XML 109 R21.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Loan and Allowance for Loan Loss (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2013
Loans And Leases Receivable Disclosure |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  |  |  |  |  |  | June 30, |  |  | December 31,
(In thousands) |  |  | 2013 |  |  | 2012
Commercial and industrial |  | $ | 56,030 |  | $ | 59,334
Construction and land development |  |  | 45,886 |  |  | 37,631
Commercial real estate: |  |  |  |  |  |
| Owner occupied |  |  | 60,140 |  |  | 64,368
| Other |  |  | 117,151 |  |  | 119,243
|  | Total commercial real estate |  |  | 177,291 |  |  | 183,611
Residential real estate: |  |  |  |  |  |
| Consumer mortgage |  |  | 55,192 |  |  | 58,087
| Investment property |  |  | 43,829 |  |  | 47,544
|  | Total residential real estate |  |  | 99,021 |  |  | 105,631
Consumer installment |  |  | 12,747 |  |  | 12,219
|  | Total loans |  |  | 390,975 |  |  | 398,426
Less: unearned income |  |  | (249) |  |  | (233)
|  | Loans, net of unearned income |  | $ | 390,726 |  | $ | 398,193
Past Due Financing Receivables [Table Text Block] |
|  |  |  |  |  |  |  |  | Accruing | Accruing | Total |  |  |  |
|  |  |  |  |  |  |  |  | 30-89 Days | Greater than | Accruing | Non- |  |  | Total
(In thousands) |  | Current | Past Due | 90 days | Loans | Accrual |  |  | Loans
June 30, 2013: |  |  |  |  |  |  |  |  |  |
Commercial and industrial |  | $ | 55,644 | 329 | — | 55,973 | 57 |  | $ | 56,030
Construction and land development |  |  | 44,285 | — | — | 44,285 | 1,601 |  |  | 45,886
Commercial real estate: |  |  |  |  |  |  |  |  |  |
| Owner occupied |  |  | 59,035 | 50 | — | 59,085 | 1,055 |  |  | 60,140
| Other |  |  | 115,274 | 1,448 | — | 116,722 | 429 |  |  | 117,151
|  | Total commercial real estate |  |  | 174,309 | 1,498 | — | 175,807 | 1,484 |  |  | 177,291
Residential real estate: |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  |  | 53,742 | 325 | — | 54,067 | 1,125 |  |  | 55,192
| Investment property |  |  | 43,258 | 176 | — | 43,434 | 395 |  |  | 43,829
|  | Total residential real estate |  |  | 97,000 | 501 | — | 97,501 | 1,520 |  |  | 99,021
Consumer installment |  |  | 12,598 | 147 | — | 12,745 | 2 |  |  | 12,747
|  | Total |  | $ | 383,836 | 2,475 | — | 386,311 | 4,664 |  | $ | 390,975
December 31, 2012: |  |  |  |  |  |  |  |  |  |
Commercial and industrial |  | $ | 59,101 | 173 | — | 59,274 | 60 |  | $ | 59,334
Construction and land development |  |  | 35,917 | 8 | — | 35,925 | 1,706 |  |  | 37,631
Commercial real estate: |  |  |  |  |  |  |  |  |  |
| Owner occupied |  |  | 63,323 | — | — | 63,323 | 1,045 |  |  | 64,368
| Other |  |  | 113,344 | 230 | — | 113,574 | 5,669 |  |  | 119,243
|  | Total commercial real estate |  |  | 176,667 | 230 | — | 176,897 | 6,714 |  |  | 183,611
Residential real estate: |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  |  | 55,521 | 1,202 | 58 | 56,781 | 1,306 |  |  | 58,087
| Investment property |  |  | 46,460 | 335 | — | 46,795 | 749 |  |  | 47,544
|  | Total residential real estate |  |  | 101,981 | 1,537 | 58 | 103,576 | 2,055 |  |  | 105,631
Consumer installment |  |  | 12,157 | 62 | — | 12,219 | — |  |  | 12,219
|  | Total |  | $ | 385,823 | 2,010 | 58 | 387,891 | 10,535 |  | $ | 398,426
Allowance for Credit Losses on Financing Receivables [Table Text Block] |
