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Commitments And Contingencies (Schedule Of Future Lease Commitments) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Commitments And Contingencies [Abstract]  
2015 $ 366us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
2016 361us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2017 290us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2018 209us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
2019 and thereafter 1,200altv_OperatingLeasesFutureMinimumPaymentsDueInFiveYearsAndThereafter
Total $ 2,426us-gaap_OperatingLeasesFutureMinimumPaymentsDue