|
FAIR VALUE MEASUREMENTS (Details) (Recurring basis, USD $)
|
Mar. 31, 2015
|
|---|---|
|
Carrying Amount
|
|
| Assets: | |
| United States treasury bills | $ 329,990,000 |
| Marketable equity securities | 5,619,000 |
| Liabilities: | |
| Debt | 396,484,000 |
| Amount of equity component of convertible notes | 77,000,000 |
|
Fair Value
|
|
| Assets: | |
| United States treasury bills | 329,990,000 |
| Marketable equity securities | 5,619,000 |
| Total assets | 335,609,000 |
| Liabilities: | |
| Debt | 380,175,000 |
| Total liabilities | 380,175,000 |
|
Level 1
|
|
| Assets: | |
| United States treasury bills | 329,990,000 |
| Marketable equity securities | 5,619,000 |
| Total assets | 335,609,000 |
| Liabilities: | |
| Debt | 380,175,000 |
| Total liabilities | $ 380,175,000 |