Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash Flows From Operating Activities
Net loss	$ (2,281)	$ (3,845)
Adjustments to reconcile net loss to net cash from operating activities:
Depreciation and amortization	687	719
Deferred tax asset allowance		2,724
Deferred income tax benefit	(926)	(429)
Inventory provisions	10	94
Share-based payment arrangements	719	753
Shares issued for 401(k) match	220	197
Other	(41)	(9)
Accounts receivable	793	462
Inventories	(661)	164
Prepaid expenses and other assets	46	(119)
Accounts payable and accrued expenses	(202)	(116)
Deferred revenue	623	326
Other liabilities	(352)	(301)
Net cash (used in) provided by operating activities	(1,365)	620
Cash Flows From Investing Activities
Acquisitions of property and equipment	(534)	(807)
Net cash used in investing activities	(534)	(807)
Cash Flows From Financing Activities
Proceeds from exercise of stock options	1	113
Payments on term loan	(135)	(244)
Payments on capital lease obligations	(28)	(25)
Net cash used in financing activities	(162)	(156)
Change in cash and cash equivalents	(2,061)	(343)
Cash and cash equivalents at beginning of period	4,216	5,565
Cash and cash equivalents at end of period	$ 2,155	$ 5,222