Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014
Current assets
Cash and cash equivalents	$ 116,423	$ 126,592
Accounts receivable, net	22,376	21,383
Inventories	14,644	12,890
Prepaid expenses and other current assets	3,587	1,846
Total current assets	157,030	162,711
Property and equipment, net	21,238	15,297
Patents, net	4,015	3,823
Other assets	70	70
Total assets	182,353	181,901
Current liabilities
Short-term borrowings	1,200	2,400
Accounts payable	18,196	12,699
Accrued expenses	12,619	14,630
Total current liabilities	32,015	29,729
Long-term liabilities
Other liabilities	1,891	117
Total liabilities	33,906	29,846
Commitments and contingencies	0	0
Common stock, $0.001 par value; authorized 100,000,000 common shares at September 30, 2014 and June 30, 2014; issued and outstanding 31,456,377 at September 30, 2014 and 31,084,742 at June 30, 2014, respectively	31	31
Additional paid in capital	395,205	390,589
Accumulated deficit	(246,789)	(238,565)
Total stockholders’ equity	148,447	152,055
Total liabilities and stockholders’ equity	$ 182,353	$ 181,901