Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Current assets
Cash and cash equivalents	$ 116,260	$ 107,912
Accounts receivable, net	31,225	28,472
Inventories	16,605	16,897
Marketable securities	544	704
Prepaid expenses and other current assets	2,977	5,074
Total current assets	167,611	159,059
Property and equipment, net	27,744	29,696
Patents, net	5,231	5,056
Other assets	2,766	129
Total assets	203,352	193,940
Current liabilities
Accounts payable	10,441	10,736
Accrued expenses	25,776	30,236
Deferred Revenue, Current	1,243	0
Total current liabilities	37,460	40,972
Long-term liabilities
Financing obligation	21,064	21,100
Deferred revenue	8,946	10,000
Other liabilities	1,412	3,479
Total liabilities	68,882	75,551
Commitments and contingencies
Common stock, $0.001 par value; authorized 100,000,000 common shares; issued and outstanding 33,360,032 at June 30, 2018 and 32,849,563 at June 30, 2017	33	33
Additional paid in capital	461,927	447,559
Accumulated other comprehensive income	101	100
Accumulated deficit	(327,591)	(329,303)
Total stockholders’ equity	134,470	118,389
Total liabilities and stockholders’ equity	$ 203,352	$ 193,940