v3.26.1
Basis of Presentation, Business Description and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
May 31, 2026
Accounting Policies [Abstract]  
Schedule of Property, Plant and Equipment Refer below for useful lives by category:
Estimated useful lives
Building and building improvements
3 to 39 years
Computer software and equipment
1 to 10 years
Machinery and equipment
3 to 11 years
Placement and evaluation units5 years
Property, plant and equipment are summarized as follows:
(in thousands)May 31, 2026May 31, 2025
Building and building improvements$16,621 $16,604 
Computer software and equipment29,738 29,038 
Machinery and equipment19,008 16,596 
Placement and evaluation units40,405 36,991 
Construction in progress1,640 3,794 
107,412 103,023 
Less accumulated depreciation(80,708)(71,116)
26,704 31,907 
Land and land improvements393 393 
$27,097 $32,300 
Schedule of Recently Issued Accounting Pronouncements
Recently Issued Accounting Pronouncements - Adopted
StandardDescriptionEffective DateEffect on the Consolidated Financial Statements
ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures
This ASU improves the income tax disclosure requirements on an annual basis by (1) disclose specific categories in the rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold. June 1, 2025The Company adopted the new standard in fiscal year 2026 and the related additional disclosures are contained in Note 9 to the consolidated financial statements in this Annual Report on Form 10-K.
Recently Issued Accounting Pronouncements - Not Yet Applicable or Adopted
StandardDescriptionEffective DateEffect on the Consolidated Financial Statements
ASU 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-04): Disaggregation of Income Statement Expenses
This ASU improves the disclosures about a public business entity's costs and expenses by requiring the Company to disclose more detailed information about the types of expenses (including purchases of inventory, employee compensation, depreciation, amortization and depletion) included in each relevant income statement caption.June 1, 2027The Company plans to adopt the new standard for the fiscal year 2028 and is assessing the impact to the consolidated financial statements.
ASU 2025-05, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets
This ASU addresses challenges encountered when applying the guidance to current account receivable and current contract assets arising from transactions accounted for under Topic 606, Revenue from Contracts with Customers.June 1, 2026The Company plans to adopt the new standard for the fiscal year 2027 and is assessing the impact to the consolidated financial statements.
ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements
This ASU improves the guidance in Topic 270 by improving the navigability of the required interim disclosures and clarifying when that guidance is applicable. The amendments also provide additional guidance on what disclosures should be provided in interim reporting periods and adds to Topic 270 a principle that requires entities to disclose events since the end of the last annual reporting period that have a material impact on the entity.June 1, 2028The Company plans to adopt the new standard for the fiscal year 2029 and is assessing the impact to the consolidated financial statements.