Derivative Instruments (Narrative) (Details) (USD $)	6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Derivative [Line Items]
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net			$ 0
Affiliate Balances, Offsetting Derivative Assets, Gross Amounts Of Recognized Assets	277,000		411,600
Affiliate Balances, Offsetting Derivative Liabilities, Gross Amounts Of Recognized Liabilities	45,900
Accumulated Other Comprehensive Income	22,200		35,500
Distribution to Managing General Partner		327,000
Net production revenues	206,700
Net Deferred Gain To Be Reclassified Into Net Income Over The Next Twelve Months	11,700
Net Deferred Gain To Be Reclassified Into Net Income In Later Periods	10,500
Net Deferred Gains [Member] | Net Amount of Cash Received for Monetized Gains and Reversal of Prior Period Gains Recognized [Member]
Derivative [Line Items]
Accumulated Other Comprehensive Income	22,200
Unrealized Gains [Member] | Net Amount of Cash Received for Monetized Gains and Reversal of Prior Period Gains Recognized [Member]
Derivative [Line Items]
Accumulated Other Comprehensive Income			31,800
Accumulated Other Comprehensive Income (Loss), Prior Periods, Net Of Tax			219,500
Noncash Distribution [Member] | Net Amount of Cash Received for Monetized Gains and Reversal of Prior Period Gains Recognized [Member]
Derivative [Line Items]
Distribution to Managing General Partner			327,000
Allocation To Limited Partner Only [Member]
Derivative [Line Items]
Net production revenues	19,100
Allocation To Limited Partner And Managing General Partner [Member]
Derivative [Line Items]
Gain Recognized On Settled Commodity Contracts			188,300
Accounts Receivable Monetized Gains Affiliate [Member]
Derivative [Line Items]
Affiliate Balances, Offsetting Derivative Assets, Gross Amounts Of Recognized Assets	190,000		248,500
Long Term Accounts Receivable Monetized [Member]
Derivative [Line Items]
Affiliate Balances, Offsetting Derivative Assets, Gross Amounts Of Recognized Assets	87,000		163,100
Put Premiums Payable Affiliate [Member]
Derivative [Line Items]
Affiliate Balances, Offsetting Derivative Liabilities, Gross Amounts Of Recognized Liabilities	9,400
Long Term Put Premiums Payable Affiliate [Member]
Derivative [Line Items]
Affiliate Balances, Offsetting Derivative Liabilities, Gross Amounts Of Recognized Liabilities	$ 36,500