Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 15,384	$ 15,576
Trade accounts receivable, net of allowance for doubtful accounts of $147 and $147, respectively	5,784	5,501
Inventories	3,418	3,135
Deferred tax assets	1,096	1,004
Prepaid expenses and other current assets	386	363
Total current assets	26,068	25,579
Machinery and equipment	3,975	3,948
Leasehold improvements	593	591
Gross property and equipment	4,568	4,539
Less: accumulated depreciation	(3,389)	(3,289)
Net property and equipment	1,179	1,250
Deferred tax assets	937	1,034
Goodwill	1,706	1,706
Intangible assets, net	2,079	2,194
Restricted certificates of deposit	450	450
Other assets	184	186
Total assets	32,603	32,399
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	1,399	1,041
Accrued wages and benefits	1,171	1,562
Accrued sales commissions	362	348
Accrued rent	544	529
Accrued professional fees	406	385
Deferred revenue and customer deposits	204	255
Other current liabilities	410	459
Total current liabilities	4,496	4,579
Commitments and Contingencies
Preferred stock, $0.01 par value; 5,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.01 par value; 20,000,000 shares authorized; 10,483,255 and 10,453,255 shares issued, respectively	105	105
Addtional paid-in capital	26,087	26,030
Retained earnings	928	636
Accumulated other comprehensive earnings	1,191	1,253
Treasury stock, at cost; 33,077 and 33,077 shares, respectively	(204)	(204)
Total stockholders' equity	28,107	27,820
Total liabilities and stockholders' equity	32,603	32,399
Common Stock [Member]
LIABILITIES AND STOCKHOLDERS' EQUITY
Total stockholders' equity	$ 105	$ 105