Financial Instruments and Fair Value Disclosures (Investments) (Details) - USD ($)	3 Months Ended	6 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financial Instruments and Fair Value Disclosures
Net gain/(loss) on investment securities	$ (531,050)	$ 37,478	$ 828,620	$ 37,253
Less: Realized gain/(loss) on investment securities	447,255		447,255
Unrealized gain/(loss) on investment securities	$ (978,305)	$ 37,478	$ 381,365	$ 37,253

Amount of unrealized gain (loss) on investment in marketable security.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(7)(c))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Name:	us-gaap_MarketableSecuritiesUnrealizedGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration