Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (951)	$ (437)
Adjustments to reconcile net loss to net cash from operating activities:
Depreciation and amortization	211	210
Deferred income tax benefit	(133)	(434)
Inventory provisions	10	54
Share-based payment arrangements	304	241
Shares issued for 401(k) match	78	67
Other	33	26
Changes in operating assets and liabilities:
Accounts receivable	349	(413)
Inventories	(2)	(203)
Prepaid expenses and other assets	(48)	(394)
Accounts payable and accrued expenses	(903)	(191)
Deferred revenue	56	79
Other liabilities	(316)	(231)
Net cash used in operating activities	(1,312)	(1,626)
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisitions of property and equipment	(79)	(61)
Net cash used in investing activities	(79)	(61)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from exercise of stock options		61
Payments on capital lease obligations	(9)	(8)
Payments on term loan	(81)	(81)
Net cash used in financing activities	(90)	(28)
Change in cash and cash equivalents	(1,481)	(1,715)
Cash and cash equivalents at beginning of period	4,216	5,565
Cash and cash equivalents at end of period	$ 2,735	$ 3,850