<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.23.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>201</ContextCount>
  <ElementCount>421</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>89</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>7</UnitCount>
  <MyReports>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00090 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00100 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/StatementConsolidatedBalanceSheets</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00105 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/StatementConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00200 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/StatementConsolidatedStatementsOfOperationsAndComprehensiveLoss</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00300 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/StatementConsolidatedStatementsOfStockholdersEquity</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00400 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/StatementConsolidatedStatementsOfCashFlows</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>00405 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/StatementConsolidatedStatementsOfCashFlowsParenthetical</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>10101 - Disclosure - DESCRIPTION OF BUSINESS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureDescriptionOfBusiness</Role>
      <ShortName>DESCRIPTION OF BUSINESS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>10201 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBasisOfPresentationAndSignificantAccountingPolicies</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>10301 - Disclosure - BUSINESS COMBINATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBusinessCombination</Role>
      <ShortName>BUSINESS COMBINATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>10401 - Disclosure - REVENUE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureRevenue</Role>
      <ShortName>REVENUE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>10501 - Disclosure - INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureIncomeTaxes</Role>
      <ShortName>INCOME TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>10601 - Disclosure - CAPITAL STOCK and EARNINGS PER SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureCapitalStockAndEarningsPerShare</Role>
      <ShortName>CAPITAL STOCK and EARNINGS PER SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>10701 - Disclosure - STOCK-BASED COMPENSATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureStockBasedCompensation</Role>
      <ShortName>STOCK-BASED COMPENSATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>10801 - Disclosure - CONCENTRATION OF CREDIT RISK</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureConcentrationOfCreditRisk</Role>
      <ShortName>CONCENTRATION OF CREDIT RISK</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>10901 - Disclosure - OTHER CURRENT ASSETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureOtherCurrentAssets</Role>
      <ShortName>OTHER CURRENT ASSETS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>11001 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosurePropertyPlantAndEquipmentNet</Role>
      <ShortName>PROPERTY, PLANT AND EQUIPMENT, NET</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>11101 - Disclosure - ACCRUED EXPENSES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureAccruedExpenses</Role>
      <ShortName>ACCRUED EXPENSES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>11201 - Disclosure - DEBT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureDebt</Role>
      <ShortName>DEBT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>11301 - Disclosure - OTHER NONCURRENT LIABILITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureOtherNoncurrentLiability</Role>
      <ShortName>OTHER NONCURRENT LIABILITY</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>11401 - Disclosure - LEASES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureLeases</Role>
      <ShortName>LEASES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>11501 - Disclosure - COMMITMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureCommitments</Role>
      <ShortName>COMMITMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>11601 - Disclosure - SEGMENT INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureSegmentInformation</Role>
      <ShortName>SEGMENT INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>11701 - Disclosure - ACCOUNTING STANDARDS UPDATE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureAccountingStandardsUpdate</Role>
      <ShortName>ACCOUNTING STANDARDS UPDATE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>20202 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesPolicies</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>30203 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesTables</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureBasisOfPresentationAndSignificantAccountingPolicies</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>30303 - Disclosure - BUSINESS COMBINATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBusinessCombinationTables</Role>
      <ShortName>BUSINESS COMBINATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureBusinessCombination</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>30403 - Disclosure - REVENUE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureRevenueTables</Role>
      <ShortName>REVENUE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureRevenue</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>30503 - Disclosure - INCOME TAXES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureIncomeTaxesTables</Role>
      <ShortName>INCOME TAXES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureIncomeTaxes</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>30603 - Disclosure - CAPITAL STOCK and EARNINGS PER SHARE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureCapitalStockAndEarningsPerShareTables</Role>
      <ShortName>CAPITAL STOCK and EARNINGS PER SHARE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureCapitalStockAndEarningsPerShare</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>30703 - Disclosure - STOCK-BASED COMPENSATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureStockBasedCompensationTables</Role>
      <ShortName>STOCK-BASED COMPENSATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureStockBasedCompensation</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>30803 - Disclosure - CONCENTRATION OF CREDIT RISK (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureConcentrationOfCreditRiskTables</Role>
      <ShortName>CONCENTRATION OF CREDIT RISK (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureConcentrationOfCreditRisk</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>30903 - Disclosure - OTHER CURRENT ASSETS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureOtherCurrentAssetsTables</Role>
      <ShortName>OTHER CURRENT ASSETS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureOtherCurrentAssets</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>31003 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosurePropertyPlantAndEquipmentNetTables</Role>
