Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities
Net income (loss)	$ (6,311)	$ 3,827	$ (16,430)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	6,389	7,541	10,491
Share-based compensation	9,332	8,152	10,601
Amortization of debt issuance costs	1,356	1,348	1,528
Accretion of interest on debt	4,887	4,168	3,371
Provision for credit losses	133	1,797	3,681
Non-cash revenue transactions related to joint venture	(1,365)
Provision for write-down of inventories	6,914	4,184	2,340
Loss on disposal of property and equipment	106	9	2,588
(Income) loss on equity method investment	(872)	149
Release (deferral) of equity method investment intra-entity profit on sales	310	1,847
Loss on extinguishment of debt	9,948
Gain on termination of lease obligation			(1,007)
Gain on contribution to joint venture		(12,964)
Provision (benefit) for deferred income taxes	(114)	353	(86)
Changes in assets and liabilities:
Accounts receivable, short and long-term	5,235	19,030	(46,165)
Inventories	1,688	(23,178)	(14,165)
Prepaid expenses and other assets	(951)	4,403	(13,049)
Deferred cost of revenue, short and long-term	(296)	(2,441)	531
Accounts payable	(3,978)	(6,770)	9,456
Operating lease liabilities, net	(663)	(235)
Accrued liabilities	8,089	(16,595)	10,857
Customer advances	2,237	2,159	(2,549)
Deferred revenues, short and long-term	(3,562)	1,747	8,366
Net cash provided by (used in) operating activities	38,512	(1,469)	(29,641)
Cash flows from investing activities
Purchases of property and equipment, net	(2,320)	(3,558)	(4,311)
Purchase of intangible assets		(170)
Additional investments in joint venture	(79)
Net cash (used in) investing activities	(2,399)	(3,728)	(4,311)
Cash flows from financing activities
Proceeds from employee stock plans	2,175	2,450	3,927
Proceeds from exercise of options	855
Taxes paid related to net share settlement of equity awards	(343)	(207)
Convertible senior notes exchange and issued, net of issuance costs	(142)
Paydown and Repayment of Prior Term Loan and Prior Revolving Credit Facility, net	(115,924)
Proceeds from New debt, net of costs	103,654	24,716	19,968
Borrowings (repayments) under the New Revolving Credit Facility, net	(5,000)	(263)	4,578
Stock repurchase	(14,080)
Net cash provided by (used in) financing activities	(28,805)	26,696	28,473
Effect of exchange rate changes on cash, cash equivalents and restricted cash	982	234	124
Net increase (decrease) in cash, cash equivalents and restricted cash	8,290	21,733	(5,355)
Cash, cash equivalents and restricted cash at beginning of period	109,911	88,178	93,533
Cash, cash equivalents and restricted cash at end of period	118,201	109,911	88,178
Supplemental Disclosure of Cash Flow Information
Cash paid for income taxes	1,873	2,806	2,191
Cash paid for interest	11,892	12,332	9,761
Supplemental non-cash disclosure:
Non-cash effect of pension settlement accounting		178
Prior convertible note exchanged	(82,135)
New convertible note exchanged	97,148
Unpaid purchase of property and equipment at end of year	555	226	235
Transfers from inventory to property and equipment	$ 564	2,594	$ 1,170
Equity method investment, in exchange for non-cash contributions of assets to China Joint Venture (including gain of $12,964)		$ 15,925