Pension Plans and Other Post Retirement Benefits - Schedule of Defined Benefit Plans and Long-Term Employee Benefit Obligations (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Assumptions:
Total benefit obligation	$ 64,099	$ 60,362
Current portion of benefit obligation	1,886	1,735
Non-current portion of benefit obligation	62,213	58,627
Pension Plan | CDT
Assumptions:
Total benefit obligation	30,825	28,881
Current portion of benefit obligation	642	583
Non-current portion of benefit obligation	30,183	28,298
Pension Plan | GXS Germany
Assumptions:
Total benefit obligation	25,304	23,730
Current portion of benefit obligation	983	926
Non-current portion of benefit obligation	24,321	22,804
Pension Plan | GXS Philippines
Assumptions:
Total benefit obligation	4,566	4,495
Current portion of benefit obligation	102	81
Non-current portion of benefit obligation	4,464	4,414
Other plans
Assumptions:
Total benefit obligation	3,404	3,256
Current portion of benefit obligation	159	145
Non-current portion of benefit obligation	$ 3,245	$ 3,111