Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating activities
Net income	$ 602	$ 845
Adjustment to reconcile net income to net cash (used in) provided by operating activities:
Allowance for doubtful accounts		(5)
Inventories reserve	36	(21)
Deferred tax obligation	285	492
Depreciation and amortization	740	641
Share-based compensation expense	33	18
Changes in operating assets and liabilities:
Accounts receivable	(1,466)	(1,391)
Inventories	436	914
Prepaid expenses and other current assets	(87)	(456)
Other assets	17	18
Accounts payable	(194)	406
Accrued compensation and related taxes	(672)	397
Accrued warranty expense	6	(4)
Note payable	(18)	53
Deferred revenue	(143)	41
Accrued other expenses and other current liabilities	(9)	(123)
Net cash (used in) provided by operating activities	(434)	1,825
Investing activities
Purchases of property, plant and equipment	(88)	(138)
Capitalized software	(289)
Net cash used in investing activities	(377)	(138)
Financing activities
Proceeds from issuance of common stock	34	22
Cash provided by financing activities	34	22
Net change in cash and cash equivalents	(777)	1,709
Cash and cash equivalents, beginning of period	6,581	2,693
Cash and cash equivalents, end of period	5,804	4,402
Supplemental disclosure
Cash paid for interest		3
Income tax paid		62
Non-cash financing activity
Cashless exercise of stock options and related conversion of net shares to stockholders' equity	$ 9	$ 4