Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating activities
Net income (loss)	$ 405	$ (401)
Adjustment to reconcile net income (loss) to net cash provided by (used in) operating activities:
Allowance for doubtful accounts		(1)
Inventories reserve	13	52
Deferred tax obligation (benefit)	74	(279)
Depreciation and amortization	369	317
Share-based compensation expense	31	15
Changes in operating assets and liabilities:
Accounts receivable	(2,934)	2,037
Inventories	(148)	(437)
Prepaid expenses and other current assets	237	(27)
Other assets	9	9
Accounts payable	610	(360)
Accrued compensation and related taxes	(446)	106
Accrued warranty expense	17	8
Note payable	(18)
Deferred revenue	(66)	1
Accrued other expenses and other current liabilities	(18)	(263)
Net cash (used in) provided by operating activities	(1,865)	777
Investing activities
Purchases of property, plant and equipment	(50)	(19)
Capitalized software	(150)
Net cash used in investing activities	(200)	(19)
Financing activities
Proceeds from issuance of common stock		20
Cash provided by financing activities		20
Net change in cash and cash equivalents	(2,065)	778
Cash and cash equivalents, beginning of period	6,581	2,693
Cash and cash equivalents, end of period	4,516	3,471
Supplemental disclosure
Cash paid for interest
Income tax paid		61
Non-cash financing activity
Cashless exercise of stock options and related conversion of net shares to stockholders' equity		$ 4