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Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 9,288	$ 7,943
Other comprehensive (loss) income, net of tax:
Securities available for sale and transferred securities	(6,270)	594
Hedging derivative instruments	(104)
Pension and post-retirement obligations	127	171
Total other comprehensive (loss) income, net of tax	(6,247)	765
Comprehensive income	$ 3,041	$ 8,708

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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