Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities
Net income	$ 41,823	$ 31,184	$ 26,191
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,308	11,253	12,382
Gain on sale of equity method investment	(11,381)	0	0
Gain on property insurance recoveries	0	(230)	0
Gain on sale of assets	0	(872)	0
Share-based compensation	2,574	2,402	1,414
Equity method investment (earnings) loss	348	(4,036)	(6,102)
Distribution received from equity method investee	7,131	3,300	0
Deferred income taxes, including change in valuation allowance	(3,420)	681	1,349
Other, net	61	0	453
Changes in operating assets and liabilities:
Receivables, net	(8,262)	4,585	2,002
Inventory	(14,291)	(20,106)	(24,260)
Prepaid expenses	(498)	(622)	117
Refundable income taxes	725	(3,390)	1,073
Accounts payable	9,540	(3,178)	3,653
Accounts payable to affiliate, net	(3,349)	1,058	(1,042)
Accrued expenses	2,278	(1,407)	2,351
Deferred credits	(827)	(424)	(697)
Accrued retirement, health, and life insurance benefits	(289)	(477)	(703)
Other, net	0	0	481
Net cash provided by operating activities	33,471	19,721	18,662
Cash Flows from Investing Activities
Additions to property, plant, and equipment	(21,055)	(17,922)	(30,526)
Divestiture of equity method investment, net	22,832	351	0
Proceeds from property insurance recoveries	0	230	0
Proceeds from sale of property and other	0	1,209	0
Acquisition of George Remus®	0	(1,551)	0
Net cash provided by (used in) investing activities	1,777	(17,683)	(30,526)
Cash Flows from Financing Activities
Payment of dividends	(17,380)	(2,066)	(1,087)
Purchase of treasury stock	(4,663)	(1,518)	(15,408)
Loan fees incurred with borrowings	(377)	(114)	(348)
Principal payments on long-term debt	(358)	(2,346)	(1,641)
Proceeds on long-term debt	20,000	0	2,700
Proceeds from credit agreement	25,930	27,184	26,092
Principal payments on credit agreement	(56,885)	(22,356)	(3,338)
Net cash provided by (used in) financing activities	(33,733)	(1,216)	6,970
Increase (decrease) in cash	1,515	822	(4,894)
Cash, beginning of year	1,569	747	5,641
Cash, end of year	$ 3,084	$ 1,569	$ 747