Mortgage Loans, Construction Loan and Interest Rate Swaps - Schedule of Notional and Fair Value of Interest Rate Swaps (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Long-Term Debt
Fair value Interest Rate Derivative Liabilities	$ 365	$ 3,995
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement
Long-Term Debt
Current Notional Value	90,254	90,984
Interest rate swap agreements	855	(3,807)
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due On September 1, 2023
Long-Term Debt
Current Notional Value	7,133	7,204
Fair value Interest Rate Derivative Liabilities	71	249
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due On January 1, 2025
Long-Term Debt
Current Notional Value	8,990	9,068
Fair value Interest Rate Derivative Assets	88
Fair value Interest Rate Derivative Liabilities		390
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due on January 1, 2025.
Long-Term Debt
Current Notional Value	1,538	1,552
Fair value Interest Rate Derivative Assets	20
Fair value Interest Rate Derivative Liabilities		40
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due on September 1, 2025
Long-Term Debt
Current Notional Value	2,165	9,608
Fair value Interest Rate Derivative Assets	93
Fair value Interest Rate Derivative Liabilities		334
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due on September 1, 2025.
Long-Term Debt
Current Notional Value	9,521	2,185
Fair value Interest Rate Derivative Assets	28
Fair value Interest Rate Derivative Liabilities		68
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due on November 17, 2026
Long-Term Debt
Current Notional Value	11,272	11,359
Fair value Interest Rate Derivative Assets	129
Fair value Interest Rate Derivative Liabilities		518
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due on May 1, 2026
Long-Term Debt
Current Notional Value	12,185	12,291
Fair value Interest Rate Derivative Assets	216
Fair value Interest Rate Derivative Liabilities		369
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due on March 1, 2027
Long-Term Debt
Current Notional Value	10,538	10,621
Fair value Interest Rate Derivative Liabilities	73	641
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due on February 1, 2028
Long-Term Debt
Current Notional Value	6,487	6,524
Fair value Interest Rate Derivative Liabilities	213	641
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due on August 1, 2027
Long-Term Debt
Current Notional Value	9,405	9,476
Fair value Interest Rate Derivative Liabilities	8	526
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due on January 1, 2030
Long-Term Debt
Current Notional Value	6,139	6,182
Fair value Interest Rate Derivative Assets	158
Fair value Interest Rate Derivative Liabilities		219
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | Mortgage due on July 1, 2030
Long-Term Debt
Current Notional Value	4,881	4,914
Fair value Interest Rate Derivative Assets	$ 488	$ 188
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due On September 1, 2023
Long-Term Debt
Interest Strike Rate	2.84%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due On January 1, 2025
Long-Term Debt
Interest Strike Rate	2.26%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due on January 1, 2025.
Long-Term Debt
Interest Strike Rate	1.932%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due on September 1, 2025
Long-Term Debt
Interest Strike Rate	2.118%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due on September 1, 2025.
Long-Term Debt
Interest Strike Rate	2.015%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due on November 17, 2026
Long-Term Debt
Interest Strike Rate	2.085%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due on May 1, 2026
Long-Term Debt
Interest Strike Rate	1.91%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due on March 1, 2027
Long-Term Debt
Interest Strike Rate	2.501%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due on February 1, 2028
Long-Term Debt
Interest Strike Rate	2.782%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due on August 1, 2027
Long-Term Debt
Interest Strike Rate	4.39%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due on January 1, 2030
Long-Term Debt
Interest Strike Rate	1.849%
Designated as Hedging Instrument | Cash flow hedges | Interest rate swap agreement | LIBOR | Mortgage due on July 1, 2030
Long-Term Debt
Interest Strike Rate	0.942%