|  |  | June 30, 2013
(In thousands) | Commercial and industrial |  | Construction and land development |  | Commercial real estate |  | Residential real estate |  | Consumer installment |  |  |  | Total
Quarter ended: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 569 |  | 1,619 |  | 3,571 |  | 885 |  | 125 |  |  | $ | 6,769
Charge-offs |  | — |  | — |  | (118) |  | (189) |  | (45) |  |  |  | (352)
Recoveries |  | 5 |  | 2 |  | — |  | 28 |  | 5 |  |  |  | 40
| Net (charge-offs) recoveries |  | 5 |  | 2 |  | (118) |  | (161) |  | (40) |  |  |  | (312)
Provision |  | 101 |  | (167) |  | (342) |  | 401 |  | 7 |  |  |  | —
Ending balance | $ | 675 |  | 1,454 |  | 3,111 |  | 1,125 |  | 92 |  |  | $ | 6,457
Six months ended: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 812 |  | 1,545 |  | 3,137 |  | 1,126 |  | 103 |  |  | $ | 6,723
Charge-offs |  | (68) |  | (39) |  | (118) |  | (455) |  | (62) |  |  |  | (742)
Recoveries |  | 17 |  | 3 |  | 4 |  | 41 |  | 11 |  |  |  | 76
| Net charge-offs |  | (51) |  | (36) |  | (114) |  | (414) |  | (51) |  |  |  | (666)
Provision |  | (86) |  | (55) |  | 88 |  | 413 |  | 40 |  |  |  | 400
Ending balance | $ | 675 |  | 1,454 |  | 3,111 |  | 1,125 |  | 92 |  |  | $ | 6,457
|  |  | June 30, 2012
(In thousands) | Commercial and industrial |  | Construction and land development |  | Commercial real estate |  | Residential real estate |  | Consumer installment |  |  |  | Total
Quarter ended: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 845 |  | 1,439 |  | 3,816 |  | 1,332 |  | 64 |  |  |  | 7,496
Charge-offs |  | (95) |  | (231) |  | (1,218) |  | (78) |  | (26) |  |  | $ | (1,648)
Recoveries |  | 5 |  | 1 |  | — |  | 45 |  | 4 |  |  | $ | 55
| Net charge-offs |  | (90) |  | (230) |  | (1,218) |  | (33) |  | (22) |  |  |  | (1,593)
Provision |  | (24) |  | 414 |  | 219 |  | (21) |  | 12 |  |  | $ | 600
Ending balance | $ | 731 |  | 1,623 |  | 2,817 |  | 1,278 |  | 54 |  |  | $ | 6,503
Six months ended: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance | $ | 948 |  | 1,470 |  | 3,009 |  | 1,363 |  | 129 |  |  | $ | 6,919
Charge-offs |  | (95) |  | (231) |  | (1,218) |  | (111) |  | (32) |  |  |  | (1,687)
Recoveries |  | 8 |  | 1 |  | — |  | 51 |  | 11 |  |  |  | 71
| Net charge-offs |  | (87) |  | (230) |  | (1,218) |  | (60) |  | (21) |  |  |  | (1,616)
Provision |  | (130) |  | 383 |  | 1,026 |  | (25) |  | (54) |  |  |  | 1,200
Ending balance | $ | 731 |  | 1,623 |  | 2,817 |  | 1,278 |  | 54 |  |  | $ | 6,503
FinancingReceivableAllowanceforCreditLossAdditionalInformationTableTextBlock |
|  |  |  |  |  |  | Collectively evaluated (1) |  | Individually evaluated (2) |  | Total
|  |  |  |  |  |  | Allowance | Recorded |  | Allowance | Recorded |  | Allowance | Recorded
|  |  |  |  |  |  | for loan | investment |  | for loan | investment |  | for loan | investment
(In thousands) |  | losses | in loans |  | losses | in loans |  | losses | in loans
June 30, 2013: |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 675 | 55,882 |  | — | 148 |  | 675 | 56,030
Construction and land development |  | 1,347 | 44,285 |  | 107 | 1,601 |  | 1,454 | 45,886
Commercial real estate |  | 2,991 | 174,922 |  | 120 | 2,369 |  | 3,111 | 177,291
Residential real estate |  | 1,069 | 97,732 |  | 56 | 1,289 |  | 1,125 | 99,021
Consumer installment |  | 92 | 12,747 |  | — | — |  | 92 | 12,747
|  | Total | $ | 6,174 | 385,568 |  | 283 | 5,407 |  | 6,457 | 390,975
June 30, 2012: |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 731 | 59,223 |  | — | 195 |  | 731 | 59,418
Construction and land development |  | 1,257 | 35,110 |  | 366 | 3,858 |  | 1,623 | 38,968
Commercial real estate |  | 2,666 | 182,817 |  | 151 | 3,029 |  | 2,817 | 185,846
Residential real estate |  | 953 | 102,678 |  | 325 | 1,549 |  | 1,278 | 104,227
Consumer installment |  | 54 | 11,133 |  | — | — |  | 54 | 11,133
|  | Total | $ | 5,661 | 390,961 |  | 842 | 8,631 |  | 6,503 | 399,592
(1) | Represents loans collectively evaluated for impairment in accordance with ASC 450-20, Loss Contingencies (formerly FAS 5), and
| pursuant to amendments by ASU 2010-20 regarding allowance for unimpaired loans.
(2) | Represents loans individually evaluated for impairment in accordance with ASC 310-30, Receivables (formerly FAS 114), and
| pursuant to amendments by ASU 2010-20 regarding allowance for impaired loans.
Financing Receivable Credit Quality Indicators [Table Text Block] |
(In thousands) |  | Pass |  | Special Mention |  | Substandard Accruing |  | Nonaccrual |  |  | Total loans
June 30, 2013: |  |  |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 55,087 |  | 2 |  | 884 |  | 57 |  | $ | 56,030
Construction and land development |  | 42,710 |  | 374 |  | 1,201 |  | 1,601 |  |  | 45,886
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |
| Owner occupied |  | 56,834 |  | 760 |  | 1,491 |  | 1,055 |  |  | 60,140
| Other |  | 113,552 |  | 2,828 |  | 342 |  | 429 |  |  | 117,151
|  | Total commercial real estate |  | 170,386 |  | 3,588 |  | 1,833 |  | 1,484 |  |  | 177,291
Residential real estate: |  |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  | 47,619 |  | 793 |  | 5,655 |  | 1,125 |  |  | 55,192
| Investment property |  | 40,384 |  | 933 |  | 2,117 |  | 395 |  |  | 43,829
|  | Total residential real estate |  | 88,003 |  | 1,726 |  | 7,772 |  | 1,520 |  |  | 99,021
Consumer installment |  | 12,579 |  | 20 |  | 146 |  | 2 |  |  | 12,747
|  | Total | $ | 368,765 |  | 5,710 |  | 11,836 |  | 4,664 |  | $ | 390,975
December 31, 2012: |  |  |  |  |  |  |  |  |  |  |
Commercial and industrial | $ | 58,487 |  | 224 |  | 563 |  | 60 |  | $ | 59,334
Construction and land development |  | 34,490 |  | 310 |  | 1,125 |  | 1,706 |  |  | 37,631
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |
| Owner occupied |  | 59,270 |  | 2,528 |  | 1,525 |  | 1,045 |  |  | 64,368
| Other |  | 111,719 |  | 653 |  | 1,202 |  | 5,669 |  |  | 119,243
|  | Total commercial real estate |  | 170,989 |  | 3,181 |  | 2,727 |  | 6,714 |  |  | 183,611
Residential real estate: |  |  |  |  |  |  |  |  |  |  |
| Consumer mortgage |  | 49,462 |  | 1,544 |  | 5,775 |  | 1,306 |  |  | 58,087
| Investment property |  | 43,559 |  | 1,033 |  | 2,203 |  | 749 |  |  | 47,544
|  | Total residential real estate |  | 93,021 |  | 2,577 |  | 7,978 |  | 2,055 |  |  | 105,631
Consumer installment |  | 11,850 |  | 155 |  | 214 |  | — |  |  | 12,219
|  | Total | $ | 368,837 |  | 6,447 |  | 12,607 |  | 10,535 |  | $ | 398,426
Impaired Financing Receivables [Table Text Block] |
|  |  |  |  |  |  | June 30, 2013
