Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Net loss	$ (3,845)	$ (1,847)
Adjustments to reconcile net loss to net cash from operating activities:
Depreciation and amortization	719	782
Deferred tax asset allowance	2,724	136
Deferred income tax benefit	(429)	(175)
Inventory provisions	94	140
Share-based compensation expense	753	1,302
Other	188	211
Changes in operating assets and liabilities:
Accounts receivable	462	(1,377)
Inventories	164	(208)
Prepaid expenses and other assets	(119)	296
Accounts payable and accrued expenses	(116)	(64)
Deferred revenue	326	399
Other liabilities	(301)	325
Net cash provided by (used in) operating activities	620	(80)
Acquisitions of property and equipment	(807)	(365)
Net cash used in investing activities	(807)	(365)
Proceeds from exercise of stock options	113	1
Payments on term loan	(244)	(244)
Payments on capital lease obligations	(25)	(25)
Net cash used in financing activities	(156)	(268)
Change in cash and cash equivalents	(343)	(713)
Cash and cash equivalents at beginning of period	5,565	5,238
Cash and cash equivalents at end of period	$ 5,222	$ 4,525