Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Feb. 29, 2024	Feb. 28, 2023
Cash flows from operating activities:
Net loss	$ (170,900)	$ (30,975)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	20,895	23,316
Non-cash lease expense	1,441	1,883
Stock based compensation	8,633	8,177
Gain on disposal of assets	(54,499)	0
Transaction costs for disposition	(5,084)	0
Change in fair value of contingent consideration	203	2,084
Impairment loss on indefinite-lived intangible assets	159,476	0
Deferred income taxes	(7,143)	(1,752)
Change in accounts receivable allowances	1,007	560
Fixed and intangible asset impairments and disposals	7,084	144
Write-off of other assets	869	0
Other	161	(317)
Changes in operating assets and liabilities:
Accounts receivable	2,345	759
Inventories	(6,825)	(12,254)
Prepaid expenses and other	(7,566)	(392)
Accounts payable, accrued and other liabilities	16,744	(7,109)
Net cash used in operating activities	(33,159)	(15,876)
Cash flows from investing activities:
Additions to property, plant and equipment	(1,952)	(2,756)
Additions to placement and evaluation units	(3,245)	(4,922)
Acquisition of intangibles	(3,250)	(540)
Proceeds from sale of assets	134,500	0
Net cash provided by (used in) investing activities	126,053	(8,218)
Cash flows from financing activities:
Repayment of long-term debt	(50,000)	(45,000)
Proceeds from borrowings on long-term debt	0	70,000
Deferred financing costs on long-term debt	0	(751)
Payment of acquisition related contingent consideration	(10,000)	0
Proceeds from exercise of stock options and employee stock purchase plan	752	1,171
Net cash (used in) provided by financing activities	(59,248)	25,420
Effect of exchange rate changes on cash and cash equivalents	185	(40)
Increase in cash and cash equivalents	33,831	1,286
Cash and cash equivalents at beginning of period	44,620	28,825
Cash and cash equivalents at end of period	78,451	30,111
Supplemental disclosure of non-cash investing and financing activities:
Accrual for capital expenditures incurred during the period	$ 148	$ 140