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SUBSEQUENT EVENT (Details) (USD $)
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4 Months Ended | 12 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended | 0 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2013
|
Dec. 31, 2013
Notes due 2019
|
Jan. 15, 2014
Subsequent event
Notes due 2019
|
Mar. 31, 2014
Subsequent event
Notes due 2019
|
Feb. 14, 2014
Subsequent event
Notes due 2019
|
Feb. 07, 2014
Subsequent event
Notes due 2019
|
Jan. 29, 2014
Subsequent event
Notes due 2019
|
Dec. 31, 2013
Subsequent event
Notes due 2019
|
Feb. 07, 2014
Subsequent event
Notes due 2022
|
Dec. 31, 2013
Subsequent event
Notes due 2022
|
Feb. 07, 2014
Subsequent event
Notes due 2022
Minimum
item
|
Feb. 07, 2014
Subsequent event
Notes due 2022
Maximum
|
Feb. 07, 2014
Subsequent event
Notes due 2022
On or after February 15, 2017
|
Feb. 07, 2014
Subsequent event
Notes due 2022
On or after February 15, 2020
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| Subsequent Event | |||||||||||||||
| Interest rate of debt instrument (as a percent) | 8.75% | 8.75% | 8.75% | 5.875% | 5.875% | ||||||||||
| Principal amount of Notes tendered | $ 1,038.75 | $ 1,038.75 | |||||||||||||
| Consent fee payable as a percentage of principal amount | 3.00% | ||||||||||||||
| Principal amount of notes tendered | 1,000 | 1,000 | |||||||||||||
| Aggregate principal amount for which holders tendered | 463,950,000 | 14,000 | |||||||||||||
| Percentage of outstanding notes received in tenders and consents | 77.33% | 77.33% | |||||||||||||
| Aggregate principal amount | 375,000,000 | ||||||||||||||
| Debt instrument redemption price as a percentage of principal amount | 104.406% | 100.00% | |||||||||||||
| Aggregate principal amount for which tendered offer was accepted for purchase | 14,000 | 463,950,000 | |||||||||||||
| Gain on extinguishment related to the cash tender offer | 4,383,000 | ||||||||||||||
| Write-off of a non-cash premium | (3,219,000) | (12,687,000) | |||||||||||||
| Term for filing registration rights agreement after the issue date | 120 days | ||||||||||||||
| Number of registration statements to be filed | 1 | ||||||||||||||
| Term for causing registration statement to become effective | 210 days | ||||||||||||||
| Special interest rate accrual (in dollars per day) | 0.192 | ||||||||||||||
| Unit principal amount of debt on which special interest rate will accrue | $ 1,000 | ||||||||||||||