CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
ASSETS
Cash and Cash Equivalents	$ 263,737	$ 4,471
Accounts Receivable:
Oil and gas sales	39,057	35,734
Joint interest operations	23,045	5,608
Marketable Securities		12,312
Assets of Discontinued Operations		7,568
Derivative Financial Instruments	3,524	11,651
Other Current Assets	5,143	5,310
Total current assets	334,506	82,654
Property and Equipment:
Unevaluated oil and gas properties	74,612	112,851
Oil and gas properties, successful efforts method	3,517,588	3,373,695
Other	18,440	18,628
Accumulated depreciation, depletion and amortization	(1,700,831)	(1,546,487)
Net property and equipment	1,909,809	1,958,687
Assets of Discontinued Operations		511,366
Other Assets	17,907	19,944
Total Assets	2,262,222	2,572,651
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts Payable	82,679	70,552
Deferred Income Taxes	1,233	5,340
Accrued Liabilities	38,214	37,001
Liabilities of Discontinued Operations		33,280
Total current liabilities	122,126	146,173
Long-term Debt	883,324	1,324,383
Deferred Income Taxes	209,529	149,901
Reserve for Future Abandonment Costs	16,660	16,387
Other Non-Current Liabilities	2,202	2,273
Total liabilities	1,233,841	1,639,117
Commitments and Contingencies
Stockholders’ Equity:
Common stock – $0.50 par, 75,000,000 shares authorized, 48,315,612 and 48,408,734 shares outstanding at June 30, 2013 and December 31, 2012, respectively	24,158	24,204
Additional paid-in capital	483,386	480,595
Retained earnings	520,837	424,317
Accumulated other comprehensive income		4,418
Total stockholders’ equity	1,028,381	933,534
Total liabilities and stockholders' equity	$ 2,262,222	$ 2,572,651