Significant Accounting Policies (FV) (Details) - USD ($)	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Accounting hedges
Derivative Instruments:
Fair value of derivative	$ 0	$ 0	$ 0

Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

No definition available.

Name:	us-gaap_InterestRateDerivativesAtFairValueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant