Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015
Current assets:
Cash and cash equivalents	$ 9,052	$ 8,264
Short-term investments	11,444	12,972
Accounts receivable, net	498	424
Inventories	1,172	1,391
Prepaid expenses and other current assets	243	310
Total current assets	22,409	23,361
Property and equipment, net	1,682	1,859
Long-term investments	1,450	3,970
Restricted cash	104	104
Total assets	25,645	29,294
Current liabilities:
Accounts payable	861	699
Accrued compensation	886	434
Other accrued liabilities	664	522
Current portion of deferred revenue	403	403
Total current liabilities	2,814	2,058
Deferred revenue, net of current portion	2,125	2,125
Notes Payable, Noncurrent	2,898	2,828
Other non-current liabilities	223	194
Total liabilities	$ 8,060	$ 7,205
Commitments and contingencies (Note 9)
Stockholders' equity:
Preferred stock, $0.001 par value: 5,000,000 shares authorized: 191,474 shares issued and outstanding at September 30, 2015, and June 30, 2015	$ 17,214	$ 17,214
Common stock, $0.001 par value: 125,000,000 shares authorized: 89,084,777 and 89,021,443 shares issued and 89,018,550 and 88,955,216 shares outstanding at September 30, 2015, and June 30, 2015, respectively	89	89
Additional paid-in capital	195,234	195,099
Treasury stock at cost (66,227 shares at September 30, 2015, and June 30, 2015)	(596)	(596)
Accumulated comprehensive loss	(5)	(8)
Accumulated deficit	(194,351)	(189,709)
Total stockholders' equity	17,585	22,089
Total liabilities and stockholders' equity	$ 25,645	$ 29,294