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Long-Term Debt (Details 5) $ / shares in Units, $ in Thousands, shares in Millions | 1 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2014 | Jun. 30, 2014 USD ($) $ / shares shares | Jun. 30, 2014 USD ($) $ / shares | Jun. 30, 2009 USD ($)
Long-Term Debt |  |  |  |
Value of shares acquired upon exercise of call options |  |  | $ 89,407 |
4.25% convertible senior notes due June 2014 |  |  |  |
Long-Term Debt |  |  |  |
Principle amount of senior notes |  |  |  | $ 355,000
Interest rate (as a percent) |  | 4.25% | 4.25% | 4.25%
Conversion rate of debt instrument (Shares per USD) |  | 0.0435084 |  |
Conversion price per common stock shares (in dollars per share) | $ / shares |  | $ 22.98 | $ 22.98 |
Repayment of long term debt |  | $ 370,000 |  |
Number of shares of common stock issued upon redemption of debt | shares |  | 6.8 |  |
Price per share of common stock for call options purchased (in dollars per share) | $ / shares |  | $ 22.98 | 22.98 |
Warrant exercise price (in dollars per share) | $ / shares |  | 32.19 | 32.19 |
Effective conversion price (in dollars per share) | $ / shares |  | $ 32.19 | $ 32.19 |
Debt instrument face amount for effective conversion price |  | $ 325,000 | $ 325,000 |
Number of shares acquired upon exercise of call options | shares |  | 6.5 |  |
Value of shares acquired upon exercise of call options |  | $ 89,400 |  |
Trading days within which counterparties have the right to exercise warrants | 80 days |  |  |

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