      <ShortName>PROPERTY, PLANT AND EQUIPMENT, NET (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosurePropertyPlantAndEquipmentNet</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>31103 - Disclosure - ACCRUED EXPENSES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureAccruedExpensesTables</Role>
      <ShortName>ACCRUED EXPENSES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureAccruedExpenses</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>31203 - Disclosure - DEBT (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureDebtTables</Role>
      <ShortName>DEBT (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureDebt</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>31403 - Disclosure - LEASES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureLeasesTables</Role>
      <ShortName>LEASES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureLeases</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>31603 - Disclosure - SEGMENT INFORMATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureSegmentInformationTables</Role>
      <ShortName>SEGMENT INFORMATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureSegmentInformation</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>40201 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Accounts receivable and allowance for doubtful accounts, Property, plant and equipment, net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesAccountsReceivableAndAllowanceForDoubtfulAccountsPropertyPlantAndEquipmentNetDetails</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Accounts receivable and allowance for doubtful accounts, Property, plant and equipment, net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>40202 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Estimated fair values of the Company's financial instrument liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesEstimatedFairValuesOfCompanySFinancialInstrumentLiabilitiesDetails</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Estimated fair values of the Company's financial instrument liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>40203 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Summary of Changes in Level 3 fair value measurements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesSummaryOfChangesInLevel3FairValueMeasurementsDetails</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Summary of Changes in Level 3 fair value measurements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>40204 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - SG&amp;A, Stock Based Compensation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesSgStockBasedCompensationDetails</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - SG&amp;A, Stock Based Compensation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>40205 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Foreign currency translation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBasisOfPresentationAndSignificantAccountingPoliciesForeignCurrencyTranslationDetails</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Foreign currency translation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>40301 - Disclosure - BUSINESS COMBINATION - Additional information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBusinessCombinationAdditionalInformationDetails</Role>
      <ShortName>BUSINESS COMBINATION - Additional information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>40302 - Disclosure - BUSINESS COMBINATION - Assets acquired and liabilities assumed on the acquisition date (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBusinessCombinationAssetsAcquiredAndLiabilitiesAssumedOnAcquisitionDateDetails</Role>
      <ShortName>BUSINESS COMBINATION - Assets acquired and liabilities assumed on the acquisition date (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>40303 - Disclosure - BUSINESS COMBINATION - Proforma results (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureBusinessCombinationProformaResultsDetails</Role>
      <ShortName>BUSINESS COMBINATION - Proforma results (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>40401 - Disclosure - REVENUE - Disaggregated basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureRevenueDisaggregatedBasisDetails</Role>
      <ShortName>REVENUE - Disaggregated basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>40402 - Disclosure - REVENUE - Net sales from customers (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureRevenueNetSalesFromCustomersDetails</Role>
      <ShortName>REVENUE - Net sales from customers (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>40403 - Disclosure - REVENUE - Contract assets and contract liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureRevenueContractAssetsAndContractLiabilitiesDetails</Role>
      <ShortName>REVENUE - Contract assets and contract liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>40404 - Disclosure - REVENUE - Additional information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureRevenueAdditionalInformationDetails</Role>
      <ShortName>REVENUE - Additional information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>40501 - Disclosure - INCOME TAXES - Income tax provision (benefit) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureIncomeTaxesIncomeTaxProvisionBenefitDetails</Role>
      <ShortName>INCOME TAXES - Income tax provision (benefit) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>40502 - Disclosure - INCOME TAXES - U.S. Federal Statutory Rate To Actual Tax Provision (Benefit) For Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureIncomeTaxesUsFederalStatutoryRateToActualTaxProvisionBenefitForIncomeTaxesDetails</Role>
      <ShortName>INCOME TAXES - U.S. Federal Statutory Rate To Actual Tax Provision (Benefit) For Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>40503 - Disclosure - INCOME TAXES - Deferred Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureIncomeTaxesDeferredTaxesDetails</Role>
      <ShortName>INCOME TAXES - Deferred Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>40504 - Disclosure - INCOME TAXES - Carryforwards and Unrecognized Tax Benefits (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureIncomeTaxesCarryforwardsAndUnrecognizedTaxBenefitsDetails</Role>
      <ShortName>INCOME TAXES - Carryforwards and Unrecognized Tax Benefits (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>40601 - Disclosure - CAPITAL STOCK and EARNINGS PER SHARE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureCapitalStockAndEarningsPerShareDetails</Role>
      <ShortName>CAPITAL STOCK and EARNINGS PER SHARE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureCapitalStockAndEarningsPerShareTables</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>40602 - Disclosure - CAPITAL STOCK and EARNINGS PER SHARE - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureCapitalStockAndEarningsPerShareAdditionalInformationDetails</Role>
