FHLBP Advances and Short-Term Borrowed Funds (Aggregate short-term borrowings) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Repurchase Agreements [Member]
Short-term Debt [Line Items]
Amount outstanding at end of year	$ 19,221	$ 19,854
Weighted average interest rate at end of year	0.16%	0.20%
Maximum amount outstanding at any month-end	35,555	25,325
Daily average amount outstanding	19,531	20,590
Weighted average interest rate for the year	0.20%	0.22%
Other Short-Term Borrowings [Member]
Short-term Debt [Line Items]
Amount outstanding at end of year		1
Weighted average interest rate at end of year		0.35%
Maximum amount outstanding at any month-end	600	1
Daily average amount outstanding	$ 276	$ 17
Weighted average interest rate for the year	0.64%	0.47%