Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash Flows From Operating Activities:
Net loss	$ (1,339)	$ (384)
Adjustments to reconcile net loss to cash provided by (used in) operating activities:
Depreciation	312	321
Amortization	209	321
Stock-based compensation expense	493	386
Issuance of stock from treasury	16
Reversal of provision for inventory reserves	(65)	(49)
Non cash pension expense	48	9
Deferred income taxes	(104)	(35)
Amortization of loan fees	144	144
Non cash interest expense	37	248
Equity based directors' fees		51
Change in derivative liability		142
Changes in operating assets and liabilities:
Accounts receivable	(33)	(348)
Inventories	(312)	(242)
Prepaid and other current assets	(503)	(76)
Other assets	302	(21)
Income taxes payable	6	7
Accounts payable, accrued expenses and accrued compensation	1,376	(711)
Net cash provided by (used in) operating activities	587	(237)
Cash Flows From Investing Activities:
Capital expenditures	(81)	(138)
Acquisition of licenses	(20)	(62)
Net cash used in investing activities	(101)	(200)
Cash Flows From Financing Activities:
Net borrowings on line of credit	116	367
Repayments of debt	(251)	(230)
Proceeds from exercise of stock options	40
Net cash (used in) provided by financing activities	(95)	137
Net increase (decrease) in cash	391	(300)
Cash, beginning of year	168	468
Cash, end of year	559	168
Supplemental Cash Flow Information:
Cash paid for interest	369	300
Cash paid for income taxes
Non cash investing and financing activities:
Capital expenditures financed by notes payable	15	10
Conversion of subordinated convertible debt to common stock	522
Cashless exercise of stock options	$ 24