Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities
Net loss	$ (29,579)	$ (25,504)	$ (40,209)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	18,043	18,296	19,493
Share-based compensation	13,629	12,638	13,930
Amortization of debt issuance costs	3,785	1,728	1,503
Amortization and accretion of discount and premium on investments	67	801	1,018
Accretion of interest on debt	4,052	6,321	7,241
Provision for (recovery of) bad debt, net	119	127	(14)
Provision for write-down of inventories	2,253	2,444	1,507
Loss on disposal of property and equipment	8	153	62
Loss on extinguishment of debt		965
Provision (benefit) for deferred income taxes	(268)	(404)	664
Changes in assets and liabilities:
Accounts receivable, short and long-term	(15,732)	16,994	(7,172)
Inventories	7,675	(10,502)	(21,094)
Prepaid expenses and other assets	(4,437)	16	1,083
Deferred cost of revenue	3,321	1,452	7,776
Accounts payable	2,189	2,404	(1,822)
Accrued liabilities	8,316	(1,944)	(8,614)
Customer advances	(5,158)	2,578	577
Deferred revenues	(8,663)	2,362	9,662
Net cash provided by (used in) operating activities	(380)	30,925	(14,409)
Cash flows from investing activities
Purchases of property and equipment, net	(5,031)	(8,066)	(10,445)
Purchases of intangible assets	(333)
Purchases of investments	(14,992)	(64,356)	(107,162)
Sales and maturities of investments	38,179	80,684	121,296
Net cash provided by investing activities	17,823	8,262	3,689
Cash flows from financing activities
Proceeds from employee stock plans	3,786	3,849	6,555
Taxes paid related to net share settlement of equity awards	(1,419)	(2,832)	(660)
Payments made to note and loan holders	(105,158)	(66,406)
Proceeds from debt, net of costs	48,253	64,632
Net cash provided by (used in) financing activities	(54,538)	(757)	5,895
Effect of exchange rate changes on cash and cash equivalents	197	(1,006)	(5,757)
Net increase (decrease) in cash, cash equivalents and restricted cash	(36,898)	37,424	(10,582)
Cash, cash equivalents and restricted cash at beginning of period	122,133	84,709	95,291
Cash, cash equivalents and restricted cash at end of period	85,235	122,133	84,709
Supplemental Disclosure of Cash Flow Information
Cash paid for income taxes	4,458	1,026	3,184
Cash paid for interest	9,927	10,340	7,207
Non-cash financing activity:
Purchases of property and equipment recorded in accounts payable and accrued liabilities	210	218	$ 638
Purchase of intangible assets in accrued liabilities	667
Transfers of equipment to inventory	$ 1,395	$ 1,660