CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities:
Net income (loss)	$ 57	$ (352)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	40	36
Stock-based compensation	70	68
Changes in operating assets and liabilities:
Accounts receivable	(660)	(62)
Inventories	(7)	25
Prepaid expenses and other assets	4	(26)
Accounts payable and accrued expenses	212	107
Deferred revenue	397	284
Net cash provided by operating activities	113	55
Investing Activities:
Purchases of property and equipment	(17)	(6)
Financing Activities:
Proceeds from line of credit	508	240
Payments on line of credit	(328)	(320)
Penalties and waived penalties on dividends	7	3
Proceeds from stock options exercised		9
Principal payments on capital leases	(34)	(20)
Net cash provided by (used in) financing activities	153	(88)
Net increase (decrease) in cash and cash equivalents	249	(39)
Cash and cash equivalents at beginning of period	52	308
Cash and cash equivalents at end of period	301	269
Cash paid during the year for interest	5	4
SUPPLEMENTAL DISCLOSURE OF NON CASH FINANCING ACTIVITIES:
Preferred stock dividends accrued	37	38
Purchase of leased equipment under capital lease		$ 71