Comprehensive Income/Loss (Comprised of the following Components) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ (2,132)	$ (7,434)
Net change in other comprehensive income (loss)	$ (1,723)	$ 3,361	(4)	5,741
Ending Balance	(2,136)	(1,693)	(2,136)	(1,693)
Unrealized Gain on Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			3,389	(2,023)
Net change in other comprehensive income (loss)			(667)	4,312
Ending Balance	2,722	2,289	2,722	2,289
Unrealized Loss on Cash Flow Hedge
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(3,298)	(5,698)
Net change in other comprehensive income (loss)			536	1,579
Ending Balance	(2,762)	(4,119)	(2,762)	(4,119)
Deferred Gain on Hedge Transactions
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			571	715
Net change in other comprehensive income (loss)			(72)	(72)
Ending Balance	499	643	499	643
Defined Benefit Postretirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(2,794)	(428)
Net change in other comprehensive income (loss)			199	(78)
Ending Balance	$ (2,595)	$ (506)	$ (2,595)	$ (506)