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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 12,025	$ 12,137	$ 25,104	$ 23,318
Other comprehensive income, net of tax:
Net change in unrealized gain on investment securities	2,795	5,866	4,919	17,719
Minimum pension liability adjustment	190	249	(174)	499
Total other comprehensive income, net of tax	2,985	6,115	4,745	18,218
Comprehensive income	$ 15,010	$ 18,252	$ 29,849	$ 41,536

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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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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