Comprehensive Income/Loss (Comprehensive Income/(Loss) Presented Net of Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2009
Equity [Abstract]
Deferred Gain Loss On Cash Flow Hedge	$ 245		$ 281	$ 1,400
COMPREHENSIVE INCOME
Change in fair value of securities available for sale, pre tax amount	896	$ 6,708
Change in fair value of securities available for sale, tax (expense) benefit	(364)	(2,610)
Change in fair value of securities available for sale, after tax amount	532	4,098
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale and Write-down of Securities, before Tax	1	29
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale and Write-down of Securities, Tax	0	12
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale and Write-down of Securities, Net of Tax	1	17
Change in fair value of securities available for sale, pre tax amount	895	6,679
Change in fair value of securities available for sale, tax (expense) benefit	(364)	(2,598)
Change in fair value of securities available for sale, after tax amount	531	4,081
Change in fair value of cash flow hedges, pre tax amount	58	(456)
Change in fair value of cash flow hedges, tax (expense) benefit	(24)	188
Change in fair value of cash flow hedges, after tax amount	34	(268)
Less: net cash flow hedge losses reclassified into interest on borrowings expense, pre tax amount	93	661
Less: net cash flow hedge losses reclassified into earnings, tax (expense) benefit	38	270
Less: net cash flow hedge losses reclassified into interest on borrowings expense, after tax	(55)	(391)
Net change in fair value of cash flow hedges, pre tax amount	151	205
Net change in fair value of cash flow hedges, tax (expense) benefit	(62)	(82)
Net change in fair value of cash flow hedges	89	123
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	(7)	(28)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	3	11
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	(4)	(17)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax	70	61
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Tax	(29)	(25)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	41	36
Amortization of certain costs included in net periodic retirement costs, pre tax amount	69	69
Amortization of certain costs included in net periodic retirement costs, tax (expense) benefit	(28)	(28)
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax	41	41
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	132	102
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	(54)	(42)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	78	60
Total other comprehensive income, pre tax amount	1,178	6,986
Total other comprehensive income, tax (expense) benefit	(480)	(2,722)
Total other comprehensive income, after tax amount	$ 698	$ 4,264