Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 23,126	$ 19,018
Trade accounts receivable, net of allowance for doubtful accounts of $146 and $147, respectively	5,034	5,748
Inventories	3,769	3,243
Deferred tax assets	529	701
Prepaid expenses and other current assets	473	371
Total current assets	32,931	29,081
Property and equipment:
Machinery and equipment	4,322	4,190
Leasehold improvements	593	594
Gross property and equipment	4,915	4,784
Less: accumulated depreciation	(3,647)	(3,530)
Net property and equipment	1,268	1,254
Deferred tax assets	884	1,030
Goodwill	1,706	1,706
Intangible assets, net	1,393	1,748
Restricted certificates of deposit	350	450
Other assets	206	212
Total assets	38,738	35,481
Current liabilities:
Accounts payable	1,234	1,064
Accrued wages and benefits	1,528	1,635
Accrued rent	615	577
Accrued professional fees	390	367
Accrued sales commissions	328	305
Domestic and foreign income taxes payable	22	83
Other current liabilities	253	301
Total current liabilities	4,370	4,332
Commitments and Contingencies (Notes 9 and 11)
Stockholders' equity:
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; 10,595,755 and 10,590,755 shares issued, respectively	106	106
Addtional paid-in capital	26,321	26,187
Retained earnings	7,152	3,713
Accumulated other comprehensive earnings	993	1,347
Treasury stock, at cost; 33,077 and 33,077 shares, respectively	(204)	(204)
Total stockholders' equity	34,368	31,149
Total liabilities and stockholders' equity	$ 38,738	$ 35,481