Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Loan with Fifth Third Bank (Additional Information) (Details)

Long-Term Debt - Loan with Fifth Third Bank (Additional Information) (Details)			12 Months Ended
	Apr. 12, 2023 USD ($)	Jan. 20, 2022 USD ($) instrument	Sep. 30, 2023 USD ($)	Jul. 20, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jun. 28, 2022 USD ($)
Fifth Third Bank
Debt Instrument [Line Items]
Maturity date			Jan. 20, 2027
Kinetic
Debt Instrument [Line Items]
Credit line maximum		$ 6,000,000
Revolving line of credit
Debt Instrument [Line Items]
Credit line maximum						$ 11,000,000
Revolving line of credit \| Fifth Third Bank
Debt Instrument [Line Items]
Credit line maximum				$ 15,000,000
Revolving line of credit \| Kinetic
Debt Instrument [Line Items]
Credit line maximum						$ 24,700,000
Term Loan \| Kinetic
Debt Instrument [Line Items]
Credit line maximum		4,000,000	$ 4,000,000
Maturity date			Jan. 20, 2027
Term Loan \| Kinetic \| Fifth Third Bank
Debt Instrument [Line Items]
Letters of credit outstanding, amount			$ 3,300,000		$ 3,900,000
Term Loan One \| Kinetic
Debt Instrument [Line Items]
Credit line maximum		1,000,000	$ 1,000,000
Maturity date			Jun. 28, 2025
Term Loan One \| Kinetic \| Fifth Third Bank
Debt Instrument [Line Items]
Letters of credit outstanding, amount			$ 0		917,000
Encina Loans \| Fifth Third Bank
Debt Instrument [Line Items]
Credit line maximum		29,000,000
Reduction in interest costs and availability of liquid funds		$ 3,000,000
Letters of credit outstanding, amount			2,300,000		3,200,000
Encina Loans \| SOFR \| Fifth Third Bank
Debt Instrument [Line Items]
Percentage points added to the reference rate (in percent)		2.25%
Encina Loans \| Capital expenditure Member \| Fifth Third Bank
Debt Instrument [Line Items]
Credit line maximum		$ 2,500,000
Encina Loans \| Fifth-Third Bank Special Advance Term Loan \| Fifth Third Bank
Debt Instrument [Line Items]
Number of debt instruments \| instrument		2
Encina Loans \| Fifth-Third Bank Special Advance Term Loan \| SOFR \| Fifth Third Bank
Debt Instrument [Line Items]
Percentage points added to the reference rate (in percent)		3.75%
Encina Loans \| Revolving line of credit \| Fifth Third Bank
Debt Instrument [Line Items]
Credit line maximum		$ 23,000,000
Letters of credit outstanding, amount			23,000,000		$ 23,600,000
Encina Loans \| Revolving line of credit \| SOFR \| Fifth Third Bank
Debt Instrument [Line Items]
Percentage points added to the reference rate (in percent)		2.00%
Capex Loan \| Revolving line of credit \| Fifth Third Bank
Debt Instrument [Line Items]
Letters of credit outstanding, amount			$ 1,400,000
Advance on credit facility	$ 1,400,000