ACCRUED AND OTHER LIABILITIES - Reserve for Tenant Improvements and Environmental Reserves (Details) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended		102 Months Ended
	Dec. 31, 2017 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) a	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Environmental reserves
Tenant improvement allowances and leasing commissions		$ 6,700			$ 6,700
Environmental Reserve		$ 67			$ 67	$ 81
Environmental Loss Contingency, Statement of Financial Position		Accrued and Other Liabilities-See Note 18			Accrued and Other Liabilities-See Note 18	Accrued and Other Liabilities-See Note 18
Environmental Reserve for Monitoring Environmental Remediation Work Previously Performed
Environmental reserves
Additional environmental reserve accrued			$ 500	$ 100	$ 700
Environmental costs funded					600
Environmental Reserve for Monitoring Environmental Remediation Work Previously Performed | Minimum
Environmental reserves
Estimated cost			500
Environmental Reserve for Monitoring Environmental Remediation Work Previously Performed | Maximum
Environmental reserves
Additional environmental reserve accrued	$ 100
Area of land (in acres) | a				1
Estimated cost			$ 1,000
Environmental Reserve		$ 100			100
Income Property, Multi-tenant, Shops at Legacy, Plano, Texas
Environmental reserves
Payment of tenant improvement allowances and leasing commissions		2,500
Remaining reserve for tenant improvements		$ 4,200			$ 4,200