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DEBT - Additional Information (Details) - USD ($) |  |  |  |  |  |  |  | 6 Months Ended | 12 Months Ended |  |  |  |
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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 |  |  |  |  |  |

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- Definition Amount of the required periodic payments including both interest and principal payments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477734/942-470-50-3 + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Indicates type of variable interest rate on debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 470 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477734/942-470-50-3 + Details
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- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69E -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69E Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69F -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69F Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-6 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + References No definition available. + Details
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