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Revenue Recognition (Tables) | 6 Months Ended
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Jun. 30, 2018
Revenue from Contract with Customer [Abstract] |
Non Interest Income [Table Text Block] | The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three and six month periods ending June 30, 2018 and 2017 (in thousands).
|  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Noninterest income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
In-scope of Topic 606 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Wealth management fees |  | $ | 2,447 |  |  | $ | 2,240 |  |  | $ | 4,873 |  |  | $ | 4,550 |
Service charges on deposit accounts |  |  | 357 |  |  |  | 385 |  |  |  | 740 |  |  |  | 759 |
Other |  |  | 435 |  |  |  | 431 |  |  |  | 852 |  |  |  | 826 |
Noninterest income (in-scope of topic 606) |  |  | 3,239 |  |  |  | 3,056 |  |  |  | 6,465 |  |  |  | 6,135 |
Noninterest income (out-of-scope of topic 606) |  |  | 442 |  |  |  | 699 |  |  |  | 851 |  |  |  | 1,182 |
Total noninterest income |  | $ | 3,681 |  |  | $ | 3,755 |  |  | $ | 7,316 |  |  | $ | 7,317 |

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- Definition The tabular disclosure of information regarding non interest income. + References No definition available. + Details
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Namespace Prefix: | asrv_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration