Summary of Significant Accounting Policies - Revenue recognition, cost of revenue and operating expenses, and other income (expense) (Details) ₨ in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2020 INR (₨)	Mar. 31, 2020 USD ($)
Revenue Recognition
Reimbursements of travel and out-of-pocket expenses	$ 5,422	$ 13,271	$ 12,924
Costs of Revenue and Operating Expenses
Advertising and promotional expenses	$ 557	$ 477	$ 306
Other income (expense)
Intercompany note				₨ 20,000,000	$ 267,341