Accumulated Other Comprehensive Loss (Schedule of Reclassifications From Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax (expense) benefit	$ (793)	$ (677)
Net income	1,980	1,871	$ 7,281
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	(248)	(142)
Investment securities- with OTTI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income (expense) on investment securities: taxable	2	36
Tax (expense) benefit	0	(14)
Net income	2	22
Investment Securities -All Other AFS [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net gains/(losses) - other	(9)	206
Tax (expense) benefit	4	(82)
Net income	(5)	124
Investment Securities HTM [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income (expense) on investment securities: taxable	(101)	(237)
Tax (expense) benefit	40	94
Net income	(61)	(143)
Pension Plan [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax (expense) benefit	105	85
Net income	(162)	(130)
Pension Plan [Member] | Amortization of unrecognized loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	264	212
Pension Plan [Member] | Amortization of transition asset [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	0	0
Pension Plan [Member] | Amortization of prior service costs [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	(3)	(3)
SERP [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax (expense) benefit	14	9
Net income	(22)	(15)
SERP [Member] | Amortization of unrecognized loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	(37)	(19)
SERP [Member] | Amortization of prior service costs [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	$ 1	$ (5)