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FINANCING ARRANGEMENTS (Details) (USD $) | 1 Months Ended | 3 Months Ended
--- | --- | ---
Jul. 31, 2009 Y | Sep. 30, 2011 | Sep. 30, 2010
Total debt |  |  |
Balance at the beginning of period |  | $ 313,411,000 | $ 440,029,000
Repayment of long-term debt and capital lease obligations |  | (9,669,000) | (3,334,000)
Amortized debt discount |  | 1,183,000 | 1,086,000
Other |  | (910,000) | 1,888,000
Balance at the end of period |  | 304,015,000 | 439,669,000
Long-term debt |  |  |
Net carrying amount of long-term debt |  | 304,000,000 |
Long-term debt, additional disclosures |  |  |
Interest cost related to amortization of the discount |  | 1,183,000 | 1,086,000
Convertible senior notes |  |  |
Total debt |  |  |
Amortized debt discount |  | 1,183,000 | 1,086,000
Long-term debt |  |  |
Principal amount of long-term debt | 172,500,000 | 172,500,000 | 172,500,000
Interest rate percentage (as a percent) | 5.00% | 5.00% | 5.00%
Net carrying amount of long-term debt |  | 157,431,000 | 152,847,000
Long-term debt, additional disclosures |  |  |
Long-term debt conversion ratio | 64.6726 | 64.9168 |
Principal amount applied to conversion ratio | 1,000 | 1,000 |
Long-term debt conversion price (in dollars per share) | $ 15.46 | $ 15.40 |
Convertible long-term debt amount allocated to equity | 24,700,000 |  |
Fair value of long-term debt | 147,800,000 |  |
Debt discount amortization period (in years) | 5 |  |
Effective interest rate on the convertible debt (as a percent) | 8.90% |  |
Unamortized debt discount | (24,700,000) | (15,069,000) | (19,653,000)
Interest cost related to contractual interest coupon |  | 2,156,000 | 2,156,000
Interest cost related to amortization of the discount |  | 1,183,000 | 1,086,000
Total interest cost |  | 3,339,000 | 3,242,000
Agreement to refinance existing capital leases |  |  |
Long-term debt |  |  |
Principal amount of long-term debt |  | $ 20,500,000 |
Debt instrument term (in years) |  | 3 |
Interest rate percentage (as a percent) |  | 4.90% |
Capital lease amortization rate (as a percent) |  | 9.20% |

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