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Variable Interest Entities (Tables) | 3 Months Ended
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Mar. 31, 2013
Variable Interest Entity [Line Items] |
Royalty Trusts Distributions | The following distributions are expected to be paid on May 30, 2013 to holders of record as of the close of business on May 15, 2013 (in thousands):
Royalty Trust |  | Total Distribution |  | Amount to be Distributed to Third-Party Unitholders
Mississippian Trust I |  | $ | 15,909 |  |  | $ | 12,087 |
Permian Trust |  | 24,787 |  |  | 18,688 |
Mississippian Trust II |  | 27,761 |  |  | 16,693 |
Total |  | $ | 68,457 |  |  | $ | 47,468 |
Grey Ranch Plant, L.P |
Variable Interest Entity [Line Items] |
Assets and Liabilities Included in Unaudited Condensed Consolidated Balance Sheets | GRLP’s assets and liabilities, after considering the effects of intercompany eliminations, included in the accompanying unaudited condensed consolidated balance sheets at March 31, 2013 and December 31, 2012 consisted of the following (in thousands):
| March 31, 2013 |  | December 31, 2012
Cash and cash equivalents | $ | 883 |  |  | $ | 1,080 |
Accounts receivable, net | 18 |  |  | 20 |
Prepaid expenses | 45 |  |  | 64 |
Other current assets | 109 |  |  | 109 |
Total current assets | 1,055 |  |  | 1,273 |
Other property, plant and equipment, net | 1,225 |  |  | 1,246 |
Total assets | $ | 2,280 |  |  | $ | 2,519 |
Accounts payable and accrued expenses | $ | 982 |  |  | $ | 274 |
Total liabilities | $ | 982 |  |  | $ | 274 |
Royalty Trusts |
Variable Interest Entity [Line Items] |
Royalty Trust Initial Public Offerings | The following table summarizes information about each Royalty Trust upon completion of its initial public offering:
|  | Mississippian Trust I |  | Permian Trust |  | Mississippian Trust II
Net proceeds of offering (in millions) |  | $ | 336.9 |  |  | $ | 580.6 |  |  | $ | 587.1 |
Total outstanding common units |  | 21,000,000 |  |  | 39,375,000 |  |  | 37,293,750 |
Total outstanding subordinated units |  | 7,000,000 |  |  | 13,125,000 |  |  | 12,431,250 |
Beneficial interest owned by Company(1) |  | 38.4 | % |  | 34.3 | % |  | 39.9 | %
Liquidation date(2) |  | 12/31/2030 |  |  | 3/31/2031 |  |  | 12/31/2031 |
____________________
(1) | Subsequent to the initial public offerings, the Company sold common units of the Mississippian Trust I and the Permian Trust it owned in transactions exempt from registration under Rule 144 under the Securities Act. These transactions decreased the Company’s beneficial interests in the Royalty Trusts. See further discussion of the unit sales below.
(2) | At the time each Royalty Trust terminates, 50% of the royalty interests conveyed to the Royalty Trust will automatically revert to the Company, and the remaining 50% will be sold with the proceeds distributed to Royalty Trust unitholders.
Royalty Trusts Distributions | The Royalty Trusts declared and paid quarterly distributions during the three-month periods ended March 31, 2013 and 2012 as follows (in thousands):
|  | Three Months Ended March 31,
|  | 2013 |  | 2012
Total distributions |  | $ | 76,361 |  |  | $ | 52,068 |
Distributions to third-party unitholders |  | $ | 51,256 |  |  | $ | 32,740 |
Open Oil and Natural Gas Commodity Derivative Contracts | The tables below present the open oil and natural gas commodity derivative contracts at March 31, 2013 underlying the derivatives agreements. The combined volume in the tables below reflects the total volume of the Royalty Trusts’ open oil and natural gas commodity derivative contracts. Oil Price Swaps Underlying the Derivatives Agreements
| Notional (MBbls) |  | Weighted Average Fixed Price
April 2013 - December 2013 | 1,137 |  |  | $ | 103.03 |
January 2014 - December 2014 | 1,862 |  |  | $ | 100.70 |
January 2015 - December 2015 | 630 |  |  | $ | 101.03 |
Natural Gas Collars Underlying the Derivatives Agreements
| Notional (MMcf) |  | Collar Range
April 2013 - December 2013 | 646 |  |  | $ | 4.00 |  | — | $ | 7.15 |
January 2014 - December 2014 | 937 |  |  | $ | 4.00 |  | — | $ | 7.78 |
January 2015 - December 2015 | 1,010 |  |  | $ | 4.00 |  | — | $ | 8.55 |
Oil Price Swaps Underlying the Derivatives Agreements and Novated to the Royalty Trusts
| Notional (MBbls) |  | Weighted Avg. Fixed Price
April 2013 - December 2013 | 999 |  |  | $ | 103.27 |
January 2014 - December 2014 | 991 |  |  | $ | 100.79 |
January 2015 - March 2015 | 141 |  |  | $ | 100.90 |
Assets and Liabilities Included in Unaudited Condensed Consolidated Balance Sheets | The Royalty Trusts’ assets and liabilities, after considering the effects of intercompany eliminations, included in the accompanying unaudited condensed consolidated balance sheets at March 31, 2013 and December 31, 2012 consisted of the following (in thousands):
| March 31, 2013 |  | December 31, 2012
Cash and cash equivalents(1) | $ | 6,277 |  |  | $ | 7,445 |
Accounts receivable | 27,019 |  |  | 28,596 |
Derivative contracts | 6,334 |  |  | 10,286 |
Total current assets | 39,630 |  |  | 46,327 |
Investment in royalty interests(2) | 1,325,942 |  |  | 1,325,942 |
Less: accumulated depletion | (125,322 | ) |  | (103,746 | )
| 1,200,620 |  |  | 1,222,196 |
Derivative contracts | 5,931 |  |  | 7,660 |
Total assets | $ | 1,246,181 |  |  | $ | 1,276,183 |
Accounts payable and accrued expenses | $ | 2,004 |  |  | $ | 1,101 |
Total liabilities | $ | 2,004 |  |  | $ | 1,101 |
____________________
(1) | Includes $3.0 million held by the trustee at March 31, 2013 and December 31, 2012 as reserves for future general and administrative expenses.
(2) | Investment in royalty interests is included in oil and natural gas properties in the accompanying unaudited condensed consolidated balance sheets, and was determined by allocating the historical net book value of the Company’s full cost pool based on the fair value of each Royalty Trust’s royalty interests relative to the fair value of the Company’s full cost pool.
Royalty Trusts Ownership Interest | The Company’s beneficial interests in the Royalty Trusts at March 31, 2013 and December 31, 2012 were as follows:
| March 31, 2013 |  | December 31, 2012
Mississippian Trust I | 26.9 | % |  | 26.9 | %
Permian Trust | 30.5 | % |  | 30.5 | %
Mississippian Trust II | 39.9 | % |  | 39.9 | %
Pinon Gathering Company LLC |
Variable Interest Entity [Line Items] |
Schedule Of Amounts Due To/From Variable Interest Entities | Amounts due from and due to PGC as of March 31, 2013 and December 31, 2012, respectively, included in the accompanying unaudited condensed consolidated balance sheets are as follows (in thousands):
| March 31, 2013 |  | December 31, 2012
Accounts receivable due from PGC | $ | 1,858 |  |  | $ | 1,976 |
Accounts payable due to PGC | $ | 5,004 |  |  | $ | 5,053 |

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