Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating Activities:
Net loss	$ (931)	$ (314)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	146	162
Stock-based compensation	62	112
Penalties and waived penalties on dividends	8	1
Changes in operating assets and liabilities:
Accounts receivable	21	(773)
Prepaid expenses and other assets	15	1
Inventories	(8)
Accounts payable and accrued expenses	74	95
Deferred revenue	579	798
Net cash (used in) provided by operating activities	(34)	82
Investing Activities:
Purchases of property and equipment	(27)	(71)
Financing Activities:
Proceeds from line of credit	364
Payments on line of credit	(364)
Proceeds from stock options exercised	99	66
Proceeds from loans from officer	525
Principal payments on capital leases	(99)	(105)
Net cash provided by (used in) financing activities	525	(39)
Net increase (decrease) in cash and cash equivalents	464	(28)
Cash and cash equivalents at beginning of period	102	1,006
Cash and cash equivalents at end of period	566	978
SUPPLEMENTAL DISCLOSURE OF NON CASH FINANCING ACTIVITIES:
Preferred stock dividends accrued	69	69
Purchase of leased equipment under capital lease		216
Conversion of preferred shares to common stock