Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
OPERATING ACTIVITIES
Net loss	$ (2,570)	$ (6,246)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	621	681
Amortization of finite-lived intangible assets	83	61
Write-down of note receivable	0	11
Stock-based compensation	213	388
Deferred income tax provision	0	3,922
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable, net	(245)	1,072
Decrease in inventories, net	298	524
Decrease in other assets	88	354
Increase in accrued restructuring expense	18	0
Increase (decrease) in trade accounts payable, accrued compensation and commissions expense, accrued warranty expense and other accrued liabilities	400	(827)
Net cash used in operating activities	(1,094)	(60)
INVESTING ACTIVITIES
Capital expenditures	(164)	(351)
Asset acquisition	(748)	0
Net cash used in investing activities	(912)	(351)
FINANCING ACTIVITIES
Net repayments on note payable to bank	(1,181)	(163)
Restricted cash	1,500	0
Principal payments of long-term debt	0	(58)
Purchase of treasury stock	0	(81)
Net cash provided by (used in) financing activities	319	(302)
Decrease in cash and cash equivalents	(1,687)	(713)
Cash and cash equivalents at beginning of period	7,183	8,625
Cash and cash equivalents at end of period	5,496	7,912
Supplemental Disclosure:
Cash paid for interest	32	27
Cash paid for income taxes	$ 0	$ 112