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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net income	$ 9,631	$ 8,868
Available-for-sale debt securities:
Change in net unrealized (losses) gains on debt securities without other-than-temporary impairment	1,218	(2,147)
Reclassification adjustment for net losses recognized in net income
Net unrealized (losses) gains on available-for-sale debt securities	1,218	(2,147)
Employee benefit plans:
Net actuarial (loss)	(407)	(1)
Reclassification adjustment for amortization of prior service cost and net actuarial loss recognized in net income	69	71
Net unrealized gains (losses) on employee benefit plans	(338)	70
Other comprehensive (loss) income, before tax	880	(2,077)
Income tax (benefit) expense	184	(436)
Other comprehensive income (loss), net	696	(1,641)
Total comprehensive income	$ 10,327	$ 7,227

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