      <ShortName>CAPITAL STOCK and EARNINGS PER SHARE - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>40701 - Disclosure - STOCK-BASED COMPENSATION - Stock option activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureStockBasedCompensationStockOptionActivityDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - Stock option activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>40702 - Disclosure - STOCK-BASED COMPENSATION - Stock options outstanding by exercise price (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureStockBasedCompensationStockOptionsOutstandingByExercisePriceDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - Stock options outstanding by exercise price (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>40703 - Disclosure - STOCK-BASED COMPENSATION - Additional information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureStockBasedCompensationAdditionalInformationDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - Additional information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>40704 - Disclosure - STOCK-BASED COMPENSATION - Board of directors common stock award (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureStockBasedCompensationBoardOfDirectorsCommonStockAwardDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - Board of directors common stock award (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>40801 - Disclosure - CONCENTRATION OF CREDIT RISK (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureConcentrationOfCreditRiskDetails</Role>
      <ShortName>CONCENTRATION OF CREDIT RISK (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureConcentrationOfCreditRiskTables</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>40901 - Disclosure - OTHER CURRENT ASSETS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureOtherCurrentAssetsDetails</Role>
      <ShortName>OTHER CURRENT ASSETS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureOtherCurrentAssetsTables</ParentRole>
      <Position>62</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>41001 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosurePropertyPlantAndEquipmentNetDetails</Role>
      <ShortName>PROPERTY, PLANT AND EQUIPMENT, NET (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosurePropertyPlantAndEquipmentNetTables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>41101 - Disclosure - ACCRUED EXPENSES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureAccruedExpensesDetails</Role>
      <ShortName>ACCRUED EXPENSES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureAccruedExpensesTables</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>41201 - Disclosure - DEBT - Long-term Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureDebtLongTermDebtDetails</Role>
      <ShortName>DEBT - Long-term Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>41202 - Disclosure - DEBT - Scheduled principal maturities for our total debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureDebtScheduledPrincipalMaturitiesForOurTotalDebtDetails</Role>
      <ShortName>DEBT - Scheduled principal maturities for our total debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>41203 - Disclosure - DEBT - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureDebtAdditionalInformationDetails</Role>
      <ShortName>DEBT - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>41204 - Disclosure - DEBT - Small Business Administrative PPP loan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureDebtSmallBusinessAdministrativePppLoanDetails</Role>
      <ShortName>DEBT - Small Business Administrative PPP loan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>41301 - Disclosure - OTHER NONCURRENT LIABILITY (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureOtherNoncurrentLiabilityDetails</Role>
      <ShortName>OTHER NONCURRENT LIABILITY (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureOtherNoncurrentLiability</ParentRole>
      <Position>69</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>41401 - Disclosure - LEASES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureLeasesDetails</Role>
      <ShortName>LEASES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureLeasesTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>41402 - Disclosure - LEASES - Other supplemental information of Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureLeasesOtherSupplementalInformationOfLeasesDetails</Role>
      <ShortName>LEASES - Other supplemental information of Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>41403 - Disclosure - LEASES - Supplemental cash flow information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureLeasesSupplementalCashFlowInformationDetails</Role>
      <ShortName>LEASES - Supplemental cash flow information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>41404 - Disclosure - LEASES - Maturities of lease liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureLeasesMaturitiesOfLeaseLiabilitiesDetails</Role>
      <ShortName>LEASES - Maturities of lease liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>41501 - Disclosure - COMMITMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureCommitmentsDetails</Role>
      <ShortName>COMMITMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.tech.pre.com/role/DisclosureCommitments</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="tpcs-20230331x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>41601 - Disclosure - SEGMENT INFORMATION - Financial information for segments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.tech.pre.com/role/DisclosureSegmentInformationFinancialInformationForSegmentsDetails</Role>
      <ShortName>SEGMENT INFORMATION - Financial information for segments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Warning">[ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 8 fact(s) appearing in ix:hidden were eligible for transformation: tpcs:BusinessAcquisitionsProformaWeightedAverageSharesOutstandingDiluted, us-gaap:CommonStockSharesIssued, us-gaap:CommonStockSharesOutstanding, us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic, us-gaap:RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1, us-gaap:StockholdersEquityNoteStockSplitConversionRatio1 -  tpcs-20230331x10k.htm 9</Log>
    <Log type="Warning">[ix-0514-Hidden-Fact-Not-Referenced] WARN: 4 fact(s) appearing in ix:hidden were not referenced by any -sec-ix-hidden style property: us-gaap:CommitmentsAndContingencies, us-gaap:FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList -  tpcs-20230331x10k.htm 9</Log>
  </Logs>
  <InputFiles>
    <File doctype="10-K" original="tpcs-20230331x10k.htm">tpcs-20230331x10k.htm</File>
    <File>tpcs-20230331.xsd</File>
    <File>tpcs-20230331_cal.xml</File>
    <File>tpcs-20230331_def.xml</File>
    <File>tpcs-20230331_lab.xml</File>
    <File>tpcs-20230331_pre.xml</File>
    <File>tpcs-20230331xex21d1.htm</File>
    <File>tpcs-20230331xex23d1.htm</File>
    <File>tpcs-20230331xex31d1.htm</File>
    <File>tpcs-20230331xex31d2.htm</File>
    <File>tpcs-20230331xex32d1.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="691">http://fasb.org/us-gaap/2022</BaseTaxonomy>
    <BaseTaxonomy items="36">http://xbrl.sec.gov/dei/2022</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
