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CONVERTIBLE SENIOR NOTES (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
Jul. 09, 2014 | Jul. 27, 2010 | Sep. 30, 2015 | Sep. 30, 2014 | Jul. 09, 2014 | Sep. 30, 2015
Debt |  |  |  |  |  |
Non-cash deferred financing amortization costs included in interest expense |  |  | $ 637 | $ 384 |  | $ 1,688
Predecessor |  |  |  |  |  |
Debt |  |  |  |  |  |
Non-cash interest expense recognized |  |  |  |  | $ 1,592 |
Non-cash deferred financing amortization costs included in interest expense | $ 170 |  |  |  | 4,461 |
Predecessor | 2010 Notes |  |  |  |  |  |
Debt |  |  |  |  |  |
Proceeds from convertible debt |  | $ 125,000 |  |  |  |
Interest rate on convertible notes (as a percent) |  | 5.00% |  |  |  |
Interest expense, including amortization of discount not recorded | $ 255 |  |  |  | $ 2,522 |
Effective interest rate on liability component (as a percent) | 10.00% |  |  |  | 10.00% |
Cash interest expense recognized |  |  |  |  | $ 1,886 |
Non-cash interest expense recognized |  |  |  |  | 1,592 |
Non-cash deferred financing amortization costs included in interest expense |  |  |  |  | $ 216 |

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