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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Other comprehensive income
Adjustments related to retirement plans tax expense	$ 36	$ 50	$ 109	$ 150

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

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-Name Accounting Standards Codification



-Topic 220



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-Publisher FASB



-Name Accounting Standards Codification



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-Publisher SEC



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-Number 210



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-Publisher SEC



-Name Regulation S-X (SX)



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