CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 880	$ 841
Income tax receivable	4	0
Accounts receivable – trade after allowance for doubtful accounts of $60.0 thousand in 2018 and 2017	5,343	4,220
Receivables and other assets from related parties (Note 6)	45	92
Inventories (Note 2)	5,504	5,106
Prepaid expenses and other current assets	334	182
Total current assets	12,110	10,441
Net property and equipment	10,795	11,212
Other assets
Deferred income taxes	27	27
Other non-current assets	247	187
Total other assets	274	214
Total assets	23,179	21,867
Current liabilities
Current maturities of long-term debt (Note 3)	5,874	5,018
Current maturities of long-term debt, related parties (Notes 3 and 6)	64	64
Current maturities of capital lease obligations (Note 4)	307	300
Checks in excess of bank	40	148
Accounts payable	2,670	1,784
Payables and accrued expenses to related parties (Note 6)	49	173
Income tax payable	0	2
Other current liabilities	612	765
Total current liabilities	9,616	8,254
Long-term liabilities
Long-term debt, net of current maturities, related parties (Notes 3 and 6)	1,520	1,536
Capital lease obligations, net of current maturities (Note 4)	740	819
Total long-term liabilities	2,260	2,355
Shareholders’ equity
Common stock, $0.0033 par value: 20.0 million shares authorized in 2018 and 2017; 8,100,529 and 8,089,129 shares issued and outstanding in 2018 and 2017	27	27
Additional paid-in capital	24,037	24,028
Stock warrants outstanding	1,025	1,025
Retained losses	(13,742)	(13,778)
Treasury stock at cost, 30,690 shares in 2018 and 2017	(44)	(44)
Total shareholders’ equity	11,303	11,258
Total liabilities and shareholders’ equity	$ 23,179	$ 21,867