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Employee benefit plans (Tables)

3 Months Ended

Mar. 31, 2013

Defined Benefit Pension Plans [Member]

Components of Net Periodic Defined Benefit Cost

Defined benefit plans—The components of net periodic defined benefit pension cost (income) are presented in the table below.

		Three months ended March  31,
		2012				2013
		(In thousands)
Interest cost		$	628			$	572
Expected return on plan assets			(914	)			(1,000	)
Recognized actuarial losses			331				309
Total		$	45			$	(119	)

OPEB [Member]

Components of Net Periodic Defined Benefit Cost

Postretirement benefits—The components of net periodic postretirement benefits other than pension cost are presented in the table below.

		Three months ended March  31,
		2012				2013
		(In thousands)
Interest cost		$	39			$	26
Amortization of prior service credit			(174	)			(171	)
Recognized actuarial gain			(25	)			(37	)
Total		$	(160	)		$	(182	)

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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=21915506&loc=d3e1928-114920

+ Details

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