Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows from Operating Activities
Net income	$ 19,712	$ 16,112
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation and amortization	9,260	9,202
Gain on property insurance recoveries	0	(1,223)
Deferred income taxes, including change in valuation allowance	1,405	(1,215)
Share based compensation	1,417	588
Equity method investment earnings	(6,010)	(7,287)
Changes in Operating Assets and Liabilities:
Receivables, net	1,013	(3,729)
Inventory	(17,767)	3,452
Prepaid expenses	(1,060)	(587)
Refundable income taxes	(319)	241
Accounts payable	3,052	(8,188)
Accounts payable to affiliate, net	737	2,220
Accrued expenses	2,338	(295)
Deferred credit	(520)	334
Accrued retirement health and life insurance benefits and other accrued retiree benefits	(746)	(456)
Other	286	(414)
Net cash provided by operating activities	12,798	8,755
Cash Flows from Investing Activities
Additions to property and equipment	(20,043)	(4,920)
Proceeds from property insurance recoveries	0	1,383
Proceeds from sale of property and other	0	4
Net cash used in investing activities	(20,043)	(3,533)
Cash Flows from Financing Activities
Purchase of treasury stock	(15,366)	(601)
Payment of dividends	(1,087)	(907)
Principal payments on long-term debt	(1,203)	(1,162)
Proceeds from credit facility	21,125	49,590
Payments on credit facility	(1,391)	(54,933)
Loan fees incurred with borrowings	(348)	(66)
Net cash provided by (used in) financing activities	1,730	(8,079)
Decrease in cash and cash equivalents	(5,515)	(2,857)
Cash and cash equivalents, beginning of year	5,641	2,857
Cash and cash equivalents, end of period	$ 126	$ 0