Restatement (Detail Textuals) - USD ($) $ in Thousands		3 Months Ended		18 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Reduction in income before income taxes	[1]	$ 92	$ (41)
Reduction in income net of income taxes	[1]	$ 74	$ (5)
Cumulative effect of residential mortgage loans in Erie County restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Reduction in income before income taxes				$ (266)
Reduction in income net of income taxes				$ (178)

[1] Restated