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Amount of capital expenditures from purchase of fixed assets.

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Weighted average interest rate of debt outstanding.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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DEBT - Additional Information (Details) - USD ($)								6 Months Ended		12 Months Ended
DEBT - Additional Information (Details) - USD ($)	Jun. 01, 2024	May 31, 2024	Mar. 20, 2024	Dec. 20, 2023	Dec. 23, 2022	Aug. 25, 2021	Dec. 21, 2016	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2024	May 28, 2024	May 24, 2024	May 23, 2024	Jan. 20, 2017
DEBT
Maximum amount of borrowing base required to grant loan advance								$ 5,000,000
Weighted average amount outstanding								2,286,000
Capital expenditures								1,622,000	$ 2,659,000
Basis spread on variable rate (as a percent)	2.50%	2.25%
Revolver loan
DEBT
Maximum principal amount											$ 4,500,000	$ 4,500,000	$ 5,000,000
Interest payments								$ 90,000	$ 83,000
Stadco Term Loan, at 3.79% interest, due August 2028
DEBT
Principal amount of debt						$ 4,000,000
Maturity term						7 years
Monthly payments of principal and interest amount						$ 54,000
Interest rate (as a percent)								3.79%		3.79%
Debt Instrument, Face Amount						$ 4,000,000
Unamortized debt issuance expense								$ 24,000		$ 30,000
Basis spread on variable rate (as a percent)						2.25%
Stadco Term Loan, at 3.79% interest, due August 2028 \| Ranor, Inc.
DEBT
Unamortized debt issuance expense										$ 59,000
Stadco Term Loan, at 3.79% interest, due August 2028 \| Ranor, Inc. \| Revolver loan
DEBT
Principal amount of debt						$ 4,000,000
Debt Instrument, Face Amount						$ 4,000,000
Stadco Term Loan at 3.79% interest, due August 2028.
DEBT
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]						tpcs:FederalHomeLoanBankOfBostonClassicAdvanceRateMember
Ranor term loan
DEBT
Weighted average interest rate (as a percent)								7.81%		7.60%
Unused borrowing capacity								$ 1,143,000		$ 539,000
Ranor term loan \| Revolving Credit Facility
DEBT
Maximum amount of borrowing base required to grant loan advance							$ 5,000,000
Ranor term loan \| Revolver loan
DEBT
Maximum principal amount							$ 5,000,000
Ranor term loan \| Ranor, Inc.
DEBT
Proceeds limit from term loan						$ 2,850,000
Unamortized debt issuance expense								75,000
Berkshire Loan
DEBT
Amount of debt outstanding								7,154,000
Annual capital expenditure								1,500,000
Berkshire Loan \| Revolving Credit Facility
DEBT
Debt instrument percentage of accounts receivable used for determination of aggregate amount of advances							80.00%
Debt instrument percentage of eligible raw material used for determination of aggregate amount of advances							25.00%
Amount included in sum to calculate maximum borrowing base							$ 250,000
Berkshire Loan \| Revolver loan
DEBT
Proceeds limit from term loan			$ 2,000	$ 1,000
Weighted average amount outstanding								$ 2,600,000
Nonrefundable commitment fee percentages								0.25%
Berkshire Loan \| Secured Term Loan
DEBT
Monthly payments of principal and interest amount					$ 19,000
Interest rate (as a percent)														5.21%
Berkshire Loan \| Notes payables
DEBT
Debt Instrument percentage of appraised value Of equipment for determination of aggregate amount of advances							80.00%
Berkshire Loan \| Ranor, Inc.
DEBT
Debt instrument covenant trailing period for measurement of loan to value ratio								365 days
Berkshire Loan \| Ranor, Inc. \| Secured Term Loan
DEBT
Principal amount of debt							$ 2,850,000,000
Debt Instrument, Face Amount							$ 2,850,000,000
Berkshire Loan \| Minimum
DEBT
Cash flow ratio of debt service								1
Debt instrument covenant leverage ratio year one								1
Loan-to-Value Ratio								1
Berkshire Loan \| Maximum
DEBT
Cash flow ratio of debt service								1.2
Debt instrument covenant leverage ratio year one								2.5
Loan-to-Value Ratio								0.75