Stock-Based Compensation - Stock Option Grants Valuation (Details)	12 Months Ended
Mar. 31, 2019
Minimum \| Stock Options
Assumptions:
Purchase price of common stock percent	100.00%

Purchase price of common stock expressed as a percentage of its fair value.

No definition available.

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration