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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Other comprehensive income
Adjustments related to retirement plans, tax expense	$ 9	$ 9	$ 18	$ 18

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- References

No definition available.

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- Definition

Amount of tax expense (benefit) allocated to other comprehensive income (loss).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
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