Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 11,745	$ 3,309
Receivables (less allowance for doubtful accounts at June 30, 2020, and December 31, 2019 - $24)	54,164	40,931
Inventory	147,108	136,931
Prepaid expenses	4,021	2,048
Refundable income taxes	0	987
Total current assets	217,038	184,206
Property, plant, and equipment	320,192	313,958
Less accumulated depreciation and amortization	(191,589)	(185,539)
Property, plant, and equipment, net	128,603	128,419
Operating lease right-of-use assets, net	5,903	6,490
Other assets	5,469	3,482
Total assets	357,013	322,597
Current Liabilities
Current maturities of long-term debt	408	401
Accounts payable	21,429	29,511
Accrued expenses	12,626	9,383
Income taxes payable	4,732	0
Total current liabilities	39,195	39,295
Long-term debt, less current maturities	40,463	40,658
Credit agreement - revolver	23,662	1
Long-term operating lease liabilities	3,691	4,267
Deferred credits	1,094	1,233
Other noncurrent liabilities	4,605	4,170
Deferred income taxes	1,606	1,929
Total liabilities	114,316	91,553
Commitments and Contingencies (Note 7)
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 June 30, 2020 and December 31, 2019; and 16,895,522 and 17,028,125 shares outstanding at June 30, 2020 and December 31, 2019, respectively	6,715	6,715
Additional paid-in capital	15,026	14,029
Retained earnings	245,016	230,784
Accumulated other comprehensive loss	(231)	(246)
Treasury stock, at cost, 1,220,443 and 1,087,840 at June 30, 2020 and December 31, 2019, respectively	(23,833)	(20,242)
Total stockholders’ equity	242,697	231,044
Total liabilities and stockholders’ equity	$ 357,013	$ 322,597