(In thousands) |  | Unpaid principal balance (1) | Charge-offs and payments applied (2) | Recorded investment (3) |  |  | Related allowance
With no allowance recorded:
Commercial and industrial | $ | 148 | — | 148 |  |  |
Construction and land development |  | 2,878 | (1,681) | 1,197 |  |  |
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 350 | (51) | 299 |  |  |
| Other |  | 515 | (86) | 429 |  |  |
|  | Total commercial real estate |  | 865 | (137) | 728 |  |  |
Residential real estate: |  |  |  |  |  |  |
| Consumer mortgages |  | 960 | (177) | 783 |  |  |
| Investment property |  | 210 | (29) | 181 |  |  |
|  | Total residential real estate |  | 1,170 | (206) | 964 |  |  |
|  | Total | $ | 5,061 | (2,024) | 3,037 |
With allowance recorded: |
Construction and land development | $ | 461 | (57) | 404 |  | $ | 107
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 1,759 | (118) | 1,641 |  |  | 120
|  | Total commercial real estate |  | 1,759 | (118) | 1,641 |  |  | 120
Residential real estate: |  |  |  |  |  |  |
| Investment property |  | 412 | (87) | 325 |  |  | 56
|  | Total residential real estate |  | 412 | (87) | 325 |  |  | 56
|  | Total | $ | 2,632 | (262) | 2,370 |  | $ | 283
|  | Total impaired loans | $ | 7,693 | (2,286) | 5,407 |  | $ | 283
(1) Unpaid principal balance represents the contractual obligation due from the customer.
(2) Charge-offs and payments applied represents cumulative charge-offs taken, as well as interest payments that have been
| applied against the outstanding principal balance subsequent to the loans being placed on nonaccrual status.
(3) Recorded investment represents the unpaid principal balance less charge-offs and payments applied; it is shown before
| any related allowance for loan losses.
|  |  |  |  |  |  | December 31, 2012
(In thousands) |  | Unpaid principal balance (1) | Charge-offs and payments applied (2) | Recorded investment (3) |  |  | Related allowance
With no allowance recorded:
Commercial and industrial | $ | 169 | — | 169 |  |  |
Construction and land development |  | 2,879 | (1,682) | 1,197 |  |  |
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 787 | (212) | 575 |  |  |
| Other |  | 7,914 | (1,862) | 6,052 |  |  |
|  | Total commercial real estate |  | 8,701 | (2,074) | 6,627 |  |  |
Residential real estate: |  |  |  |  |  |  |
| Consumer mortgages |  | 971 | (152) | 819 |  |  |
| Investment property |  | 508 | (110) | 398 |  |  |
|  | Total residential real estate |  | 1,479 | (262) | 1,217 |  |  |
|  | Total | $ | 13,228 | (4,018) | 9,210 |
With allowance recorded: |
Construction and land development | $ | 471 | (45) | 426 |  | $ | 129
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 899 | — | 899 |  |  | 134
|  | Total commercial real estate |  | 899 | — | 899 |  |  | 134
|  | Total | $ | 1,370 | (45) | 1,325 |  | $ | 263
|  | Total impaired loans | $ | 14,598 | (4,063) | 10,535 |  | $ | 263
(1) Unpaid principal balance represents the contractual obligation due from the customer.
(2) Charge-offs and payments applied represents cumulative charge-offs taken, as well as interest payments that have been
| applied against the outstanding principal balance subsequent to the loans being placed on nonaccrual status.
(3) Recorded investment represents the unpaid principal balance less charge-offs and payments applied; it is shown before
| any related allowance for loan losses.
