Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net loss	$ (1,996,000)	$ (2,192,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation, Depletion and Amortization	3,092,000	2,597,000
Amortization of debt issuance costs	37,000
Net (gain) loss on sale of property and equipment	(4,000)	1,000
Change in pension and severance	93,000	(135,000)
Deferred income tax (benefit) expense	(4,000)	14,000
Accounts receivable	(909,000)	(485,000)
Inventories	276,000	(5,856,000)
Other current assets	(47,000)	227,000
Non-current assets	(2,000)
Accounts payable	(773,000)	539,000
Accrued payroll and benefits	(63,000)	(178,000)
Other current liabilities	(219,000)	263,000
Non-current benefits payable	29,000	123,000
Total adjustments	1,506,000	(2,890,000)
Net cash used in operating activities	(490,000)	(5,082,000)
Cash flows from investing activities:
Proceeds from sale of property and equipment	16,000
Capital expenditures	(196,000)	(11,483,000)
Net cash used in investing activities	(180,000)	(11,483,000)
Cash flows from financing activities:
Proceeds from drawings on line of credit	5,150,000	6,810,000
Repayment of line of credit	(2,000,000)	(1,810,000)
Proceeds from long-term debt		13,378,000
Repayment of long-term debt	(1,976,000)	(1,846,000)
Proceeds from sale of general partner interest	224,000
Debt issuance costs		(349,000)
Net cash provided by financing activities	1,398,000	16,183,000
Net (decrease) increase in cash	728,000	(382,000)
Cash and cash equivalents at beginning of year	404,000	786,000
Cash and cash equivalents at end of year	$ 1,132,000	$ 404,000