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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Income and Comprehensive Income
Net income	$ 7,609	$ 5,261
Other comprehensive income, net of taxes:
Pension adjustment	19	15
Unrealized gain on debt securities, net of reclassification adjustments	7	22
Comprehensive income	$ 7,635	$ 5,298

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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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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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