SUPPLEMENTAL BALANCE SHEET INFORMATION (Tables)

12 Months Ended

Sep. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Contract Assets and Liabilities

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, 2024		Balance at September 30, 2023
Contract Assets: Trade receivables	$	65,867	$	77,618
Contract Assets: Unbilled revenue	14,624		17,211
Contract liabilities: Client deposits	24,898		36,689
Contract liabilities: Deferred revenue	17,088		18,933

Trade receivables and contract assets, net consisted of the following:

	September 30, 2024		September 30, 2023
Trade receivables	$	65,867	$	77,618
Unbilled revenue	14,624		17,211
Total	80,491		94,829
Less: Allowance for credit losses	(6,931)		(7,446)
Trade receivables and contract assets, net of allowances for credit losses	$	73,560	$	87,383

The composition of fees invoiced in advance is as follows:

	September 30, 2024		September 30, 2023
Client deposits	$	24,898	$	36,689
Deferred revenue	17,088		18,933
Fees invoiced in advance	$	41,986	$	55,622

Schedule of Inventory

Inventories, net consisted of the following:

	September 30, 2024		September 30, 2023
Raw materials	$	1,868	$	2,259
Work in progress	61		124
Finished goods	4,174		4,439
Research Model Inventory	14,870		52,524
Total	20,973		59,346
Less: Obsolescence reserve	(2,800)		(3,244)
Inventories, net	$	18,173	$	56,102

Schedule of Other Current Assets

Prepaid expenses and other current assets consisted of the following:

	September 30, 2024		September 30, 2023
Advances to suppliers	$	36,516	$	19,247
Prepaid research models	4,993		4,300
Tax-related receivables	2,602		1,813
Note receivable	1,280		1,226
Other	4,857		6,822
Prepaid expenses and other current assets	$	50,248	$	33,408

Schedule of Other Assets, Noncurrent

The composition of other assets is as follows:

	September 30, 2024		September 30, 2023
Long-term advances to suppliers	$	6,082	$	3,681
Funded status of defined benefit plan	3,142		3,036
Other	2,549		3,362
Other assets	$	11,773	$	10,079

Schedule of Property, Plant and Equipment

The Company generally depreciates the cost of its property and equipment using the straight-line method over the estimated useful lives of the respective assets as follows:

Asset	Estimated Useful Lives (in Years)
Land	Indefinite
Land improvements	5 - 20
Buildings and building improvements	10 - 40
Machinery and equipment	3 - 10
Furniture and fixtures	7 - 10
Computer hardware and software	3 - 5
Vehicles	5

The composition of property and equipment, net is as follows:

	September 30, 2024		September 30, 2023
Land and land improvements	$	30,768	$	30,710
Buildings and building improvements	140,485		120,932
Machinery and equipment	93,880		81,372
Furniture and fixtures	4,542		3,223
Other	3,355		3,664
Construction in progress	9,489		25,804
Total Cost	282,519		265,705
Accumulated depreciation	(94,191)		(74,637)
	$	188,328	$	191,068

Schedule of Accrued Liabilities

Accrued expenses consisted of the following:

	September 30, 2024		September 30, 2023
Accrued compensation	$	10,851	$	12,966
Non-income taxes	4,409		4,596
Accrued interest	3,017		2,975
Other	4,941		5,239
Resolution and Plea Agreements (Note 1)	5,000		—
Accrued expenses and other liabilities	$	28,218	$	25,776

Other Noncurrent Liabilities

The composition of other liabilities is as follows:

	September 30, 2024		September 30, 2023
Long-term client deposits	$	16,966	$	5,250
Other	997		1,123
Resolution and Plea Agreements (Note 1)	17,000		—
Other liabilities	$	34,963	$	6,373