Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Current assets
Cash and cash equivalents	$ 95	$ 2,184
Short-term investments	10,062	10,900
Accounts receivable, net of allowance	80	146
Inventory, net	132	166
Prepaid expenses and other current assets	246	269
Total current assets	10,615	13,665
Property and equipment, net	3,001	3,180
Long-term investments	1,428	1,990
Other assets, net	81	0
Total assets	15,125	18,835
Current liabilities
Accounts payable	200	259
Payroll related accruals	414	907
Accrued liabilities and other	382	641
Income tax payable	2	2
Total current liabilities	998	1,809
Other liabilities	242	256
Total liabilities	1,240	2,065
Commitments and contingencies (Note 13)
Stockholders’ equity
Preferred stock, no par value, convertible, 2,500,000 shares authorized; no shares issued and outstanding, at September 30, 2017 and June 30, 2017, respectively	0	0
Common stock, no par value, 15,000,000 shares authorized; 4,506,473 and 4,508,509 shares issued at September 30, 2017 and June 30, 2017, respectively; 4,108,573 and 4,111,281 shares outstanding at September 30, 2017 and June 30, 2017, respectively	190,437	190,382
Treasury stock, 397,936 and 397,228 shares at cost at September 30, 2017 and June 30, 2017, respectively	(4,124)	(4,121)
Additional paid-in capital	1,550	1,483
Accumulated deficit	(173,919)	(170,913)
Accumulated other comprehensive loss	(59)	(61)
Total stockholders’ equity	13,885	16,770
Total liabilities and stockholders’ equity	$ 15,125	$ 18,835