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Line of Credit - Additional Information (Detail) (USD $)
 3 Months Ended
May 02, 2015
Line of Credit Facility [Line Items]  
Revolving line of credit $ 10,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Agreement term 3 years
Line of credit, interest rate description Any borrowings made under this line of credit bear interest at either a fluctuating base rate equal to the highest of (i) the Prime Rate, (ii) 1.50% above the daily one month LIBOR, and (iii) the Federal Funds Rate in effect plus 1.50% or at a fixed rate of LIBOR plus an agreed upon margin of between 0% and 2.25%, based on the Company's funded debt to EBITDA ratio as defined in the agreement.
Borrowings against new line of credit $ 0us-gaap_LineOfCreditFacilityAverageOutstandingAmount
Fixed Charge Coverage Ratio 3alot_FixedChargeCoverageRatio
Funded debt to adjusted EBITDA ratio 1.25alot_FundedDebtToAdjustedEbitdaRatio
London Interbank Offered Rate (LIBOR) [Member]  
Line of Credit Facility [Line Items]  
Percentage above rate 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]  
Line of Credit Facility [Line Items]  
Percentage above rate 0.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]  
Line of Credit Facility [Line Items]  
Percentage above rate 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
Federal Funds Effective Swap Rate [Member]  
Line of Credit Facility [Line Items]  
Percentage above rate 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_VariableRateAxis
= us-gaap_FederalFundsEffectiveSwapRateMember