Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows from Operating Activities
Net income	$ 22,899	$ 19,712
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation and amortization	8,610	9,260
Distribution received from equity method investee	3,300	0
Gain on property insurance recoveries	(230)	0
Gain on sale of assets	(871)	0
Deferred income taxes, including change in valuation allowance	(1,216)	1,405
Share-based compensation	1,538	1,417
Equity method investment earnings	(2,260)	(6,010)
Changes in Operating Assets and Liabilities:
Receivables, net	(6,504)	1,013
Inventory	(16,910)	(17,767)
Prepaid expenses	283	(1,060)
Accounts payable	(3,340)	3,052
Accounts payable to affiliate, net	193	737
Accrued expenses	(2,241)	2,338
Refundable income taxes	(642)	(319)
Deferred credit	(223)	(520)
Accrued retirement health and life insurance benefits	(542)	(746)
Other, net	0	286
Net cash provided by operating activities	1,844	12,798
Cash Flows from Investing Activities
Additions to plant, property and equipment	(12,666)	(20,043)
Proceeds from property insurance recoveries	230	0
Proceeds from sale of property and other	1,208	0
Net cash used in investing activities	(11,228)	(20,043)
Cash Flows from Financing Activities
Purchase of treasury stock	(1,518)	(15,366)
Payment of dividends	(1,722)	(1,087)
Principal payments on long-term debt	(2,259)	(1,203)
Proceeds from credit facility	23,408	21,125
Payments on credit facility	(9,158)	(1,391)
Loan fees incurred with borrowings	(114)	(348)
Net cash provided by financing activities	8,637	1,730
Decrease in cash and cash equivalents	(747)	(5,515)
Cash and cash equivalents, beginning of year	747	5,641
Cash and cash equivalents, end of period	$ 0	$ 126