Consolidated Statements of Operations (Audited) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues:
Natural gas, NGL and crude oil sales	$ 270,327	$ 276,605	$ 205,029
Sales from natural gas marketing	47,079	66,419	69,071
Commodity price risk management gain (loss), net	32,339	46,090	59,891
Well operations, pipeline income and other	6,388	6,846	9,030
Total revenues	356,133	395,960	343,021
Costs, expenses and other:
Production costs	75,485	67,352	63,543
Cost of natural gas marketing	46,552	65,465	68,015
Exploration expense	22,605	6,253	13,675
Impairment of natural gas and crude oil properties	168,149	25,159	6,481
General and administrative expense	58,815	61,454	42,188
Depreciation, depletion and amortization	146,879	128,907	108,095
Accretion of asset retirement obligations	4,060	1,733	1,329
Gain on sale of Leaseholds	(4,353)	(196)	(174)
Total cost, expenses and other	518,192	356,127	303,152
Income (loss) from operations	(162,059)	39,833	39,869
Loss on extinguishment of debt	(23,283)	0	0
Interest expense	(48,287)	(36,985)	(33,250)
Interest income	8	47	71
Income (loss) from continuing operations before income taxes	(233,621)	2,895	6,690
Provision for income taxes	88,835	183	(652)
Income (loss) from continuing operations	(144,786)	3,078	6,038
Income (loss) from discontinued operations, net of tax	14,074	10,359	(104)
Net income (loss)	(130,712)	13,437	5,934
Less: net loss attributable to noncontrolling interests	0	0	280
Net income (loss) attributable to shareholders	(130,712)	13,437	6,214
Amounts attributable to Petroleum Development Corporation shareholders:
Income (loss) from continuing operations	(144,786)	3,078	6,318
Income (loss) from discontinued operations, net of tax	14,074	10,359	(104)
Net income (loss) attributable to shareholders	$ (130,712)	$ 13,437	$ 6,214
Basic
Income (loss) from continuing operations	$ (5.23)	$ 0.13	$ 0.33
Income (loss) from discontinued operations	$ 0.51	$ 0.44	$ (0.01)
Net income (loss) attributable to shareholders	$ (4.72)	$ 0.57	$ 0.32
Diluted
Income (loss) from continuing operations	$ (5.23)	$ 0.13	$ 0.32
Income (loss) from discontinued operations	$ 0.51	$ 0.43	$ (0.01)
Net income (loss) attributable to shareholders	$ (4.72)	$ 0.56	$ 0.31
Weighted-average common shares outstanding
Basic	27,677	23,521	19,674
Diluted	27,677	23,871	19,821