Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents	$ 0	$ 1,569
Receivables (less allowance for doubtful accounts: March 31, 2017 - $24; December 31, 2016 - $24)	36,387	26,085
Inventory	79,988	78,858
Prepaid expenses	2,426	1,684
Refundable income taxes	0	2,705
Total current assets	118,801	110,901
Property and equipment	249,780	246,219
Less accumulated depreciation and amortization	(156,083)	(153,428)
Property and equipment, net	93,697	92,791
Equity method investments (Note 2)	19,403	18,934
Other assets	2,672	2,710
Total assets	234,573	225,336
Current Liabilities
Current maturities of long-term debt	4,362	4,359
Accounts payable	16,506	20,342
Accounts payable to affiliate, net	2,807	3,349
Accrued expenses	7,317	8,945
Income taxes payable	534	0
Total current liabilities	31,526	36,995
Long-term debt, less current maturities	15,126	16,218
Revolving credit facility	24,205	15,424
Deferred credits	2,777	2,978
Accrued retirement, health and life insurance benefits	3,460	3,604
Deferred income taxes	2,942	3,432
Other noncurrent liabilities	399	393
Total liabilities	80,435	79,044
Commitments and Contingencies (Note 6)
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 March 31, 2017 and December 31, 2016, and 16,709,908 and 16,658,765 shares outstanding at March 31, 2017 and December 31, 2016, respectively	6,715	6,715
Additional paid-in capital	14,318	14,279
Retained earnings	150,643	142,652
Accumulated other comprehensive loss, net of tax	(414)	(373)
Treasury stock, at cost
Shares of 1,406,057 at March 31, 2017 and 1,457,200 at December 31, 2016	(17,128)	(16,985)
Total stockholders’ equity	154,138	146,292
Total liabilities and stockholders’ equity	$ 234,573	$ 225,336