FHLBP Advances and Short-Term Borrowed Funds (Aggregate short-term borrowings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Repurchase Agreements [Member]
Short-term Debt [Line Items]
Amount outstanding at end of year		$ 12,023
Weighted average interest rate at end of year		0.20%
Maximum amount outstanding at any month-end	$ 14,160	$ 17,028
Daily average amount outstanding	$ 7,516	$ 14,229
Weighted average interest rate for the year	0.20%	0.20%
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Amount outstanding at end of year		$ 2,372
Weighted average interest rate at end of year		1.75%
Maximum amount outstanding at any month-end	$ 5,233	$ 2,372
Daily average amount outstanding	$ 1,106	$ 143
Weighted average interest rate for the year	1.92%	1.22%