Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating activities
Net (loss) income	$ (1,543)	$ 340
Adjustments to reconcile net (loss) income to net cash (used in ) provided by operating activities:
Allowance for doubtful accounts	0	7
Inventories reserve	52	167
Deferred tax asset	0	201
Depreciation and amortization	704	317
Share-based compensation expense	91	180
Excess tax benefit from share-based payment arrangement	0	(20)
Changes in operating assets and liabilities:
Accounts receivable	1,372	629
Inventories	(1,102)	(1,932)
Prepaid expenses and other current assets	90	7
Other assets	23	39
Accounts payable	(826)	548
Accrued compensation and related taxes	38	(197)
Accrued warranty expense	20	147
Deferred revenue	192	0
Accrued other expenses and other current liabilities	(46)	123
Net cash (used in) provided by operating activities	(935)	556
Investing activities
Purchases of property, plant and equipment	(181)	(226)
Capitalized software	0	(788)
Net cash used in investing activities	(181)	(1,014)
Financing activities
Proceeds from issuance of common stock	0	79
Excess tax benefit from share-based payment arrangement	0	20
Net increase in revolving credit line	300	0
Cash provided by financing activities	300	99
Net change in cash and cash equivalents	(816)	359
Cash and cash equivalents, beginning of year	5,050	7,660
Cash and cash equivalents, end of year	4,234	7,301
Supplemental disclosure
Cash paid for interest	62	0
Cash paid for income taxes	$ 0	$ 11