Credit Facility, Notes Payable and Derivative Instruments (Details) $ in Thousands					3 Months Ended			12 Months Ended
	May 03, 2021 USD ($) item	Jul. 31, 2020 USD ($)	Apr. 27, 2020 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2022 USD ($) contract	Sep. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Notes Payable and Revolving Credit Facility
Amortization of financing costs					$ 39		$ 63
Other Operating Activities, Cash Flow Statement					14,100
Increase (Decrease) in Security Deposits					$ 76		27
Debt Instrument, Term					4 years 10 days			4 years 3 months 10 days
Note balance					$ 57,487			$ 57,769
Line Of Credit Cash Paid Other							74
Additional Interest Expense					388
Interest Expense, Total					$ 4,801	$ 4,801	5,037
Weighted average interest rate basis					2.91%			2.87%
Interest Rate Swap [Member]
Notes Payable and Revolving Credit Facility
Derivative, Notional Amount					$ 350,000
Number of interest rate swaps entered | contract					6
Derivative Instruments in Hedges, Liabilities, at Fair Value					$ 10,827			$ 6,554
Interest Rate Swap Agreement One [Member]
Notes Payable and Revolving Credit Facility
Derivative, Notional Amount					150,000
Interest Rate Swap Agreement Two [Member]
Notes Payable and Revolving Credit Facility
Derivative, Notional Amount					$ 200,000
Forward Starting Interest Rate Swaps [Member]
Notes Payable and Revolving Credit Facility
Number of interest rate swaps entered | contract					5
Credit Facility [Member]
Notes Payable and Revolving Credit Facility
Credit Facility maximum borrowing capacity	$ 750,000
Maximum consolidated leverage ratio under financial covenants	60
Maximum consolidated secured recourse leverage ratio under financial covenant	10.00%
Minimum fixed charge coverage ratio under financial covenants	1.50
Minimum unsecured interest coverage ratio under financial covenant	1.50
Maximum consolidated secured leverage ratio under financial covenants	30.00%
Maximum consolidated unsecured leverage ratio under financial covenants	60.00%
Percentage of net proceeds raised, covenant	75.00%
Other Operating Activities, Cash Flow Statement					$ 14,100			50,100
Repayments of Lines of Credit					0			151,800
Interest Expense, Total					3,852	$ 3,614
Minimum Net Worth Required for Compliance	$ 345,000
Revolving Credit Facility [Member]
Notes Payable and Revolving Credit Facility
Credit Facility maximum borrowing capacity	$ 400,000
Amortization of financing costs					349		463
Increase (Decrease) in Security Deposits					3,852
Debt instrument extensions | item	2
Extension option	6 months
Term Loan [Member]
Notes Payable and Revolving Credit Facility
Credit Facility maximum borrowing capacity	$ 350,000
Rosedale Loan [Member]
Notes Payable and Revolving Credit Facility
Long term debt		$ 14,800			$ 14,235			14,330
Debt Instrument, Interest Rate, Stated Percentage		3.85%
Debt Instrument, Maturity Date					Jul. 31, 2025
Interest expense					$ 137		141
Debt Instrument, Term		25 years
Principal payments made					95			91
Dumfries Loan [Member]
Notes Payable and Revolving Credit Facility
Long term debt			$ 12,074		$ 11,552			$ 11,624
Debt Instrument, Interest Rate, Stated Percentage			4.68%
Debt Instrument, Maturity Date					Jun. 01, 2024
Interest expense					$ 133		138
Debt Instrument, Term			10 years
Principal payments made					72		69
Cantor Loan [Member]
Notes Payable and Revolving Credit Facility
Long term debt				$ 32,097	31,700		31,815
Debt Instrument, Interest Rate, Stated Percentage				5.22%
Interest expense					415		419
Debt Instrument, Term				30 years
Principal payments made					$ 115		$ 0
The Term loan [Member] | Interest Rate Swap Agreement One [Member]
Notes Payable and Revolving Credit Facility
Debt Instrument, Basis Spread on Variable Rate					1.91%
The Term loan [Member] | Interest Rate Swap Agreement Two [Member]
Notes Payable and Revolving Credit Facility
Debt Instrument, Basis Spread on Variable Rate					1.61%
The Term loan [Member] | Interest Rate Swap Agreement Three [Member]
Notes Payable and Revolving Credit Facility
Debt Instrument, Basis Spread on Variable Rate					1.45%
Accordion [Member] | Credit Facility [Member]
Notes Payable and Revolving Credit Facility
Credit Facility maximum borrowing capacity	$ 500,000