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REVENUE FROM CONTRACTS WITH CLIENTS
 12 Months Ended
Sep. 30, 2025
Revenue from Contract with Customer [Abstract]  
REVENUE FROM CONTRACTS WITH CLIENTS REVENUE FROM CONTRACTS WITH CLIENTS
DSA
The DSA segment generates service revenue through drug discovery and development services. The DSA segment generates product revenue through internally-manufactured scientific instruments for life sciences research and the related software for use by pharmaceutical companies, universities, government research centers and medical research institutions under the Company’s BASi product line. Refer to Note 2 - Basis of Presentation and Summary of Significant Accounting Policies for further discussion of DSA revenue and related accounting policies.
RMS
The RMS segment generates products revenue through the commercial production and sale of research models, diets, bedding, enrichment and bioproducts. The RMS segment generates service revenue through GEMS, client-owned animal colony care, and health monitoring and diagnostics services related to research models. Refer to Note 2 - Basis of Presentation and Summary of Significant Accounting Policies for further discussion of RMS revenue and related accounting policies.
Contract Assets and Liabilities from Contracts with Clients
The timing of revenue recognition, billings and cash collections results in billed receivables (trade receivables), contract assets (unbilled revenue), and contract liabilities (client deposits and deferred revenue) on the consolidated balance sheets.
The following table provides information about contract assets (trade receivables and unbilled revenue, excluding allowances for credit losses), and fees invoiced in advance (client deposits and deferred revenue):
Balance at
September 30,
2025		Balance at
September 30,
2024
Contract Assets: Trade receivables$74,156 $65,867 
Contract Assets: Unbilled revenue10,463 14,624 
Contract liabilities: Client deposits33,152 24,898 
Contract liabilities: Deferred revenue18,360 17,088 

When the Company does not have the unconditional right to advanced billings, both advanced client payments and unpaid advanced client billings are excluded from deferred revenue, with the advanced billings also being excluded from client receivables. The Company excluded approximately $12,167 and $10,399 of unpaid advanced client billings from both client receivables and deferred revenue as of September 30, 2025 and September 30, 2024, respectively.
The Company expects approximately 77% of deferred revenue as of September 30, 2025 to be recognized as revenue in fiscal year 2026 and the remainder to be recognized thereafter during the remaining contract term.
Changes in the contract asset and the contract liability balances during the twelve months ended September 30, 2025 include the following:
•A change in the time frame for a right for consideration to become unconditional – Approximately 81% of unbilled revenue as of September 30, 2024, was billed during fiscal year 2025.
•A change in the time frame for a performance obligation to be satisfied – Approximately 73% of contract liabilities as of September 30, 2024, were recognized as revenue during fiscal year 2025.
Allowance for Credit Losses
A summary of activity in our allowance for credit losses is as follows:
Fiscal Years Ended
September 30,
202520242023
Opening balance$6,931 $7,446 $6,268 
Charged to expense(492)58 1,271 
Uncollectible invoices written off(42)(823)(107)
Amounts collected— 250 14 
Ending balance$6,397 $6,931 $7,446