Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Current assets
Cash and cash equivalents	$ 1,906	$ 552
Short-term investments		3,551
Accounts receivable, net of allowance	29	12
Inventory, net		7
Prepaid expenses and other current assets	270	154
Total current assets	2,205	4,276
Property and equipment, net	664	733
Long-term investments		50
Other assets, net	81	81
Total assets	2,950	5,140
Current liabilities
Accounts payable	105	112
Payroll related accruals	313	412
Accrued liabilities and other	526	434
Income tax payable	2	2
Total current liabilities	946	960
Other liabilities	177	188
Total liabilities	1,123	1,148
Commitments and contingencies (Note 13)
Stockholders’ equity
Preferred stock, $0.001 par value, convertible, 2,500,000 shares authorized, no shares issued and outstanding, at September 30, 2018 and June 30, 2018, respectively
Common stock, $0.001 par value, 15,000,000 shares authorized; 4,495,290 and 4,496,873 shares issued at September 30, 2018 and June 30, 2018, respectively; 4,095,374 and 4,097,346 shares outstanding at September 30, 2018 and June 30, 2018, respectively	190,565	190,570
Treasury stock, 399,916 and 399,527 shares at cost at September 30, 2018 and June 30, 2018, respectively	(4,129)	(4,128)
Additional paid-in capital	1,793	1,745
Accumulated deficit	(186,402)	(184,164)
Accumulated other comprehensive loss		(31)
Total stockholders’ equity	1,827	3,992
Total liabilities and stockholders’ equity	$ 2,950	$ 5,140