Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 7,139	$ 867
Accounts receivable:
Joint owners, net	4,556	17,110
Oil and gas production sales	17,711	21,991
Other	1,002	535
Total accounts receivable	23,269	39,636
Derivative asset - short-term	4,388	9,602
Assets held for sale	7,876
Other current assets	921	626
Total current assets	43,593	50,731
Proved oil and gas properties, full cost method	1,153,672	1,091,905
Other property and equipment	39,580	39,453
Total	1,193,252	1,131,358
Less accumulated depreciation, depletion, amortization and impairment	(806,916)	(768,140)
Total property and equipment, net	386,336	363,218
Operating lease ROU asset	441
Deferred financing fees, net	822	1,149
Derivative asset, long-term	9,577	10,527
Other assets	255	265
Total assets	441,024	425,890
Current liabilities:
Accounts payable	32,542	39,571
Joint interest oil and gas production payable	19,062	23,063
Accrued interest	283	335
Other accrued expenses	1,235	511
Operating lease liability - current	189
Derivative liability short-term	5,560	616
Current maturities of long-term debt	276	267
Total current liabilities	59,147	64,363
Long-term debt – less current maturities	200,883	183,091
Operating lease liabilities - long-term	224
Derivative liability long-term	1,754	4,434
Future site restoration	7,443	7,492
Total liabilities	269,451	259,380
Commitments and contingencies (Note 9)
Stockholders’ Equity:
Preferred stock, par value $0.01 per share – authorized 1,000,000 shares; -0- shares issued and outstanding
Common stock, par value $0.01 per share, authorized 400,000,000 shares; 168,399,643 and 166,713,784 issued and outstanding at September 30, 2019 and December 31, 2018, respectively	1,684	1,667
Additional paid-in capital	419,626
Accumulated deficit	(249,737)	(253,001)
Total stockholders’ equity	171,573	166,510
Total liabilities and stockholders’ equity	$ 441,024	$ 425,890