Commitments and Contingencies (Service Provider Contracts) (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Year ending March 31:
2019	$ 1,916
2020	8
Total minimum payments	$ 1,924

The amount of service provider expense expected to be recognized during year two of the five succeeding fiscal years.

No definition available.

Name:	EGHT_ServiceProvidersFutureMinimumPaymentsDueInTwoYears
Namespace Prefix:	EGHT_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant