Total consideration per $1,000 principal amount of 2017 Senior Notes validly tendered on or before March 14, 2011.

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Percentage of remaining principal amount of the 2017 Senior Notes accepted and purchased in tender offer.

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Amount of 2017 Senior Notes repurchased by the Company.

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Percentage of outstanding principal amount of 2017 Senior Notes repurchased by the Company.

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Total consideration per $1,000 principal amount of 2017 Senior Notes validly tendered after March 14, 2011, but before March 25, 2011.

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Total principal amount of 2017 Senior Notes accepted and purchased in tender offer.

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Total consideration per $1,000 principal amount of 2018 Senior Notes validly tendered on or before March 14, 2011.

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Percentage of remaining principal amount of the 2018 Senior Notes accepted and purchased in tender offer.

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Amount of 2018 Senior Notes repurchased by the Company.

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Percentage of outstanding principal amount of 2018 Senior Notes repurchased by the Company.

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Total consideration per $1,000 principal amount of 2018 Senior Notes validly tendered after March 14, 2011, but before March 25, 2011.

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Total principal amount of 2018 Senior Notes accepted and purchased in tender offer.

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument, that will be amortized over the life of the instrument.

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The amount of the financing fees and expenses incurred related to the issuing of long-term debt, to be amortized over the life of the debt instrument

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The effective interest rate of Senior Notes and variable interest rate of the Credit Facility at the end of the reporting period.

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The net proceeds received from the offering of long-term debt.

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Amount of outstanding principal due under the debt instrument after redemptions

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Dollar amount of debt instrument redeemed in accordance with the provisions of the indentures

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The initial borrowing base under the credit facility.

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- Definition

The amount at which the debt instrument was issued as a percentage of the face amount.

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- Definition

Percentage used to calculate the per annum fee on the unused portion of the borrowing base under the Credit Facility.

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- Definition

The amount of the financing fees and expenses incurred related to the Credit Facility, to be amortized over the life of the Credit Facility.

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- Definition

Amount of outstanding letters of credit that reduce the amount available under the credit facility

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- Definition

The percentage of properties the Company is required to maintain mortgages on as a covenant of the credit facility

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Data Type:	us-types:percentItemType
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- Definition

Maximum percentage of 2019 Senior Notes that can be redeemed on or before May 15, 2014.

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Percentage of debt instrument redeemed in accordance with the provisions of the indenture related to the debt instrument.

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Principal amount increment of 2017 Senior Notes accepted for purchase in tender offer.

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Principal amount increment of 2018 Senior Notes accepted for purchase in tender offer.

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- Definition

Redemption price, stated as a percentage of the face amount, for 2019 notes redeemed at the request of the holder due to a change of control of the Company.

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- Definition

Redemption price, stated as a percentage of the face amount, for 2019 Senior Notes redeemed on or after May 15, 2015, but on or before December 31, 2015. Redemption also includes all accrued and unpaid interest.

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Redemption price, stated as a percentage of the face amount, for 2019 Senior Notes redeemed on or before May 15, 2014. Redemption also includes all accrued and unpaid interest.

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- Definition

The redetermined borrowing base under the credit facility

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Balance Type:	na
Period Type:	duration

- Definition

Dollar amount of consent payment included in total consideration of tender offer.

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- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 21
-Paragraph 16, 20

+ Details

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- Definition

Estimated fair value of the debt instrument at the balance-sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10

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Period Type:	instant

- Definition

Interest rate stated in the contractual debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

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- Definition

Date when the debt instrument was issued, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 4

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- Definition

Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 26
-Paragraph 20, 21

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- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

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- Definition

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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-Article 7

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-Publisher SEC
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-Number 210
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-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
-Article 5

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