Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues:
Natural gas, NGL and crude oil sales	$ 79,374	$ 47,295	$ 215,468	$ 153,851
Sales from natural gas marketing	17,209	18,337	51,308	53,613
Commodity price risk management gain, net	46,706	19,029	43,361	74,508
Well operations, pipeline income and other	1,693	2,159	5,350	6,896
Total revenues	144,982	86,820	315,487	288,868
Costs, expenses and other:
Production costs	15,846	16,524	56,559	47,489
Cost of natural gas marketing	17,227	18,300	50,427	52,830
Exploration expense	1,666	3,712	5,537	13,960
General and administrative expense	13,683	10,426	47,065	30,975
Depreciation, depletion and amortization	34,316	28,024	99,347	82,427
Gain on sale of properties and equipment	(32)	(57)	(32)	(153)
Total cost, expenses and other	82,706	76,929	258,903	227,528
Income from operations	62,276	9,891	56,584	61,340
Interest income	36	21	47	60
Interest expense	(9,496)	(8,174)	(27,625)	(23,646)
Income from continuing operations before income taxes	52,816	1,738	29,006	37,754
Provision (benefit) for income taxes	20,256	(1,156)	9,825	12,410
Income from continuing operations	32,560	2,894	19,181	25,344
Income (loss) from discontinued operations, net of tax	0	460	2,620	(1,056)
Net income	32,560	3,354	21,801	24,288
Less: net loss attributable to noncontrolling interests	0	(5)	0	(66)
Net income attributable to shareholders	32,560	3,359	21,801	24,354
Amounts attributable to Petroleum Development Corporation shareholders:
Income from continuing operations	32,560	2,899	19,181	25,410
Income (loss) from discontinued operations, net of tax	0	460	2,620	(1,056)
Net income attributable to shareholders	$ 32,560	$ 3,359	$ 21,801	$ 24,354
Basic
Income from continuing operations	$ 1.38	$ 0.15	$ 0.82	$ 1.32
Income (loss) from discontinued operations	$ 0.00	$ 0.02	$ 0.11	$ (0.05)
Net income attributable to shareholders	$ 1.38	$ 0.17	$ 0.93	$ 1.27
Diluted
Income from continuing operations	$ 1.37	$ 0.15	$ 0.81	$ 1.31
Income (loss) from discontinued operations	$ 0.00	$ 0.02	$ 0.11	$ (0.05)
Net income attributable to shareholders	$ 1.37	$ 0.17	$ 0.92	$ 1.26
Weighted average common shares outstanding:
Basic	23,569	19,250	23,497	19,218
Diluted	23,783	19,406	23,712	19,319