UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
CASH PROVIDED BY OPERATIONS:
Net earnings	$ 2,681	$ 7,129
Adjustments to reconcile net earnings to net cash from operating activities -
Depreciation, depletion and amortization	14,385	18,086
Property sales gains	(1,948)	(522)
Dry hole costs incurred	0	803
Impairment of oil and natural gas properties	87	1,191
Provision for doubtful accounts	19	(25)
Deferred income taxes	(1,170)	(1,151)
Net change in fair value contracts	(305)	158
Equity investment (earnings) losses	2,200	0
Decrease (increase) in accounts receivable	(1,767)	48,822
Decrease (increase) in inventories	(8,395)	(1,334)
Decrease (increase) in income tax receivable	113	970
Decrease (increase) in prepayments	(1,570)	3,790
Increase (decrease) in accounts payable	(8,795)	(58,594)
Increase (decrease) in accrued liabilities	1,378	5,122
Other changes, net	(252)	(884)
Net cash provided by (used in) operating activities	(3,339)	23,561
INVESTING ACTIVITIES:
Property and equipment additions	(7,186)	(6,347)
Proceeds from property sales	3,536	660
Investments	(4,700)	0
Insurance and state collateral (deposits) refunds	1,081	(39)
Net cash (used in) investing activities	(7,269)	(5,726)
FINANCING ACTIVITIES
Dividend payments	(2,784)	(2,784)
Net cash (used in) financing activities	(2,784)	(2,784)
Increase (decrease) in cash and cash equivalents	(13,392)	15,051
Cash and cash equivalents at beginning of period	91,877	80,184
Cash and cash equivalents at end of period	$ 78,485	$ 95,235