Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating activities
Net income	$ 1,802	$ 1,116
Adjustments to reconcile net income to net cash provided (used in) by operating activities:
Allowance for doubtful accounts	38	0
Inventories reserve	9	108
Deferred tax obligation	881	548
Depreciation and amortization	930	1,119
Share-based compensation expense	36	36
Changes in operating assets and liabilities:
Accounts receivable	(1,741)	(1,721)
Inventories	(118)	1,793
Prepaid expenses and other current assets	(208)	(456)
Other assets	37	7
Accounts payable	898	(194)
Accrued compensation and related taxes	527	(611)
Accrued warranty expense	60	14
Note payable	23	(18)
Deferred revenue	107	(212)
Accrued other expenses and other current liabilities	19	34
Net cash provided (used in) by operating activities	3,300	1,563
Investing activities
Purchases of property, plant and equipment	(483)	(208)
Capitalized software	0	(340)
Net cash used in investing activities	(483)	(548)
Financing activities
Proceeds from issuance of common stock	144	34
Cash provided by financing activities	144	34
Net change in cash and cash equivalents	2,961	1,049
Cash and cash equivalents, beginning of period	7,945	6,581
Cash and cash equivalents, end of period	10,906	7,630
Supplemental disclosure
Cash paid for interest	0	0
Income tax paid	0	0
Non-cash financing activity
Cashless exercise of stock options and related conversion of net shares to stockholders' equity	$ 2	$ 9