Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
OPERATING ACTIVITIES:
Net income (loss)	$ (955)us-gaap_ProfitLoss	$ 469us-gaap_ProfitLoss
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation and amortization	398us-gaap_DepreciationAndAmortization	435us-gaap_DepreciationAndAmortization
Stock-based compensation expense	49us-gaap_ShareBasedCompensation	82us-gaap_ShareBasedCompensation
Non-cash investment and interest income, net	(127)	10
Non-cash income from discontinued operations	100
Equity in (income) loss of affiliate company	1	(21)
Changes in operating assets and liabilities:
Accounts receivable, net	650	611
Inventories, net	64us-gaap_IncreaseDecreaseInInventories	(77)us-gaap_IncreaseDecreaseInInventories
Other assets, net	(155)	(90)
Accounts payable	(192)	178
Accrued payroll	54	161
Deferred revenue, current portion	(32)	(250)
Accrued expenses	(182)	(88)
Accrued settlement	(259)ins_IncreaseDecreaseInAccruedSettlement
Other current liabilities	7	(112)
Deferred revenue, net of current portion	(47)	190
Other long-term liabilities	45	37
Net cash provided by (used for) operating activities	(581)	1,535
INVESTING ACTIVITIES:
Purchase of marketable securities	(132)	(67)
Proceeds from note and interest receivable		250
Proceeds from sale of equipment		4
Purchases of property and equipment	(277)	(559)
Patent addition		(6)
Proceeds from sale of long-term investment	171	(60)
Net cash used by investing activities	(238)	(438)
Effects of exchange rate changes on cash	10	(11)
Net increase (decrease) in cash	(809)	1,086
Cash at beginning of year	3,433	2,347
Cash at end of year	2,624	3,433
Supplemental disclosure of cash flow information:
Cash paid for income taxes	65us-gaap_IncomeTaxesPaid	54us-gaap_IncomeTaxesPaid
Non-Cash Transactions:
Transfer of property and equipment to inventory		147
Sale of vehicle for note receivable, net		$ 21

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