Debt service coverage ratio on the debt instruments.

No definition available.

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

- Definition

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

+ References

No definition available.

+ Details

Name:	tpcs_DebtInstrumentDebtServiceCoverageRatioThreshold
Namespace Prefix:	tpcs_
Data Type:	xbrli:pureItemType
Balance Type:	na
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
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

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

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
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
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-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 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

+ Details

Name:	us-gaap_UnamortizedDebtIssuanceExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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

DEBT - People's Capital and Leasing Corp. Equipment Loan Facility (Details)	1 Months Ended	12 Months Ended
	Apr. 26, 2016 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2018 USD ($)	Oct. 04, 2016 USD ($)
People's Capital and Leasing Corp
Debt Instrument [Line Items]
Debt Instrument, Debt Service Coverage Ratio		1.5
Unamortized Debt Issuance Expense		$ 66,139	$ 56,525
MLSA \| Secured Term Loan
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 365,852
MLSA \| People's Capital and Leasing Corp
Debt Instrument [Line Items]
Debt Instrument Debt Service Coverage Ratio Threshold	1.5
MLSA \| People's Capital and Leasing Corp \| 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 \| People's Capital and Leasing Corp \| Secured Term Loan \| Ranor, Inc.
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 3,011,648