Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
OPERATING ACTIVITIES
Net loss	$ (379)	$ (2,078)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	400	421
Amortization of finite-lived intangible assets	35	52
Stock-based compensation	187	186
Gain on disposal of assets	(67)	0
Changes in operating assets and liabilities:
Decrease (increase) in accounts receivable, net	304	(205)
Decrease in inventories, net	406	170
Decrease in other assets	50	95
Increase in accrued restructuring expense	0	280
(Decrease) increase in trade accounts payable, accrued compensation and commissions expense, accrued warranty expense and other accrued liabilities	(522)	503
Net cash provided by (used in) operating activities	414	(576)
INVESTING ACTIVITIES
Capital expenditures	(269)	(53)
Asset acquisition	0	(748)
Other	94	0
Net cash used in investing activities	(175)	(801)
FINANCING ACTIVITIES
Net borrowing on note payable to bank	0	319
Net cash provided by financing activities	0	319
Increase (decrease) in cash and cash equivalents	239	(1,058)
Cash and cash equivalents at beginning of period	5,192	7,183
Cash and cash equivalents at end of period	5,431	6,125
Supplemental Disclosure:
Cash paid for interest	0	21
Cash paid for income taxes	$ 5	$ 0