Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (22,301)	$ (4,246)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	919	975
Deferred tax asset allowance	19,475	2,724
Deferred income tax benefit	(974)	(495)
Share-based compensation expense	938	1,005
Shares issued for 401(k) match	288	265
Inventory provisions	85	109
Other	(63)	(16)
Changes in operating assets and liabilities:
Accounts receivable	97	(1,586)
Inventories	(238)	(79)
Prepaid expenses and other assets	127	(12)
Accounts payable and accrued expenses	(747)	865
Deferred revenue	867	480
Other liabilities	(164)	(177)
Net cash used in operating activities	(1,691)	(188)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property and equipment	(546)	(915)
Net cash used in investing activities	(546)	(915)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from term loan	700
Payments on term loan	(159)	(325)
Proceeds from exercise of stock options	1	112
Payments on capital lease obligations	(38)	(33)
Net cash provided by (used in) financing activities	504	(246)
Change in cash and cash equivalents	(1,733)	(1,349)
Cash and cash equivalents at beginning of year	4,216	5,565
Cash and cash equivalents at end of year	2,483	4,216
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid	15	36
Taxes paid	29	50
Deferred pension loss, net of tax in 2011	$ 910	$ 940