Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities
Net loss	$ (2,564)	$ (51,140)
Adjustments to reconcile net loss to net cash used in operations
Depreciation of property and equipment	2,932	2,728
Amortization and write-off of patents	883	215
Provision for doubtful accounts	315	600
Loss on disposal of property and equipment	158	8
Stock-based compensation	8,336	10,392
Changes in assets and liabilities
Accounts receivable	(5,064)	7,532
Inventories	835	(4,260)
Prepaid expenses and other assets	(153)	2,354
Accounts payable	190	(1,400)
Accrued expenses and other liabilities	615	12,771
Deferred revenue	10,000	0
Net cash provided by (used in) operating activities	16,483	(20,200)
Cash flows from investing activities
Purchases of property and equipment	(841)	(3,245)
Issuance of convertible note receivable	0	(350)
Purchases of marketable securities	0	(37)
Costs incurred in connection with patents	(496)	(512)
Net cash used in investing activities	(1,337)	(4,144)
Cash flows from financing activities
Proceeds from employee stock purchase plan	1,400	1,670
Exercise of stock options	5,002	1,006
Sale Leaseback Transaction, Net Proceeds, Financing Activities	20,944	0
Net cash provided by financing activities	27,346	2,676
Net change in cash and cash equivalents	42,492	(21,668)
Cash and cash equivalents
Beginning of period	60,638	$ 83,842
End of period	$ 103,130