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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Unrealized holding gains on available for sale securities, tax expense (benefit)	$ 583	$ (196)	$ 324
Reclassification adjustment for gain recognized in net income, tax expense (benefit)	5	7	(95)
Adjustment for postretirement benefits, tax expense (benefit)	$ (5)	$ 10	$ (9)

X

- Definition

Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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