UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH PROVIDED BY OPERATIONS:
Net earnings	$ 5,363	$ 8,015
Adjustments to reconcile net earnings to net cash from operating activities -
Depreciation, depletion and amortization	6,106	5,529
Property sale (gains)	(55)	(35)
Dry hole costs incurred	655	0
Impairment of oil and gas properties	93	52
Deferred income taxes	(551)	864
Net change in fair value contracts	316	(254)
Decrease (increase) in accounts receivable	16,533	(15,041)
Decrease (increase) in inventories	(11,921)	(2,310)
Decrease (increase) in income tax receivable	(1,739)	1,199
Decrease (increase) in prepayments	7,295	1,050
Increase (decrease) in accounts payable	11,720	(13,991)
Increase (decrease) in accrued liabilities	1,758	4,026
Other changes, net	(162)	28
Net cash provided by (used in) operating activities	35,411	(10,868)
INVESTING ACTIVITIES:
Property and equipment additions	(7,770)	(3,903)
Insurance and state collateral (deposits) refunds	(122)	0
Proceeds from property sales	55	35
Net cash (used in) investing activities	(7,837)	(3,868)
FINANCING ACTIVITIES:
Dividend payments	(928)	0
Net cash (used in) financing activities	(928)	0
Increase (decrease) in cash and cash equivalents	26,646	(14,736)
Cash and cash equivalents at beginning of period	60,733	47,239
Cash and cash equivalents at end of period	$ 87,379	$ 32,503