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Summary of Significant Accounting Policies and Significant Judgments and Estimates - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended
Mar. 28, 2015
CreditFacility
Dec. 27, 2014
Mar. 28, 2015
CreditFacility
Mar. 29, 2014
Sep. 27, 2014
Basis Of Presentation And Significant Accounting Policies [Line Items]          
Expected period of revenue recognized pursuant to proportional performance     1 year    
Number of secured letter of credit facilities 4tcco_NumberOfCreditFacilities   4tcco_NumberOfCreditFacilities    
Allowance for accounts receivable $ 25,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent   $ 25,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent   $ 25,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Valuation allowance for deferred tax assets         2,400,000us-gaap_DeferredTaxAssetsValuationAllowance
Unrecognized tax benefits 81,602us-gaap_UnrecognizedTaxBenefits   81,602us-gaap_UnrecognizedTaxBenefits   81,218us-gaap_UnrecognizedTaxBenefits
Fair value measurements, transfers between levels 0us-gaap_FairValueAssetsLevel1ToLevel2TransfersAmount   0us-gaap_FairValueAssetsLevel1ToLevel2TransfersAmount   0us-gaap_FairValueAssetsLevel1ToLevel2TransfersAmount
Fair value measurements, transfers between levels 0us-gaap_FairValueAssetsLevel2ToLevel1TransfersAmount   0us-gaap_FairValueAssetsLevel2ToLevel1TransfersAmount   0us-gaap_FairValueAssetsLevel2ToLevel1TransfersAmount
Assets measured on a nonrecurring basis 0us-gaap_AssetsFairValueDisclosureNonrecurring   0us-gaap_AssetsFairValueDisclosureNonrecurring   0us-gaap_AssetsFairValueDisclosureNonrecurring
Liabilities measured on a nonrecurring basis 0us-gaap_LiabilitiesFairValueDisclosureNonrecurring   0us-gaap_LiabilitiesFairValueDisclosureNonrecurring   0us-gaap_LiabilitiesFairValueDisclosureNonrecurring
Excess tax benefits 0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities     0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities  
Number of Shares, Granted 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 14,200us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross  
Weighted average fair value, Granted       $ 4.53us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue  
Unrecognized compensation expense related to options outstanding 66,338us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions   66,338us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions   141,213us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Weighted average period of compensation expense     1 year 1 month 6 days    
Shares authorized for issuance 750,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized   750,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized    
Shares outstanding 268,612us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber 269,485us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber 268,612us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber   269,485us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
Fair market value term period     10 years    
Intrinsic value of outstanding and exercisable options 24,157tcco_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableAndOutstandingIntrinsicValue   24,157tcco_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableAndOutstandingIntrinsicValue   29,987tcco_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableAndOutstandingIntrinsicValue
Letter of Credit [Member]          
Basis Of Presentation And Significant Accounting Policies [Line Items]          
Outstanding letter of credit amount $ 363,414us-gaap_DebtInstrumentCollateralAmount
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_LetterOfCreditMember
  $ 363,414us-gaap_DebtInstrumentCollateralAmount
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_LetterOfCreditMember
   
2001 Stock Option Plan [Member]          
Basis Of Presentation And Significant Accounting Policies [Line Items]          
Share available for grants 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= tcco_TwoThousandOneStockOptionPlanMember
  0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= tcco_TwoThousandOneStockOptionPlanMember
   
2005 Non-Statutory Stock Option Plan [Member]          
Basis Of Presentation And Significant Accounting Policies [Line Items]          
Share available for grants 19,723us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= tcco_TwoThousandFiveNonStatutoryStockOptionPlanMember
  19,723us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= tcco_TwoThousandFiveNonStatutoryStockOptionPlanMember
   
2010 Equity Plan [Member]          
Basis Of Presentation And Significant Accounting Policies [Line Items]          
Share available for grants 56,476us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= tcco_TwoThousandTenStockOptionPlanMember
  56,476us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= tcco_TwoThousandTenStockOptionPlanMember
   
Minimum [Member]          
Basis Of Presentation And Significant Accounting Policies [Line Items]          
Vesting periods     0 years    
Maximum [Member]          
Basis Of Presentation And Significant Accounting Policies [Line Items]          
Vesting periods     5 years