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Note 9 - Long-term Incentive Plan (Details) - Period and Predetermined Stock Price Needed for Vesting (USD $) | 12 Months Ended
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Dec. 31, 2014
Share-based Compensation Award, Tranche One [Member] |
Note 9 - Long-term Incentive Plan (Details) - Period and Predetermined Stock Price Needed for Vesting [Line Items] |
Begins Vesting | 12 months after Grant Dates
Ends Vesting | 48 months after Grant Dates
Predetermined Vesting Price | $ 3.43 awx_PredeterminedVestingPrice / us-gaap_VestingAxis = us-gaap_ShareBasedCompensationAwardTrancheOneMember
Share-based Compensation Award, Tranche Two [Member] |
Note 9 - Long-term Incentive Plan (Details) - Period and Predetermined Stock Price Needed for Vesting [Line Items] |
Begins Vesting | 24 months after Grant Dates
Ends Vesting | 60 months after Grant Dates
Predetermined Vesting Price | $ 4.69 awx_PredeterminedVestingPrice / us-gaap_VestingAxis = us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Share-based Compensation Award, Tranche Three [Member] |
Note 9 - Long-term Incentive Plan (Details) - Period and Predetermined Stock Price Needed for Vesting [Line Items] |
Begins Vesting | 36 months after Grant Dates
Ends Vesting | 72 months after Grant Dates
Predetermined Vesting Price | $ 6.43 awx_PredeterminedVestingPrice / us-gaap_VestingAxis = us-gaap_ShareBasedCompensationAwardTrancheThreeMember
Share-based Compensation Award, Tranche Four [Member] |
Note 9 - Long-term Incentive Plan (Details) - Period and Predetermined Stock Price Needed for Vesting [Line Items] |
Begins Vesting | 48 months after Grant Dates
Ends Vesting | 84 months after Grant Dates
Predetermined Vesting Price | $ 8.81 awx_PredeterminedVestingPrice / us-gaap_VestingAxis = awx_ShareBasedCompensationAwardTrancheFourMember
Share-based Compensation Award, Tranche Five [Member] |
Note 9 - Long-term Incentive Plan (Details) - Period and Predetermined Stock Price Needed for Vesting [Line Items] |
Begins Vesting | 60 months after Grant Dates
Ends Vesting | 96 months after Grant Dates
Predetermined Vesting Price | $ 12.07 awx_PredeterminedVestingPrice / us-gaap_VestingAxis = awx_ShareBasedCompensationAwardTrancheFiveMember

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