Commitments And Contingencies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Commitments [Line Items]
Lease expiration date	Jul. 31, 2019
Future minimum rental payments under leases, year one	$ 6,800,000
Future minimum rental payments under leases, year two	2,700,000
Future minimum rental payments under leases, year three	200,000
Future minimum rental payments under leases, year four	41,000
Rent expense incurred	13,600,000	16,900,000	14,000,000
Number of compressors under capital lease agreement	20
Capital lease term	7 years
2015	6,195,000
2016	6,195,000
2017	6,195,000
2018	6,195,000
2019	6,195,000
2020 and thereafter	9,967,000
Maintenance	11,395,000
Interest	3,671,000
Capital leases, future minimum payments, average annual payment	3,900,000
Capital lease fair market value percentage for purchase	10.00%
Repurchase of limited units outstanding	20.00%
Repurchase of limited units outstanding amount	45,000	16,000	56,000
Drilling Equipment
Other Commitments [Line Items]
Other Commitment, Due in Next Twelve Months	22,300,000
Other Commitment, Due in Second Year	3,800,000
Corporate, Non-Segment
Other Commitments [Line Items]
Other Commitment, Due in Next Twelve Months	1,400,000
Other Commitment, Due in Second Year	500,000
Gas Gathering and Processing Equipment
Other Commitments [Line Items]
Other Commitment, Due in Next Twelve Months	$ 200,000