Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (4,246)	$ (2,396)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	975	1,043
Deferred tax asset allowance	2,724	136
Deferred income tax benefit	(495)	(278)
Share-based compensation expense	1,005	1,770
Shares issued for 401(k) match	265	217
Inventory provisions	109	255
Other	(16)	49
Changes in operating assets and liabilities:
Accounts receivable	(1,586)	(664)
Inventories	(79)	42
Prepaid expenses and other assets	(12)	200
Accounts payable and accrued expenses	865	(42)
Deferred revenue	480	412
Other liabilities	(177)	327
Net cash (used in) provided by operating activities	(188)	1,071
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property and equipment	(915)	(387)
Net cash used in investing activities	(915)	(387)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	112	1
Payments on term loan	(325)	(325)
Payments on capital lease obligations	(33)	(33)
Net cash used in financing activities	(246)	(357)
Change in cash and cash equivalents	(1,349)	327
Cash and cash equivalents at beginning of year	5,565	5,238
Cash and cash equivalents at end of year	4,216	5,565
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid	36	59
Taxes paid (refunded)	50	(24)
Assets acquired under capital lease		54
Deferred pension loss (gain), net of tax	$ 940	$ (226)