Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Current assets
Cash and cash equivalents	$ 552	$ 2,184
Short-term investments	3,551	10,900
Accounts receivable	12	146
Inventory, net	7	166
Prepaid expenses and other current assets	154	269
Total current assets	4,276	13,665
Property and equipment, net	733	3,180
Long-term investments	50	1,990
Other assets, net	81	0
Total assets	5,140	18,835
Current liabilities
Accounts payable	112	259
Payroll related accruals	412	907
Accrued and other liabilities	434	641
Income tax payable	2	2
Total current liabilities	960	1,809
Other liabilities	188	256
Total liabilities	1,148	2,065
Commitments and contingencies (Note 15)
Stockholders’ equity
Preferred stock, $0.001 par value, convertible, 2,500,000 shares authorized, no shares issued and outstanding at June 30, 2018 and June 30, 2017
Common stock, $0.001 par value, 15,000,000 shares authorized; 4,496,873 and 4,508,509 shares issued at June 30, 2018 and June 30, 2017, respectively; 4,097,346 and 4,111,281 shares outstanding at June 30, 2018 and June 30, 2017, respectively	190,570	190,382
Treasury stock, 399,527 and 397,228 shares at cost at June 30, 2018 and June 30, 2017, respectively	(4,128)	(4,121)
Additional paid-in capital	1,745	1,483
Accumulated deficit	(184,164)	(170,913)
Accumulated other comprehensive loss	(31)	(61)
Total stockholders’ equity	3,992	16,770
Total liabilities and stockholders’ equity	$ 5,140	$ 18,835