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Employee benefit plans (Tables)

9 Months Ended

Sep. 30, 2014

Compensation and Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost

Components of net periodic benefit cost are as follows:

		Pension Benefits								Postretirement Life Insurance Benefits
Three months ended September 30,		2014				2013				2014		2013
Net periodic pension cost:
Service cost												$	11
Interest cost		$	169			$	162						33
Expected return on plan assets			(227	)			(207	)
Amortization of prior service cost
Amortization of unrecognized net loss			23				45						28
Net periodic pension cost		$	(35	)		$						$	72

		Pension Benefits								Postretirement Life Insurance Benefits
Nine months ended September 30,		2014				2013				2014		2013
Net periodic pension cost:
Service cost												$	32
Interest cost		$	507			$	485						100
Expected return on plan assets			(681	)			(620	)
Amortization of prior service cost
Amortization of unrecognized net loss			69				135						86
Net periodic pension cost		$	(105	)		$						$	218

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- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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