Annual report pursuant to Section 13 and 15(d)

Stock-based compensation (Details)

v2.4.1.9
Stock-based compensation (Details) (USD $)
0 Months Ended 12 Months Ended
Oct. 16, 2014
Oct. 02, 2014
Feb. 01, 2014
Nov. 30, 2014
Oct. 16, 2014
Oct. 02, 2014
Feb. 01, 2014
Nov. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Shares issued 10,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber   100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 137,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 10,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber   100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Weighted average exercise price (usd per share) $ 3.36us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice $ 44,510us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice $ 3.40us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice $ 3.40us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice        
Share Price (usd per share) $ 3.36us-gaap_SharePrice $ 3.42us-gaap_SharePrice $ 3.04us-gaap_SharePrice   $ 3.36us-gaap_SharePrice $ 3.42us-gaap_SharePrice $ 3.04us-gaap_SharePrice  
Award vesting percent 20.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage     20.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage        
Share based compensation of shares issued $ 16,479us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross     $ 114,000us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross        
Award vesting period       5 years        
Share-based compensation 549us-gaap_AllocatedShareBasedCompensationExpense 1,486us-gaap_AllocatedShareBasedCompensationExpense   27,000us-gaap_AllocatedShareBasedCompensationExpense        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]                
Risk-free interest rate 1.70%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate 1.70%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate 1.49%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate          
Dividend yield $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments          
Stock volatility 37.51%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate 36.63%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate 32.16%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate          
Option Term (years) 10 years 10 years 5 years          
Stanley Kreitman and Robert Lage                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Shares issued   10,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_TitleOfIndividualAxis
= caw_StanleyKreitmanMember
      10,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_TitleOfIndividualAxis
= caw_StanleyKreitmanMember
   
Share Price (usd per share)   $ 3.42us-gaap_SharePrice
/ us-gaap_TitleOfIndividualAxis
= caw_StanleyKreitmanMember
      $ 3.42us-gaap_SharePrice
/ us-gaap_TitleOfIndividualAxis
= caw_StanleyKreitmanMember
   
Josephine Belli                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Shares issued   7,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_TitleOfIndividualAxis
= caw_JosephineBelliMember
      7,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_TitleOfIndividualAxis
= caw_JosephineBelliMember
   
Share Price (usd per share)   $ 3.42us-gaap_SharePrice
/ us-gaap_TitleOfIndividualAxis
= caw_JosephineBelliMember
      $ 3.42us-gaap_SharePrice
/ us-gaap_TitleOfIndividualAxis
= caw_JosephineBelliMember
   
Stanley Kreitman, Robert Lage and Josephine Belli                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Award vesting period       1 year