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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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

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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

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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

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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

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

- Definition

Represents the information Unused borrowing capacity

+ References

No definition available.

+ Details

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

- 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

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

- Definition

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

+ References

No definition available.

+ Details

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

- 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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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
-Section 45
-Paragraph 2
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+ Details

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

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

+ Details

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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

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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

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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

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

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

+ Details

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

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- Details

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Balance Type:
Period Type:

- Details

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DEBT - Berkshire Bank & Trust Company Loan Facility (Details)					3 Months Ended	12 Months Ended
	Dec. 18, 2020 USD ($)	Dec. 23, 2019 USD ($)	Dec. 31, 2016 USD ($)	Dec. 21, 2016 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2019
Revolver loan
Debt Instrument [Line Items]
Maximum Amount Of Borrowing Base Required To Grant Loan Advance		$ 3,000,000
Amount outstanding					$ 0
Interest payments					0
Unused borrowing capacity					$ 3,000,000.0	$ 2,700,000
Nonrefundable Commitment Fee, Percentage		0.25%
Berkshire Loan
Debt Instrument [Line Items]
Debt Instrument Debt Service Coverage Ratio Threshold					1.2
Debt Instrument Covenant Leverage Ratio Year One							2.50
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
Unamortized Debt Issuance Expense					$ 17,448	$ 26,272
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
Berkshire Loan \| Revolver loan
Debt Instrument [Line Items]
Amount outstanding	$ 0
Berkshire Loan \| Revolver loan \| Prime Rate
Debt Instrument [Line Items]
Adjusted interest rate (as a percent)	2.75%
Basis spread on variable rate (as a percent)	0.70%
Berkshire Loan \| Secured Term Loan
Debt Instrument [Line Items]
Principal amount of debt				$ 2,400,000
Maturity term				60 months
Interest rate (as a percent)				5.21%
Debt instrument, Periodic Payment				$ 19,260
Prepayment period				45 days
Berkshire Loan \| Restated Promissory Note
Debt Instrument [Line Items]
Principal amount of debt	$ 3,000,000
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 Covenant Trailing Period For Measurement Of Loan To Value Ratio					365 days
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]
Principal amount of debt				2,850,000
Berkshire Loan \| Minimum \| Revolver loan \| LIBOR
Debt Instrument [Line Items]
Adjusted interest rate (as a percent)	2.75%
Ranor and Berkshire \| Revolver loan
Debt Instrument [Line Items]
Revolving line of credit		$ 3,000,000
Maximum Amount Of Borrowing Base Required To Grant Loan Advance				$ 1,000,000