Annual report pursuant to Section 13 and 15(d)

Basis Of Presentation And Summary Of Significant Accounting Policies (Reconciliation of Cash, Cash Equivalents and Restricted Cash) (Details)

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Basis Of Presentation And Summary Of Significant Accounting Policies (Reconciliation of Cash, Cash Equivalents and Restricted Cash) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]        
Cash and cash equivalents $ 27,074 $ 69,083 $ 62,786  
Restricted cash included in Land and building held for development, net 1,088 1,088 1,088 $ 1,100
Cash and cash equivalents and restricted cash at the end of the period $ 28,162 $ 70,171 $ 63,874 $ 38,467