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Recently Issued Accounting Standards Lease Accounting Standards (Details) $ in Thousands | Dec. 31, 2018 USD ($)
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Lease Accounting Standards [Abstract] |
Approximate value of leases | $ 532

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- Definition Approximate value of leased assets and liabilities that will be recognized on the balance sheet as part of January 1, 2019 ASU 2016-02 adoption. + References No definition available. + Details
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Namespace Prefix: | aqb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Lease Accounting Standards [Abstract] + References No definition available. + Details
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Namespace Prefix: | aqb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration