Concentration of Credit Risk (Details)	Mar. 31, 2018
Risks and Uncertainties [Abstract]
Number of countries in which entity operates	7

The number of countries in which the entity operates as of balance sheet date.

No definition available.

Name:	us-gaap_NumberOfCountriesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant