UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating activities:
Net (losses) earnings	$ (4,175)	$ 2,681
Adjustments to reconcile net (losses) earnings to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization	10,772	14,385
Gains on sale of property	(347)	(1,948)
Impairment of oil and natural gas properties	3	87
Provision for doubtful accounts	(9)	19
Deferred income taxes	(1,198)	(1,170)
Net change in fair value contracts	48	(305)
Losses from equity investment	0	468
Impairment of investments in unconsolidated affiliates	2,500	1,732
Loss on deconsolidation of subsidiary (Note 3)	3,505	0
Changes in assets and liabilities:
Accounts receivable	5,228	(1,767)
Accounts receivable/payable, affiliates	266	0
Inventories	(9,328)	(8,395)
Income tax receivable	(1,412)	113
Prepayments and other current assets	927	(1,570)
Accounts payable	9,482	(8,795)
Accrued liabilities	465	1,378
Other	(240)	(252)
Net cash provided by (used in) operating activities	16,487	(3,339)
Investing activities:
Property and equipment additions	(2,465)	(7,186)
Proceeds from property sales	430	3,536
Investments in unconsolidated affiliates	0	(4,700)
Insurance and state collateral (deposits) refunds	439	1,081
Net cash used in investing activities	(1,596)	(7,269)
Financing activities:
Dividends paid on common stock	(2,784)	(2,784)
Net cash used in financing activities	(2,784)	(2,784)
Increase (decrease) in cash and cash equivalents	12,107	(13,392)
Cash and cash equivalents at beginning of period	87,342	91,877
Cash and cash equivalents at end of period	$ 99,449	$ 78,485