Related Party Disclosure - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Dec. 27, 2017
Unsecured Term Loan [Member]
Schedule of Other Related Party Transactions [Line Items]
Line of credit facility, maximum	$ 200,000,000
Operating Partnership [Member] | Unsecured Term Loan [Member]
Schedule of Other Related Party Transactions [Line Items]
Line of credit facility, maximum		$ 200,000,000
Operating Partnership [Member] | Mr. Lampert [Member]
Schedule of Other Related Party Transactions [Line Items]
Ownership interest percentage held by related party	36.20%
Operating Partnership [Member] | Sears Holdings Corporation [Member] | Mr. Lampert [Member]
Schedule of Other Related Party Transactions [Line Items]
Beneficiary Ownership interest percentage held by related party	73.30%
Ownership interest percentage held by related party	36.20%
Operating Partnership [Member] | Sears Holdings Corporation [Member] | Mr. Lampert [Member] | Class A Common Shares [Member]
Schedule of Other Related Party Transactions [Line Items]
Ownership interest percentage held by related party	2.70%
Operating Partnership [Member] | Sears Holdings Corporation [Member] | Mr. Lampert [Member] | Class B Non-Economic Common Shares [Member]
Schedule of Other Related Party Transactions [Line Items]
Ownership interest percentage held by related party	100.00%