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Assets and liabilities measured at fair value on a recurring basis (Details) (USD $)
In Thousands, unless otherwise specified
Feb. 28, 2015
Holdback Payment and Earn-Out Payments $ 645fil_HoldbackPaymentAndEarnOutPayments
Total assets at fair value 645us-gaap_FairValueNetAssetLiability
Quoted prices in active markets (Level 1)  
Holdback Payment and Earn-Out Payments 0fil_HoldbackPaymentAndEarnOutPayments
/ us-gaap_StatementEquityComponentsAxis
= fil_QuotedPricesInActiveMarketsLevel1Member
Total assets at fair value 0us-gaap_FairValueNetAssetLiability
/ us-gaap_StatementEquityComponentsAxis
= fil_QuotedPricesInActiveMarketsLevel1Member
Significant other observable inputs (Level 2)  
Holdback Payment and Earn-Out Payments 0fil_HoldbackPaymentAndEarnOutPayments
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_FairValueInputsLevel2Member
Total assets at fair value 0us-gaap_FairValueNetAssetLiability
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_FairValueInputsLevel2Member
Significant unobservable inputs (Level 3)  
Holdback Payment and Earn-Out Payments 645fil_HoldbackPaymentAndEarnOutPayments
/ us-gaap_StatementEquityComponentsAxis
= fil_SignificantUnobservableInputsLevel3Member
Total assets at fair value $ 645us-gaap_FairValueNetAssetLiability
/ us-gaap_StatementEquityComponentsAxis
= fil_SignificantUnobservableInputsLevel3Member