Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net loss	$ (11,765)	$ (7,229)
Adjustments to reconcile net loss to cash flows from operating activities:
Amortization of intangible assets	366	363
Depreciation of property and equipment	83	32
Stock-based compensation expense	1,287	1,130
Amortization of bond discount on marketable securities	0	(7)
Amortization of noncurrent portion of deferred revenue	0	(5,585)
Changes in current assets and liabilities:
Accounts receivable and other current assets	74	(44)
Accounts payable and accrued expenses	(1,497)	(141)
Deferred revenue	455	(11)
Deferred rent	(9)	(3)
Net cash used in operating activities	(11,006)	(11,495)
Cash flows from investing activities:
Purchases of marketable securities	0	(5,053)
Maturities of marketable securities	0	12,893
Purchases of property and equipment	(64)	(5)
Proceeds from sale of property and equipment	0	33
Net cash (used in) provided by investing activities	(64)	7,868
Cash flows from financing activities:
Proceeds from issuance of stock, net of issuance costs	7,044	0
Exercise of stock options	0	9
Net cash provided by financing activities	7,044	9
Effect of foreign exchange rate changes on cash and cash equivalents	4	(10)
Net decrease in cash and cash equivalents	(4,022)	(3,628)
Cash and cash equivalents at beginning of period	16,898	15,313
Cash and cash equivalents at end of period	$ 12,876	$ 11,685