Commitments And Contingencies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Commitments [Line Items]
Lease expiration date	Sep. 01, 2017
Future minimum rental payments under leases, year one	$ 8,400,000
Future minimum rental payments under leases, year two	3,400,000
Future minimum rental payments under leases, year three	600,000
Future minimum rental payments under leases, year four	100,000
Rent expense incurred	16,900,000	14,000,000	8,500,000
Repurchase of limited units outstanding	20.00%
Repurchase of limited units outstanding amount	16,000	56,000	22,000
Drilling Equipment [Member]
Other Commitments [Line Items]
Purchase Commitment, Remaining Minimum Amount Committed	11,400,000
Gas Gathering and Processing Equipment [Member]
Other Commitments [Line Items]
Purchase Commitment, Remaining Minimum Amount Committed	$ 600,000