ScheduleOfAverageImpairedFinancingReceivableTableTextBlock |
|  |  |  |  |  |  | Quarter ended June 30, 2013 |  | Six months ened June 30, 2013
|  |  |  |  |  |  | Average |  | Total interest |  | Average |  | Total interest
|  |  |  |  |  |  | recorded |  | income |  | recorded |  | income
(In thousands) |  | investment |  | recognized |  | investment |  | recognized
Impaired loans:
Commercial and industrial | $ | 150 |  | 2 |  | 158 |  | 5
Construction and land development |  | 1,607 |  | — |  | 1,614 |  | —
Commercial real estate: |  |  |  |  |  |  |  |
| Owner occupied |  | 1,984 |  | 14 |  | 2,019 |  | 29
| Other |  | 430 |  | — |  | 1,902 |  | —
|  | Total commercial real estate |  | 2,414 |  | 14 |  | 3,921 |  | 29
Residential real estate: |  |  |  |  |  |  |  |
| Consumer mortgages |  | 789 |  | — |  | 801 |  | —
| Investment property |  | 348 |  | — |  | 323 |  | —
|  | Total residential real estate |  | 1,137 |  | — |  | 1,124 |  | —
|  | Total | $ | 5,308 |  | 16 |  | 6,817 |  | 34
|  |  |  |  |  |  | Quarter ended June 30, 2012 |  | Six months ended June 30, 2012
|  |  |  |  |  |  | Average |  | Total interest |  | Average |  | Total interest
|  |  |  |  |  |  | recorded |  | income |  | recorded |  | income
(In thousands) |  | investment |  | recognized |  | investment |  | recognized
Impaired loans:
Commercial and industrial | $ | 197 |  | 4 |  | 205 |  | 8
Construction and land development |  | 4,185 |  | — |  | 4,595 |  | —
Commercial real estate: |  |  |  |  |  |  |  |
| Owner occupied |  | 2,561 |  | 18 |  | 2,566 |  | 35
| Other |  | 1,245 |  | — |  | 1,500 |  | —
|  | Total commercial real estate |  | 3,806 |  | 18 |  | 4,066 |  | 35
Residential real estate: |  |  |  |  |  |  |  |
| Consumer mortgages |  | 863 |  | — |  | 881 |  | —
| Investment property |  | 695 |  | — |  | 562 |  | —
|  | Total residential real estate |  | 1,558 |  | — |  | 1,443 |  | —
|  | Total | $ | 9,746 |  | 22 |  | 10,309 |  | 43
Troubled Debt Restructurings on Financing Receivables [Table Text Block] |
|  |  |  |  |  |  | TDRs
|  |  |  |  |  |  |  |  |  |  |  | Related
(In thousands) |  | Accruing | Nonaccrual | Total |  |  | Allowance
June 30, 2013 |  |  |  |  |  |  |
Commercial and industrial | $ | 148 | — | 148 |  | $ | —
Construction and land development |  | — | 1,601 | 1,601 |  |  | 107
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 885 | 299 | 1,184 |  |  | 120
| Other |  | — | 429 | 429 |  |  | —
|  | Total commercial real estate |  | 885 | 728 | 1,613 |  |  | 120
Residential real estate: |  |  |  |  |  |  |
| Consumer mortgages |  | — | 783 | 783 |  |  | —
| Investment property |  | — | 225 | 225 |  |  | —
|  | Total residential real estate |  | — | 1,008 | 1,008 |  |  | —
|  | Total | $ | 1,033 | 3,337 | 4,370 |  | $ | 227
December 31, 2012 |  |
Commercial and industrial | $ | 169 | — | 169 |  | $ | —
Construction and land development |  | — | 1,623 | 1,623 |  |  | 129
Commercial real estate: |  |  |  |  |  |  |
| Owner occupied |  | 899 | 1,045 | 1,944 |  |  | 134
| Other |  | — | 432 | 432 |  |  | —
|  | Total commercial real estate |  | 899 | 1,477 | 2,376 |  |  | 134
Residential real estate: |  |  |  |  |  |  |
| Consumer mortgages |  | — | 819 | 819 |  |  | —
| Investment property |  | — | 188 | 188 |  |  | —
|  | Total residential real estate |  | — | 1,007 | 1,007 |  |  | —
|  | Total | $ | 1,068 | 4,107 | 5,175 |  | $ | 263
|  |  |  |  |  | Quarter ended June 30, |  |  | Six Months ended June 30,
|  |  |  |  |  |  |  |  | Pre- |  | Post - |  |  |  |  |  | Pre- |  | Post -
|  |  |  |  |  |  |  |  | modification |  | modification |  |  |  |  |  | modification |  | modification
