Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Current assets
Cash and cash equivalents	$ 104,747	$ 107,912
Accounts receivable, net	27,316	28,472
Inventories	17,035	16,897
Marketable securities	668	704
Prepaid expenses and other current assets	6,031	5,074
Total current assets	155,797	159,059
Property and equipment, net	29,164	29,696
Patents, net	5,278	5,056
Other assets	118	129
Total assets	190,357	193,940
Current liabilities
Accounts payable	10,674	10,736
Accrued expenses	25,584	30,236
Total current liabilities	36,258	40,972
Long-term liabilities
Financing Obligation, Long Term	21,094	21,100
Deferred revenue	10,000	10,000
Other liabilities	2,902	3,479
Total liabilities	70,254	75,551
Commitments and contingencies (see Note 7)	0	0
Common stock, $0.001 par value; authorized 100,000,000 common shares at September 30, 2017 and June 30, 2017; issued and outstanding 34,136,218 at September 30, 2017 and 32,849,563 at June 30, 2017, respectively	33	33
Additional paid in capital	451,246	447,559
Accumulated other comprehensive income	104	100
Accumulated deficit	(331,280)	(329,303)
Total stockholders’ equity	120,103	118,389
Total liabilities and stockholders’ equity	$ 190,357	$ 193,940