Debt And Lines Of Credit , Table - Maturities and Amortization of debt and lines of credit (Details) - USD ($)	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total Due	$ 5,698,458
2015	141,959
2016	256,484
2017	443,555
2018	1,111,201
2019	567,449
Thereafter	3,177,810
Lines of Credit [Member]
Debt Instrument [Line Items]
Total Due	1,034,833
2015		$ 10,000
2016		10,000
2017		10,000
2018		1,004,833
2019		0
Thereafter		0
Mortgage maturities [Member]
Debt Instrument [Line Items]
Total Due	2,451,652
2015		70,678
2016		185,619
2017		315,330
2018		50,528
2019		521,582
Thereafter		1,307,915
Mortgage principal amortization [Member]
Debt Instrument [Line Items]
Total Due	942,061
2015		61,281
2016		60,865
2017		57,424
2018		54,019
2019		45,867
Thereafter		662,605
Secured borrowing [Member]
Debt Instrument [Line Items]
Total Due	3,393,713		$ 0
2015		131,959
2016		246,484
2017		372,754
2018		104,547
2019		567,449
Thereafter		1,970,520
Preferred Equity, Mandatorily Redeemable [Member]
Debt Instrument [Line Items]
Total Due	34,663
2015		0
2016		0
2017		27,373
2018		0
2019		0
Thereafter		7,290
Unsecured Debt
Debt Instrument [Line Items]
Total Due	2,304,745
2015		10,000
2016		10,000
2017		70,801
2018		1,006,654
2019		0
Thereafter		1,207,290
Unsecured Debt | Senior Unsecured Notes
Debt Instrument [Line Items]
Total Due	1,200,000
2015		0
2016		0
2017		0
2018		0
2019		0
Thereafter		1,200,000
Sun NG RV Resorts [Member] | Preferred Equity, Mandatorily Redeemable [Member]
Debt Instrument [Line Items]
Total Due	$ 35,249
2015		0
2016		0
2017		33,428
2018		1,821
2019		0
Thereafter		$ 0