Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 3,517	$ 1,478
Marketable securities	3,579	5,121
Trade accounts receivable, less allowances of $32 and $45, respectively	1,925	2,679
Inventories	2,136	3,332
Prepaid expenses and other current assets	528	1,041
Total current assets	11,685	13,651
Machinery and equipment	6,992	6,064
Leasehold improvements	587	380
Furniture and fixtures	159	425
	7,738	6,869
Less-accumulated depreciation and amortization	(6,174)	(6,552)
Total property and equipment, net	1,564	317
Capitalized software, net	32	96
Other assets	403	345
Total assets	13,684	14,409
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	1,273	1,475
Deferred revenue	44	652
Accrued liabilities	1,540	1,513
Accrued compensation	103	231
Short term debt	3,500
Total current liabilities	6,460	3,871
Deferred lease obligations	1,215	16
Long term debt		3,500
Total liabilities	7,675	7,387
Commitments and contingencies
Common stock, $.10 par value; 100,000,000 shares authorized; 8,393,981 and 7,011,146 shares issued and outstanding, respectively	839	701
Additional paid in capital	50,157	46,442
Accumulated deficit	(44,355)	(39,196)
Cumulative other comprehensive loss	(632)	(925)
Total shareholders' equity	6,009	7,022
Total liabilities and shareholders' equity	$ 13,684	$ 14,409