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