Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Current assets
Cash and cash equivalents	$ 103,130	$ 60,638
Accounts receivable, net	27,877	23,128
Inventories	16,605	17,440
Marketable securities	741	684
Prepaid expenses and other current assets	3,479	2,992
Total current assets	151,832	104,882
Property and equipment, net	30,213	32,471
Patents, net	4,752	5,013
Other assets	60	40
Total assets	186,857	142,406
Current liabilities
Accounts payable	8,813	8,506
Accrued expenses	29,837	26,993
Total current liabilities	38,650	35,499
Long-term liabilities
Financing Obligation, Long Term	20,973	0
Deferred revenue	10,000	0
Other liabilities	3,752	6,010
Total liabilities	73,375	41,509
Commitments and contingencies (see Note 6)	0	0
Common stock, $0.001 par value; authorized 100,000,000 common shares at March 31, 2017 and June 30, 2016; issued and outstanding 32,703,971 at March 31, 2017 and 32,792,497 at June 30, 2016, respectively	33	33
Additional paid in capital	443,427	428,235
Accumulated other comprehensive income	97	40
Accumulated deficit	(330,075)	(327,411)
Total stockholders’ equity	113,482	100,897
Total liabilities and stockholders’ equity	$ 186,857	$ 142,406