Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents	$ 7,911	$ 1,569
Receivables (less allowance for doubtful accounts: June 30, 2017 - $24; December 31, 2016 - $24)	34,930	26,085
Inventory	85,551	78,858
Prepaid expenses	2,832	1,684
Refundable income taxes	3,131	2,705
Total current assets	134,355	110,901
Property and equipment	252,586	246,219
Less accumulated depreciation and amortization	(158,812)	(153,428)
Property and equipment, net	93,774	92,791
Equity method investments	11,152	18,934
Other assets	2,665	2,710
Total assets	241,946	225,336
Current Liabilities
Current maturities of long-term debt	4,366	4,359
Accounts payable	16,140	20,342
Accounts payable to affiliate, net	3,181	3,349
Accrued expenses	8,009	8,945
Total current liabilities	31,696	36,995
Long-term debt, less current maturities	14,034	16,218
Revolving credit facility	25,332	15,424
Deferred credits	2,568	2,978
Accrued retirement, health and life insurance benefits	3,415	3,604
Deferred income taxes	4,009	3,432
Other noncurrent liabilities	402	393
Total liabilities	81,456	79,044
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 June 30, 2017 and December 31, 2016, and 16,715,939 and 16,658,765 shares outstanding at June 30, 2017 and December 31, 2016, respectively	6,715	6,715
Additional paid-in capital	14,723	14,279
Retained earnings	156,325	142,652
Accumulated other comprehensive loss, net of tax	(454)	(373)
Treasury stock, at cost
Shares of 1,400,026 at June 30, 2017 and 1,457,200 at December 31, 2016	(16,823)	(16,985)
Total stockholders’ equity	160,490	146,292
Total liabilities and stockholders’ equity	$ 241,946	$ 225,336