Intangible Assets and Goodwill (Goodwill) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Goodwill
Beginning balance	$ 1,324,179
Impairment	(198,169)	$ 0
Acquisition	4,338
Currency impact	(5,313)
Ending balance	1,125,035
Commerce Services
Goodwill
Beginning balance	821,960
Impairment	(198,169)
Acquisition	4,338
Currency impact	0
Ending balance	628,129
Commerce Services \| Global Ecommerce
Goodwill
Beginning balance	609,431
Impairment	(198,169)
Acquisition	0
Currency impact	0
Ending balance	411,262
Commerce Services \| Presort Services
Goodwill
Beginning balance	212,529
Impairment	0
Acquisition	4,338
Currency impact	0
Ending balance	216,867
SendTech Solutions
Goodwill
Beginning balance	502,219
Impairment	0
Acquisition	0
Currency impact	(5,313)
Ending balance	$ 496,906

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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