|  |  |  |  |  | Number |  |  | outstanding |  | outstanding |  |  | Number |  |  | outstanding |  | outstanding
|  |  |  |  |  | of |  |  | recorded |  | recorded |  |  | of |  |  | recorded |  | recorded
(Dollars in thousands) | contracts |  |  | investment |  | investment |  |  | contracts |  |  | investment |  | investment
2013: |  |  |  |  |  |  |  |  |  |  |  |  |
| Other | — |  | $ | — |  | — |  |  | 1 |  | $ | 431 |  | 431
|  | Total commercial real estate | — |  |  | — |  | — |  |  | 1 |  |  | 431 |  | 431
| Consumer mortgages | — |  |  | — |  | — |  |  | 1 |  |  | 131 |  | 131
|  | Total residential real estate | — |  |  | — |  | — |  |  | 1 |  |  | 131 |  | 131
|  | Total | — |  | $ | — |  | — |  |  | 2 |  | $ | 562 |  | 562
2012: |  |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development | — |  | $ | — |  | — |  |  | 2 |  | $ | 2,842 |  | 1,753
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Owner occupied | 3 |  |  | 2,349 |  | 1,406 |  |  | 4 |  |  | 3,167 |  | 2,225
| Other | — |  |  | — |  | — |  |  | 2 |  |  | 1,804 |  | 1,657
|  | Total commercial real estate | 3 |  |  | 2,349 |  | 1,406 |  |  | 6 |  |  | 4,971 |  | 3,882
Residential real estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Consumer mortgages | 2 |  |  | 863 |  | 857 |  |  | 2 |  |  | 863 |  | 857
|  | Total residential real estate | 2 |  |  | 863 |  | 857 |  |  | 2 |  |  | 863 |  | 857
|  | Total | 5 |  | $ | 3,212 |  | 2,263 |  |  | 10 |  | $ | 8,676 |  | 6,492
|  |  |  |  |  | Quarter ended June 30, |  |  | Six months ended June 30,
|  |  |  |  |  | Number of |  |  | Recorded |  |  |  | Number of |  |  | Recorded |
(Dollars in thousands) | Contracts |  |  | investment(1) |  |  |  | Contracts |  |  | investment(1) |
2013: |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development | — |  | $ | — |  |  |  | 1 |  | $ | 1,197 |
|  | Total | — |  | $ | — |  |  |  | 1 |  | $ | 1,197 |
2012: |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development | — |  | $ | — |  |  |  | 1 |  | $ | 2,386 |
|  | Total | — |  | $ | — |  |  |  | 1 |  | $ | 2,386 |
(1) Amount as of applicable month end during the respective period for which there was a payment default. |

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | aubn_Financingreceivableallowanceforcreditlossadditionalinformationtabletextblock
Namespace Prefix: | aubn_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | aubn_ScheduleOfAccountsNotesLoansAndFinancingReceivableTableTextBlock
Namespace Prefix: | aubn_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | aubn_Scheduleofaverageimpairedfinancingreceivabletabletextblock
Namespace Prefix: | aubn_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
Name: | us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953659-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 55 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7880640&loc=SL6953803-111525 + Details
Name: | us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of impaired financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LoansAndLeasesReceivableDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of financing receivables that are past due but not impaired, financing receivables that are 90 days past due and still accruing, and financing receivables on nonaccrual status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
Name: | us-gaap_PastDueFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of financing receivables and troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953682-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953676-111524 + Details
Name: | us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration