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DEBT - Additional information (Details)		6 Months Ended
	Aug. 25, 2021	Sep. 30, 2021
Debt Instrument [Line Items]
Late fee (in percent)		5
Default interest rate		5
Berkshire Loan | Revolver loan
Debt Instrument [Line Items]
Quarterly tests threshold		60 days
Annual tests threshold		120 days
Berkshire Loan | Prime Rate | Revolver loan
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	0.70%
Stadco Term Loan at 3.79% interest, due August 2028 | FHLBBC advance rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.25%

X

- Definition

The percentage of default interest rate.

+ References

No definition available.

+ Details

Name:	tpcs_DefaultInterestRate
Namespace Prefix:	tpcs_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The percentage of late fee charged.

+ References

No definition available.

+ Details

Name:	tpcs_LateChargeFeePercentage
Namespace Prefix:	tpcs_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The threshold period for annual tests of debt service coverage ratio.

+ References

No definition available.

+ Details

Name:	tpcs_ThresholdPeriodForAnnualTestsOfDebtServiceCoverageRatio
Namespace Prefix:	tpcs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The threshold period for quarterly tests of debt service coverage ratio.

+ References

No definition available.

+ Details

Name:	tpcs_ThresholdPeriodForQuarterlyTestsOfDebtServiceCoverageRatio
Namespace Prefix:	tpcs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DebtInstrumentAxis=tpcs_BerkshireLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=tpcs_RevolverLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=tpcs_StadcoTermLoanAt3.79InterestDueAugust2028Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VariableRateAxis=tpcs_FederalHomeLoanBankOfBostonClassicAdvanceRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: