Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
Current assets
Cash and cash equivalents	$ 60,638	$ 83,842
Accounts receivable, net	23,128	30,830
Inventories	17,440	13,966
Marketable securities	684	1,876
Prepaid expenses and other current assets	2,992	3,380
Total current assets	104,882	133,894
Property and equipment, net	32,471	32,883
Patents, net	5,013	4,511
Other assets	40	40
Total assets	142,406	171,328
Current liabilities
Accounts payable	8,506	9,763
Accrued expenses	26,993	20,125
Total current liabilities	35,499	29,888
Long-term liabilities
Other liabilities	6,010	2,005
Total liabilities	41,509	31,893
Commitments and contingencies
Common stock, $0.001 par value at June 30, 2016 and 2015; authorized 100,000,000 common shares at June 30, 2016 and 2015; issued and outstanding 32,792,497 at June 30, 2016 and 31,898,124 at June 30, 2015	33	32
Additional paid in capital	428,235	410,700
Accumulated other comprehensive income	40	90
Accumulated deficit	(327,411)	(271,387)
Total stockholders’ equity	100,897	139,435
Total liabilities and stockholders’ equity	$ 142,406	$ 171,328

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.