Employee Benefit Plans (Components of the Net Periodic Pension Plan Cost) (SERP) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Service cost			$ 242	$ 193
Interest cost			1,177	1,106
Amortization of prior service cost			9	9
Net pension credit included in employee benefits			(235)	(432)
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 29	$ 23	87	71
Interest cost	58	58	174	172
Amortization of recognized (gain)/ loss	13	(4)	37	(13)
Amortization of prior service cost	5	5	15	15
Net pension credit included in employee benefits	$ 105	$ 82	$ 313	$ 245