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Subsequent Events (Details) - Equity Securities - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2017 | Apr. 07, 2017 | Mar. 31, 2017
Allegheny Valley Bancorp |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Investment owned, balance (in shares) |  |  |  | 145,855
Scenario, Forecast | Standard ABV Financial Corp. |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Equity securities classified as available-for-sale, gain recognized | $ 2.7 | $ 2.7 |  |
Subsequent Event | Standard ABV Financial Corp. |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Investment owned, balance (in shares) |  |  | 303,815.965 |

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