Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Sep. 30, 2025 USD ($) customer shares	Sep. 30, 2024 USD ($) customer shares	Oct. 31, 2024
Accounting Policies [Line Items]
Net of allowance for credit losses	$ 151,000	$ 117,000
Accounts receivable, allowance for credit loss, writeoffs	68,000	30,000
Bad debt expense (benefit)	$ 102,000	$ (90,000)
Percentage of inventory estimated using LIFO method	40.00%	30.00%
Net realizable value reserves	$ 3,164,000	$ 705,000
Obsolete and excess inventory valuation reserves, net of writedown	2,755,000	2,028,000
Depreciation expense	$ 5,020,000	$ 4,784,000
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares) | shares	143,000	238,000
Research and development expense	$ 0	$ 0
Employee Retention Credit Program
Accounting Policies [Line Items]
Gross benefit	4,173,000	0
Proceeds from employee retention credit refund	3,482,000
Interest income	690,000
Professional fees		835,000
Interest expense		$ 0
Employee Retention Credit Program | Cost of goods
Accounting Policies [Line Items]
Gross benefit	$ 2,971,000
Government Assistance, Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of goods sold
Employee Retention Credit Program | Selling, general and administrative expenses
Accounting Policies [Line Items]
Gross benefit	$ 511,000
Government Assistance, Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, general and administrative expenses
Employee Retention Credit Program | Other (income) expense
Accounting Policies [Line Items]
Gross benefit	$ 690,000
Government Assistance, Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)
Performance shares
Accounting Policies [Line Items]
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares) | shares	0
Restricted shares
Accounting Policies [Line Items]
Anti-dilutive weighted-average common shares excluded from calculation of diluted earnings per share (in shares) | shares	0
Minimum
Accounting Policies [Line Items]
Finite-lived intangible asset, useful life (in years)	1 year
Minimum | Building and Building Improvements
Accounting Policies [Line Items]
Property, plant and equipment, useful life	5 years
Minimum | Machinery and equipment
Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Minimum | Software
Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Minimum | Leasehold Improvements
Accounting Policies [Line Items]
Property, plant and equipment, useful life	6 years
Maximum
Accounting Policies [Line Items]
Finite-lived intangible asset, useful life (in years)	10 years
Maximum | Building and Building Improvements
Accounting Policies [Line Items]
Property, plant and equipment, useful life	40 years
Maximum | Machinery and equipment
Accounting Policies [Line Items]
Property, plant and equipment, useful life	20 years
Maximum | Software
Accounting Policies [Line Items]
Property, plant and equipment, useful life	7 years
Maximum | Leasehold Improvements
Accounting Policies [Line Items]
Property, plant and equipment, useful life	15 years
Customer One | Sales Revenue, Net | Customer Concentration Risk
Accounting Policies [Line Items]
Percentage of concentration risk	18.00%	15.00%
Number of major customers | customer	1	1
Customer One | Accounts Receivable | Customer Concentration Risk
Accounting Policies [Line Items]
Percentage of concentration risk	17.00%	10.00%
Number of major customers | customer	1	0
Three Customers And Their Direct Subcontractors | Sales Revenue, Net | Customer Concentration Risk
Accounting Policies [Line Items]
Percentage of concentration risk		41.00%
Number of major customers | customer		3
Two Customers And Their Direct Subcontractors | Sales Revenue, Net | Customer Concentration Risk
Accounting Policies [Line Items]
Percentage of concentration risk	34.00%
Number of major customers | customer	2
Two Customers And Their Direct Subcontractors | Accounts Receivable | Customer Concentration Risk
Accounting Policies [Line Items]
Percentage of concentration risk	36.00%	22.00%
Number of major customers | customer	2	2
Major Customer One and Their Subcontractors | Sales Revenue, Net | Customer Concentration Risk
Accounting Policies [Line Items]
Percentage of concentration risk	18.00%	11.00%
Major Customer Two and Their Subcontractors | Sales Revenue, Net | Customer Concentration Risk
Accounting Policies [Line Items]
Percentage of concentration risk	16.00%	15.00%
Major Customer Three and Their Subcontractors | Sales Revenue, Net | Customer Concentration Risk
Accounting Policies [Line Items]
Percentage of concentration risk		15.00%
Discontinued Operations, Disposed of by Sale | C Blade
Accounting Policies [Line Items]
Percentage acquired			100.00%