Represents the minimum Debt Service Coverage Ratio (DSCR) required by a loan security agreement debt covenant.

No definition available.

Name:	tpcs_DebtInstrumentDebtServiceCoverageRatioThreshold
Namespace Prefix:	tpcs_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of penalty on prepayment of a debt instrument.

+ References

No definition available.

+ Details

Name:	tpcs_DebtInstrumentPrepaymentPenaltyAmount
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=tpcs_RanorIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	srt_CounterpartyNameAxis=tpcs_PeoplescapitalandleasingcorpmemberMember
Namespace Prefix:
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Period Type:

DEBT - People's Capital and Leasing Corp. Equipment Loan Facility (Details)			1 Months Ended			12 Months Ended
	Jan. 17, 2020 USD ($)	Jan. 16, 2020 USD ($)	Jan. 31, 2020 USD ($)	Oct. 04, 2016 USD ($)	Apr. 26, 2016 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Debt Instrument [Line Items]
Repayments of Long-term Debt						$ 1,699,549	$ 752,352
Amortization of remaining debt issue costs						59,502	$ 55,247
Ranor, Inc.
Debt Instrument [Line Items]
Debt Instrument, Prepayment Penalty, Amount			$ 10,670
Amortization of remaining debt issue costs						$ 31,720
MLSA \| Secured Term Loan
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 365,852
Debt Instrument, Term				60 months
Debt Instrument, Periodic Payment				$ 7,399
MLSA \| Secured Term Loan \| Ranor, Inc.
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 936,000	$ 147,000
Debt Instrument, Prepayment Penalty, Amount	$ 9,200	$ 1,400
MLSA \| PeoplesCapitalAndLeasingCorp [Member]
Debt Instrument [Line Items]
Debt Instrument Debt Service Coverage Ratio Threshold					1.5
MLSA \| PeoplesCapitalAndLeasingCorp [Member] \| Secured Term Loan
Debt Instrument [Line Items]
Debt Instrument, Term					60 months
Debt Instrument, Interest Rate, Stated Percentage					7.90%
Debt Instrument, Periodic Payment					$ 60,921
MLSA \| PeoplesCapitalAndLeasingCorp [Member] \| Secured Term Loan \| Ranor, Inc.
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 3,011,648