Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 3,993	$ 1,828
Accounts receivable	85,419	58,822
Current portion of derivative asset	255	1,891
Subscriptions receivable	16,336	47,692
Prepaid expenses and other	21,023	10,097
Total current assets	127,026	120,330
Property, plant and equipment, net	2,666,718	2,120,818
Goodwill and intangible assets, net	32,611	32,747
Long-term derivative asset	3,415	27,084
Other assets, net	51,516	42,821
Total assets	2,881,286	2,343,800
Current liabilities:
Accounts payable	96,778	69,346
Advances from affiliates	27,838	26,742
Liabilities associated with drilling contracts		49,377
Current portion of derivative liability	19,983	6,353
Accrued well drilling and completion costs	70,319	40,481
Accrued interest	22,194	20,622
Distribution payable	18,497
Accrued liabilities	18,622	30,794
Total current liabilities	274,231	243,715
Long-term debt	1,203,973	942,334
Asset retirement obligations	100,002	89,776
Other long-term liabilities	2,604	684
Commitments and contingencies
Partners’ Capital:
General partner’s interest	249	4,482
Preferred limited partners’ interests	180,566	183,477
Class C common limited partner warrants	1,176	1,176
Common limited partners’ interests	1,132,694	852,457
Accumulated other comprehensive income (loss)	(14,209)	25,699
Total partners’ capital	1,300,476	1,067,291
Total liabilities and partners' capital	$ 2,881,286	$ 2,343,800