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Lease Commiment Textuals (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Leases [Abstract] |  |
Rent Expense | $ 200 |
Operating lease right-of-use assets | 788 | $ 785
Operating lease liabilities included in the accompanying balance sheet | 811 | $ 788
Rent Expense Excluded From Right Of Use Asset | 100 |
Rent Expense Included In Lease Liablilty | $ 112 |

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- References No definition available. + Details
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Period Type: | instant

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Namespace Prefix: | aubn_
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Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | aubn_
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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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