Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 4,397	$ 5,025
Receivables (less allowance for doubtful accounts at September 30, 2019, and December 31, 2018 - $24)	40,554	38,797
Inventory (Note 1)	126,193	108,769
Prepaid expenses	1,646	1,320
Refundable income taxes	2,850	712
Total current assets	175,640	154,623
Property, plant, and equipment	304,730	295,893
Less accumulated depreciation and amortization	(182,576)	(175,105)
Property, plant, and equipment, net	122,154	120,788
Operating lease right-of-use asset, net (Note 6)	5,628	0
Other assets	3,598	2,481
Total assets	307,020	277,892
Current Liabilities
Current maturities of long-term debt (Note 3)	397	386
Accounts payable	24,200	25,363
Accrued expenses	10,528	11,714
Total current liabilities	35,125	37,463
Long-term debt, less current maturities (Note 3)	40,756	21,040
Credit agreement - revolver (Note 3)	173	10,588
Operating lease liability (Note 6)	3,598	0
Deferred credits	1,316	1,565
Accrued retirement, health, and life insurance benefits	2,427	2,595
Other noncurrent liabilities	1,576	1,523
Deferred income taxes	2,629	1,677
Total liabilities	87,600	76,451
Commitments and Contingencies
Capital stock
Preferred, 5% non-cumulative; $10 par value; authorized 1,000 shares; issued and outstanding 437 shares	4	4
Common stock
No par value; authorized 40,000,000 shares; issued 18,115,965 shares at September 30, 2019 and December 31, 2018; and 17,024,938 and 16,856,414 shares outstanding at September 30, 2019 and December 31, 2018, respectively	6,715	6,715
Additional paid-in capital	13,601	15,375
Retained earnings	219,551	198,914
Accumulated other comprehensive loss	(104)	(164)
Treasury stock, at cost
Shares of 1,091,027 at September 30, 2019, and 1,259,511 at December 31, 2018	(20,347)	(19,403)
Total stockholders’ equity	219,420	201,441
Total liabilities and stockholders’ equity	$ 307,020	$ 277,892