Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Current assets
Cash and cash equivalents	$ 633	$ 2,184
Short-term investments	7,278	10,900
Accounts receivable, net of allowance	10	146
Inventory, net	10	166
Prepaid expenses and other current assets	272	269
Total current assets	8,203	13,665
Property and equipment, net	2,808	3,180
Long-term investments	1,255	1,990
Other assets, net	81	0
Total assets	12,347	18,835
Current liabilities
Accounts payable	285	259
Payroll related accruals	549	907
Accrued liabilities and other	418	641
Income tax payable	2	2
Total current liabilities	1,254	1,809
Other liabilities	228	256
Total liabilities	1,482	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 December 31, 2017 and June 30, 2017, respectively	0	0
Common stock, no par value, 15,000,000 shares authorized; 4,505,473 and 4,508,509 shares issued at December 31, 2017 and June 30, 2017, respectively; 4,107,538 and 4,111,281 shares outstanding at December 31, 2017 and June 30, 2017, respectively	190,491	190,382
Treasury stock, 397,935 and 397,228 shares at cost at December 31, 2017 and June 30, 2017, respectively	(4,124)	(4,121)
Additional paid-in capital	1,616	1,483
Accumulated deficit	(177,056)	(170,913)
Accumulated other comprehensive loss	(62)	(61)
Total stockholders’ equity	10,865	16,770
Total liabilities and stockholders’ equity	$ 12,347	$ 18,835

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.