CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and Cash Equivalents	$ 29,324	$ 23,193
Accounts Receivable:
Oil and gas sales	76,772	87,611
Joint interest operations	9,231	9,175
Derivative Financial Instruments	2,356	15,401
Income Taxes Receivable	10,218	10,218
Other Current Assets	6,222	13,829
Total current assets	134,123	159,427
Oil and gas properties, successful efforts method:
Proved	1,777,325	1,682,164
Unproved	188,801	191,929
Other	4,449	4,442
Accumulated depreciation, depletion and amortization	(248,017)	(210,556)
Net property and equipment	1,722,558	1,667,979
Goodwill	350,214	350,214
Income Taxes Receivable	10,218	10,218
Operating Lease Right-of-Use Assets	4,773
Other Assets	2	2
Total Assets	2,221,888	2,187,840
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts Payable	155,574	138,767
Accrued Expenses	40,505	68,086
Operating Leases	2,007
Total current liabilities	198,086	206,853
Long-term Debt	1,265,847	1,244,363
Deferred Income Taxes	166,152	161,917
Long-term Operating Leases	2,766
Reserve for Future Abandonment Costs	5,243	5,136
Total liabilities	1,638,094	1,618,269
Commitments and Contingencies
Stockholders' Equity:
Common stock — $0.50 par, 155,000,000 shares authorized, 105,868,064 and 105,871,064 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	52,934	52,936
Additional paid-in capital	453,163	452,513
Accumulated earnings	77,697	64,122
Total stockholders' equity	583,794	569,571
Total liabilities and stockholders' equity	$ 2,221,888	$ 2,187,840