CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities:
Net loss	$ (746)	$ (145)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	231	175
Stock-based compensation	161	284
Penalties and waived penalties on dividends	3	6
Changes in operating assets and liabilities:
Accounts receivable	117	(199)
Inventories		7
Prepaid expenses and other assets	89	(62)
Accounts payable and accrued expenses	85	(32)
Deferred revenue	342	827
Net cash provided by operating activities	282	861
Investing Activities:
Purchases of property and equipment	(112)	(49)
Financing Activities:
Proceeds from line of credit		453
Payments on line of credit		(453)
Proceeds from stock options exercised	66	61
Payments of dividends		(512)
Principal payments on capital lease	(161)	(124)
Net cash used by financing activities	(95)	(575)
Net increase in cash and cash equivalents	75	237
Cash and cash equivalents at beginning of period	1,006	1,139
Cash and cash equivalents at end of period	1,081	1,376
SUPPLEMENTAL DISCLOSURE OF NON CASH FINANCING ACTIVITIES:
Preferred stock dividends accrued	104	106
Purchase of leased equipment under capital lease	$ 225	222
Conversion of preferred shares to common stock		$ 163