CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
CURRENT ASSETS
Cash and cash equivalents	$ 30,826	$ 26,623
Accounts receivable:
Oil and gas sales	41,014	39,268
Joint interest and other, net of allowance for doubtful accounts of $1,204 and $1,184 at September 30, 2014 and December 31, 2013	16,593	17,121
Affiliates	480	264
Inventory	32,447	39,183
Deferred income taxes	4,088	7,581
Fair value of derivatives	3,372	2,518
Prepaids and other	6,650	5,753
TOTAL CURRENT ASSETS	135,470	138,311
PROPERTY AND EQUIPMENT
Oil and gas properties, successful efforts method	2,576,901	2,403,277
Pipelines and other midstream facilities	58,333	54,800
Contract drilling equipment	116,264	96,270
Other	21,084	20,620
PROPERTY AND EQUIPMENT, GROSS	2,772,582	2,574,967
Less accumulated depreciation, depletion and amortization	(1,487,411)	(1,375,860)
Property and equipment, net	1,285,171	1,199,107
Debt issue costs, net
Debt issue costs, net	12,991	12,785
Investments and other	16,914	16,534
TOTAL OTHER ASSETS	29,905	29,319
Total assets	1,450,546	1,366,737
Accounts payable:
Trade	75,335	75,872
Oil and gas sales	45,552	37,834
Affiliates	891	874
Fair value of derivatives	0	208
Accrued liabilities and other	34,426	21,607
TOTAL CURRENT LIABILITIES	156,204	136,395
NON-CURRENT LIABILITIES
Long-term debt	631,682	639,638
Deferred income taxes	164,635	140,809
Asset retirement obligations	45,223	49,981
Deferred revenue from volumetric production payment	24,725	29,770
Accrued compensation under non-equity award plans	25,064	15,469
Other	952	892
TOTAL NON-CURRENT LIABILITIES	892,281	876,559
COMMITMENTS AND CONTINGENCIES (Note 14)
STOCKHOLDERS’ EQUITY
Preferred stock, par value $.10 per share, authorized — 3,000,000 shares; none issued	0	0
Common stock, par value $.10 per share, authorized — 30,000,000 shares; issued and outstanding — 12,169,536 and 12,165,536 shares at September 30, 2014 and December 31, 2013	1,216	1,216
Additional paid-in capital	152,686	152,556
Retained earnings	248,159	200,011
TOTAL STOCKHOLDERS' EQUITY	402,061	353,783
Total liabilities and equity	$ 1,450,546	$ 1,366,737