Consolidated Statements of Operations - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating Expenses
General and administrative expenses	$ (1,005,000)	$ (823,000)
Total operating expenses	(1,005,000)	(823,000)
Interest income	943,000
Product financing interest income	125,000
Gain on extinguishment of subordinated note receivable	448,000
Income from Continued Dumping and Subsidy Offset Act, net	26,000	433,000
Impairment loss	(168,000)
Income from continuing operations before income taxes	369,000	(390,000)
Income tax benefit	1,202,000
Income (loss) from continuing operations	1,571,000	(390,000)
Discontinued operations
Loss from discontinued operations (including loss on sale of assets of $865)	(3,011,000)	(7,104,000)
Income tax benefit		35,000
Loss from discontinued operations	(3,011,000)	(7,069,000)
Net loss	$ (1,440,000)	$ (7,459,000)
Basic and diluted income (loss) per share:
Income (loss) from continuing operations (in dollars per share)	$ 0.11	$ (0.06)
Loss from discontinued operations (in dollars per share)	(0.21)	(0.47)
Net loss (in dollars per share)	$ (0.10)	$ (0.53)
Weighted average shares outstanding:
Basic (in shares)	14,531	14,236
Diluted (in shares)	14,574	14,236