Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 884	$ 2,656
Accounts receivable, net of allowance for doubtful accounts of $147 and $516, respectively	4,525	4,219
Inventories	1,980	2,234
Prepaid expenses and other current assets	641	871
Total current assets	8,030	9,980
Property and equipment:
Furniture and fixtures	619	620
Leasehold improvements	562	556
Equipment	3,886	3,964
Property and equipment, gross	5,067	5,140
Accumulated depreciation	4,282	4,279
Property and equipment, net	785	861
Intangible assets, net	3,570	3,987
Deferred income taxes	59	62
TOTAL ASSETS	12,444	14,890
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	2,707	3,315
Warranty and other current liabilities	1,789	2,096
Accrued compensation	604	687
Accrued restructuring	32	216
Total current liabilities	5,132	6,314
Deferred income taxes	157	165
Other long-term liabilities	104	91
Shareholders' equity
Preferred stock, $.01 par value; 5,000,000 shares authorized, none issued or outstanding
Common stock, $.01 par value; 20,000,000 shares authorized, 5,005,803 and 4,995,963 issued and outstanding, respectively	49	49
Additional paid-in capital	23,622	23,547
Accumulated other comprehensive loss	(335)	(158)
Accumulated deficit	(16,285)	(15,118)
Total shareholders' equity	7,051	8,320
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 12,444	$ 14,890