Pension Plans and Other Post Retirement Benefits - Anticipated Pension Payments Under Pension Plans (Details) - Pension Plan $ in Thousands	Dec. 31, 2017 USD ($)
CDT
Assumptions:
2018 (six months ended June 30)	$ 304
2019	674
2020	727
2021	821
2022	904
2023 to 2027	5,652
Total	9,082
GXS Germany
Assumptions:
2018 (six months ended June 30)	484
2019	997
2020	1,004
2021	1,047
2022	1,057
2023 to 2027	5,637
Total	10,226
GXS Philippines
Assumptions:
2018 (six months ended June 30)	51
2019	131
2020	149
2021	240
2022	270
2023 to 2027	1,990
Total	$ 2,831

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Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

+ 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 (f)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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Amount of benefits for defined benefit plan expected to be paid in remainder of fiscal year.

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