CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
Current assets:
Cash and cash equivalents	$ 5,984	$ 9,590
Short-term investments	59,932	64,899
Total cash, cash equivalents and short-term investments	65,916	74,489
Common stock proceeds receivable (Note 10)		5,274
Prepaid expenses and other current assets	2,135	2,435
Total current assets	68,051	82,198
Intangible assets, net	253	261
Property and equipment, net	619	204
Total assets	68,923	82,663
Current liabilities:
Accounts payable	3,098	4,787
Accrued liabilities	3,295	4,559
Deferred revenue	3,675	4,955
Total current liabilities	10,068	14,301
Deferred revenue, long-term	3,231	2,819
Warrant liability	8,344	17,613
Total liabilities	21,643	34,733
Commitments and contingencies (Note 7)
Stockholders' equity:
Preferred stock, $0.01 par value; 100 shares authorized; none outstanding
Common stock, $0.00000002 par value; 226,000 shares authorized; 73,655 and 73,545 shares issued and outstanding at September 30, 2019 and June 30, 2019, respectively
Additional paid-in-capital	281,492	279,148
Accumulated deficit	(234,212)	(231,218)
Total stockholders' equity	47,280	47,930
Total liabilities and stockholders' equity	$ 68,923	$ 82,663

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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).