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Schedule of Investments Classified by Contractual Maturity Date (Details)	Sep. 30, 2021 USD ($)
Marketable Securities [Line Items]
Amortized Cost	$ 238,809,528
Estimated fair value	264,844,942
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Marketable Securities [Line Items]
Amortized Cost	36,316,313
Estimated fair value	37,279,237
Redeemable Preferred Stock [Member]
Marketable Securities [Line Items]
Amortized Cost	268,941
Estimated fair value	282,466
Cemeteries and Mortuaries
Marketable Securities [Line Items]
Amortized Cost	469,744
Estimated fair value	474,140
Due In 25 Years [Member]
Marketable Securities [Line Items]
Amortized Cost	62,693,405
Estimated fair value	66,205,403
Due In 510 Years [Member]
Marketable Securities [Line Items]
Amortized Cost	71,364,711
Estimated fair value	79,246,211
Due in More Than 10 Years [Member]
Marketable Securities [Line Items]
Amortized Cost	67,696,414
Estimated fair value	$ 81,357,485

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