COPT Defense Properties Quarterly report pursuant to Section 13 or 15(d)

Investing Receivables - Investing Receivables (Details) - Investing Receivables - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis	$ 84,093	$ 83,825
Allowance for credit losses	(1,676)	(1,599)	$ (2,080)	$ (2,851)
Investing receivables, net	82,417	82,226
Notes receivable from the City of Huntsville
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis	79,053	77,784
Other investing loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis	$ 5,040	$ 6,041

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

Amount, before allowance for credit loss, of financing receivable.