CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenue from product sales	$ 36,505,000	$ 46,180,000
Cost of sales for product sales	35,086,000	49,105,000
Impairment loss, property and equipment	0	636,600
Inventory adjustment for lower of cost or market (Note 1)	0	1,283,000
Total cost of sales	35,086,000	51,025,000
Operating income (loss)	1,419,000	(4,845,000)
Total selling, general and administrative expenses	4,475,000	3,879,000
Loss before other income (expense)	(3,056,000)	(8,724,000)
Other income (expense)
Interest expense, including loan fee amortization	(509,000)	(695,000)
Gain on sale of assets	0	320,000
Gain on insurance proceeds	399,000	0
Other income, net	16,000	27,000
Total other expense	(94,000)	(348,000)
Loss before income taxes	(3,150,000)	(9,072,000)
Income tax provision (Note 7)	80,000	13,000
Net loss from continuing operations	(3,230,000)	(9,085,000)
Income from discontinued operations, net of tax, including gain of $6.0 million in 2015	0	7,320,000
Net Loss	$ (3,230,000)	$ (1,765,000)
Continuing operations, basic (in dollars per share)	$ (0.40)	$ (1.14)
Discontinued operations, basic (in dollars per share)	0	0.92
Continuing operations, diluted (in dollars per share)	(0.40)	(1.14)
Discontinued operations, diluted (in dollars per share)	$ 0	$ 0.92
Weighted average shares outstanding:
Basic (in Shares)	8,048	7,989
Diluted (in Shares)	8,048	7,989