CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Jun. 30, 2011
CURRENT ASSETS
Cash and cash equivalents	$ 18,343	$ 18,280
Accounts receivable, net of allowance for doubtful accounts of $24 and $26, respectively	2,600	3,065
Inventory	2,483	1,770
Prepaid and other current assets	917	857
Deferred income taxes	233	203
TOTAL CURRENT ASSETS	24,576	24,175
PROPERTY, PLANT AND EQUIPMENT, net	4,993	5,350
DEFERRED INCOME TAXES, non-current	890	748
INTANGIBLE ASSETS, net of accumulated amortization of $242 and $227, respectively	376	325
TOTAL ASSETS	30,835	30,598
CURRENT LIABILITIES
Accounts payable	1,193	965
Accrued liabilities	1,331	1,260
Deferred revenue	1,773	1,724
TOTAL CURRENT LIABILITIES	4,297	3,949
LONG-TERM DEFERRED REVENUE	329	401
OTHER LONG TERM LIABILITIES	240	383
TOTAL LIABILITIES	4,866	4,733
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common stock, $0.01 par value per share; 20,000 shares authorized; 15,096 and 15,053 shares issued and outstanding, respectively	151	151
Additional paid-in capital	22,003	21,602
Retained earnings	3,815	4,112
TOTAL STOCKHOLDERS' EQUITY	25,969	25,865
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 30,835	$ 30,598