Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities:
Net loss	$ (45,892)	$ (2,006)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation expense	2,998	4,029
Depreciation and amortization	1,335	1,273
Recovery of bad debts		(358)
Investment discount accretion, net	(299)	(790)
Reduction in the carrying amount of operating lease right-of-use assets	303
Collaboration revenue from Bionic Sight, LLC	(2,197)
Equity in net losses of an affiliate	47	35
Changes in operating assets and liabilities:
Grants receivable	13	186
Prepaid and other assets	(28)	1,635
Deferred revenue	149	(28,392)
Accounts payable	83	327
Operating lease liabilities	(714)
Accrued and other liabilities	2,582	604
Cash used in operating activities	(41,620)	(23,457)
Investing activities:
Purchases of property and equipment	(943)	(163)
Purchases of and capitalized costs related to intangible assets	(254)	(148)
Investment in Bionic Sight, LLC	(4,000)
Maturities of investments	72,500	94,119
Purchases of investments	(58,904)	(74,781)
Cash provided by investing activities	8,399	19,027
Financing activities:
Proceeds from the issuance of common stock, net of issuance costs	34,811
Proceeds from exercises of common stock options	393	156
Proceeds from long-term debt borrowing, net of debt discounts	9,855
Payments for deferred financing fees	(30)
Taxes paid related to equity awards	(3)	(36)
Principal payments on finance/capital lease	(45)	(52)
Cash provided by financing activities	44,981	68
Net increase (decrease) in cash and cash equivalents	11,760	(4,362)
Cash and cash equivalents, beginning of the year	26,703	31,065
Cash and cash equivalents, end of the year	38,463	26,703
Supplemental information:
Cash paid (refunds received) during the year for income taxes, net	(396)
Deferred financing fees included in accrued and other liabilities	149
Costs for purchases of property and equipment included in accrued and other liabilities	326	124
Costs for intangible assets included in accounts payable/accrued and other liabilities	$ 60	$ 59