Commitments and Contingencies - Defined Benefit Plan (Details) - India subsidiary	12 Months Ended
Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Percentage of employees eligible for benefits	52.00%
Minimum service period of employees to be eligible under plan	5 years
Number of days salary payable under termination, resignation, or retirement	15 days

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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