Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
OPERATIONS:
Net loss	$ (69,000)	$ (256,000)
Adjustments to reconcile net loss to net cash provided by (used for) operating activities:
Depreciation and amortization	117,000	138,000
Stock-based compensation expense	20,000	19,000
Non-cash interest income, net	(1,000)	(4,000)
Equity in (income) loss of affiliate company	1,000	4,000
Changes in operating assets and liabilities
Accounts receivable	180,000	(241,000)
Inventories	(45,000)	(61,000)
Other current assets	(10,000)	(1,000)
Accounts payable	90,000	291,000
Deferred revenue	153,000	8,000
Accrued payroll	(58,000)	(49,000)
Accrued expenses	(145,000)	(31,000)
Other current liabilities	(41,000)	(89,000)
Other long-term liabilities	(5,000)	(11,000)
Net cash provided by (used for) operating activities	187,000	(283,000)
INVESTING ACTIVITIES:
Proceeds from notes and interest receivable	250,000	250,000
Purchases of property and equipment	(179,000)	(71,000)
Net cash provided by investing activities	71,000	179,000
Effects of exchange rate changes on cash	6,000	29,000
Net increase (decrease) in cash	264,000	(75,000)
Cash at beginning of period	2,347,000	3,152,000
Cash at end of period	2,611,000	3,077,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for income taxes	$ 20,000	$ 13,000