Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net loss	$ (7,162)	$ (4,933)
Adjustments to reconcile net loss to cash flows used in operating activities:
Amortization of intangible assets	183	192
Depreciation of property and equipment	6	29
Stock-based compensation expense	734	405
Amortization of bond (discount) premium on marketable securities	(5)	34
Changes in operating assets and liabilities:
Accounts receivable and other current assets	8	136
Accounts payable and accrued expenses	(240)	(350)
Deferred revenue	(8)	(8)
Deferred rent	(2)	2
Net cash used in operating activities	(6,486)	(4,493)
Cash flows from investing activities:
Purchases of marketable securities	(2,053)	(2,535)
Maturities of marketable securities	7,500	2,000
Purchases of property and equipment	0	(11)
Proceeds from sale of property and equipment	33	0
Net cash provided by (used in) investing activities	5,480	(546)
Cash flows from financing activities:
Proceeds from exercise of stock options	9	9
Net cash provided by financing activities	9	9
Effect of foreign exchange rate changes on cash and cash equivalents	(8)	(3)
Net decrease in cash and cash equivalents	(1,005)	(5,033)
Cash and cash equivalents at beginning of period	15,313	19,121
Cash and cash equivalents at end of period	$ 14,308	$ 14,088