Represents derivative margin call position.

No definition available.

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- Definition

Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

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-Publisher FASB
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-SubTopic 10
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+ Details

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- Definition

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 30
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-Paragraph 6
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- Definition

Nominal mass used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of the liability arising from a financial instrument or a contract used to mitigate a specified risk (hedge), and which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer.

+ References

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-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss).

+ References

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- Details

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- Details

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- Details

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Note H - Derivative Financial Instruments (Details Textual)	6 Months Ended
	Sep. 30, 2021 USD ($) T	Mar. 31, 2021 USD ($)	Sep. 30, 2020 USD ($)
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	$ 26,353,840
Derivative, Collateral, Right to Reclaim Cash	4,158,248		$ 12,001,485
Derivative Margin Call Position	422,877
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Reclassification from AOCI, Current Period, Tax, Total	1,819,688
Closed Hedges with Hedged Transaction Still Expected to Occur [Member]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	23,467,120
Open Hedges Subject To Fair Value Changes [Member]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	$ 2,886,720
Designated as Hedging Instrument [Member] \| Short [Member]
Derivative, Nonmonetary Notional Amount, Mass (US Ton) \| T	22,500
Not Designated as Hedging Instrument [Member] \| Short [Member]
Derivative, Nonmonetary Notional Amount, Mass (US Ton) \| T	3,440
Not Designated as Hedging Instrument [Member] \| Long [Member]
Derivative, Nonmonetary Notional Amount, Mass (US Ton) \| T	9,160
Other Current Assets [Member]
Derivative, Collateral, Right to Reclaim Cash	$ 4,158,248	$ 12,001,485
Commodity Contract [Member] \| Accounts Payable and Accrued Liabilities [Member]
Hedging Liabilities, Current	1,049,320	$ 501,360
Nonoperating Income (Expense) [Member]
Derivative, Gain (Loss) on Derivative, Net, Total	$ (9,930,720)