Pension and Postretirement Benefits - Accumulated benefit obligation in excess of plan assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Domestic Pension Plans \| Funded Plans
Accumulated benefit obligation in excess of plan assets
Projected Benefit obligation	$ 13,435	$ 15,348
Accumulated benefit obligation	13,435	15,348
Fair value of Plan assets	10,872	10,624
Domestic Pension Plans \| Unfunded Pension Plans
Accumulated benefit obligation in excess of plan assets
Projected Benefit obligation	10,536	11,570
Accumulated benefit obligation	10,227	11,322
Fair value of Plan assets	0	0
Foreign Plans \| Funded Plans
Accumulated benefit obligation in excess of plan assets
Projected Benefit obligation	11,460	15,387
Accumulated benefit obligation	10,823	14,307
Fair value of Plan assets	11,560	12,997
Foreign Plans \| Unfunded Pension Plans
Accumulated benefit obligation in excess of plan assets
Projected Benefit obligation	2,911	3,032
Accumulated benefit obligation	2,911	3,032
Fair value of Plan assets	$ 0	$ 0

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6503844

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 55

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=32704760&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920

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Balance Type:	credit
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- Definition

If aggregate disclosures are presented, the aggregate fair value of plan assets for plans with benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2417-114920

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