Related-Party Transactions - Fees and Reimbursements Paid or Accrued by Liquidating Trust (Detail) - Winthrop Management [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Fees and reimbursements paid by the Trust	$ 10,687	$ 3,817
Base Asset Management Fee [Member]
Related Party Transaction [Line Items]
Fees and reimbursements paid by the Trust	964	3,258
Property Management Fee [Member]
Related Party Transaction [Line Items]
Fees and reimbursements paid by the Trust	227	532
Termination Fee [Member]
Related Party Transaction [Line Items]
Fees and reimbursements paid by the Trust	$ 9,496
Construction Management Fee [Member]
Related Party Transaction [Line Items]
Fees and reimbursements paid by the Trust		$ 27