Amount included in sum total to calculate borrowing base for advancing loans.

No definition available.

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Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the leverage ratio under the financial covenant in year one.

+ References

No definition available.

+ Details

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

- Definition

Represents the loan to value ratio under the financial covenant.

+ References

No definition available.

+ Details

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

- Definition

Amount of maximum capital expenditure to be incurred under the terms loan agreement covenant in year four and thereafter.

+ References

No definition available.

+ Details

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

- Definition

Amount of maximum capital expenditure to be incurred under the terms loan agreement covenant in year one.

+ References

No definition available.

+ Details

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

- Definition

Represents the trailing period used for determination of loan to value ratio under the terms of the loan covenants.

+ References

No definition available.

+ Details

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Namespace Prefix:	tpcs_
Data Type:	xbrli:durationItemType
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

Represents amount of indebtedness where it exceeds the amount specified in the agreement, which results to event of default.

+ References

No definition available.

+ Details

Name:	tpcs_DebtInstrumentEventOfDefaultExcessOfIndebtedness
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents amount of entry judgment where it exceeds the amount specified in the agreement, which results to event of default.

+ References

No definition available.

+ Details

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

- Definition

Represents the percentage of accounts receivable used for determination of the aggregate amount of advances under the revolver loan.

+ References

No definition available.

+ Details

Name:	tpcs_DebtInstrumentPercentageOfAccountsReceivableUsedForDeterminationOfAggregateAmountOfAdvances
Namespace Prefix:	tpcs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of Appraised value of equipment for determination of the aggregate amount of advances under the revolver loan.

+ References

No definition available.

+ Details

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Namespace Prefix:	tpcs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of eligible raw material inventory used for determination of the aggregate amount of advances under the revolver loan.

+ References

No definition available.

+ Details

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Namespace Prefix:	tpcs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of debt prepayment preceding to maturity Date, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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

- Definition

Amount of costs related to execution of the third modification classified as other noncurrent assets

+ References

No definition available.

+ Details

Name:	tpcs_ExecutionCostsClassifiedAsOtherNoncurrentAssets
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maximum amount of borrowing base required to grant loan advance.

+ References

No definition available.

+ Details

Name:	tpcs_MaximumAmountOfBorrowingBaseRequiredToGrantLoanAdvance
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

It represents the percentage rate of nonrefundable commitment fee.

+ References

No definition available.

+ Details

Name:	tpcs_NonrefundableCommitmentFeepercentage
Namespace Prefix:	tpcs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of payment of loan related to execution of modification.

+ References

No definition available.

+ Details

Name:	tpcs_PaymentOfLoanRelatedToExecutionOfModification
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Accumulated amortization of other deferred costs capitalized at the end of the reporting period. Does not include deferred finance costs, deferred acquisition costs of insurance companies, or deferred leasing costs for real estate operations.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
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-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Balance Type:	credit
Period Type:	instant

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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
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+ Details

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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

+ 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 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.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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

- 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

+ Details

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

- 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

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

- Details

Name:	us-gaap_DebtInstrumentAxis=tpcs_BerkshireLoanMember
Namespace Prefix:
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- Details

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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_NotesPayableOtherPayablesMember
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- Details

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DEBT - Berkshire Bank & Trust Company Loan Facility (Details)				12 Months Ended
	Dec. 23, 2019 USD ($)	Dec. 19, 2018 USD ($)	Dec. 21, 2016 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Debt Instrument [Line Items]
Revolving line of credit		$ 1,000,000
Nonrefundable Commitment Fee, Percentage		0.25%
Debt amount				$ 2,586,849	$ 4,297,349
payment related to execution of modification		$ 7,245
Berkshire Loan
Debt Instrument [Line Items]
Amounts outstanding under the revolver loan				0	$ 0
Debt Instrument Debt Service Coverage Ratio Threshold					1.2
Debt Instrument Covenant Leverage Ratio Year One					2.50
Execution Costs Classified As Other Noncurrent Assets	$ 41,628
Debt Instrument Covenant Maximum Capital Expenditures To Be Incurred Year One		$ 1,000,000
Debt Instrument Covenant Maximum Capital Expenditures To Be Incurred Year Four And Thereafter				$ 1,500,000
Debt Instrument Covenant Loan To Value Ratio				0.75
Debt Instrument Covenant Trailing Period For Measurement Of Loan To Value Ratio				365 days
Unamortized Debt Issuance Expense				$ 20,460	$ 32,982
Berkshire Loan \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum Amount Of Borrowing Base Required To Grant Loan Advance			$ 1,000,000
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
Debt Instrument, Description of Variable Rate Basis			one-month LIBOR plus 275 basis points
Accumulated Amortization of Other Deferred Costs				15,260
Berkshire Loan \| Secured Term Loan
Debt Instrument [Line Items]
Debt instrument term			60 months
Debt instrument, Periodic Payment			$ 19,260
Prepayment period			45 days
Interest at a fixed rate			5.21%
Berkshire Loan \| Restated Promissory Note
Debt Instrument [Line Items]
Maximum Amount Of Borrowing Base Required To Grant Loan Advance	$ 3,000,000
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
Debt Instrument Percentage Of Appraised Value Of Equipment For Determination Of Aggregate Amount Of Advances	50.00%
Debt Instrument, Description of Variable Rate Basis	one-month LIBOR plus 225 basis points
Berkshire Loan \| Ranor, Inc.
Debt Instrument [Line Items]
Debt Instrument Event Of Default Excess Of Indebtedness			$ 100,000
Debt Instrument Event Of Default In Excess Of Entry Of Judgment			150,000
Berkshire Loan \| Ranor, Inc. \| Revolving Credit Facility
Debt Instrument [Line Items]
Revolving line of credit			1,000,000
Berkshire Loan \| Ranor, Inc. \| Secured Term Loan
Debt Instrument [Line Items]
Term loan			$ 2,850,000
Berkshire Term Loan due January 2022
Debt Instrument [Line Items]
Debt amount				$ 2,564,389	$ 2,656,985