Pension Plans and Other Post Retirement Benefits - Anticipated Pension Payments Under Pension Plans (Details) - Pension Plan $ in Thousands	Dec. 31, 2018 USD ($)
CDT defined benefit plan
Assumptions:
2019 (six months ended June 30)	$ 319
2020	682
2021	780
2022	868
2023	974
2024 to 2028	5,856
Total	9,479
GXS GER defined benefit plan
Assumptions:
2019 (six months ended June 30)	500
2020	1,006
2021	1,034
2022	1,041
2023	1,044
2024 to 2028	5,367
Total	9,992
GXS PHP defined benefit plan
Assumptions:
2019 (six months ended June 30)	59
2020	118
2021	216
2022	246
2023	205
2024 to 2028	1,158
Total	$ 2,002

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108410482&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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