Related Party Disclosure - Additional Information (Detail) - USD ($) $ in Thousands				12 Months Ended
	Dec. 27, 2017	Feb. 23, 2017	Jul. 07, 2015	Dec. 31, 2017	Dec. 31, 2016
Schedule of Other Related Party Transactions [Line Items]
Line of credit, current funding				$ 230,000
Transaction Services Agreement [Member]
Schedule of Other Related Party Transactions [Line Items]
Transition service agreement period			18 months
Transition service agreement expiration date Date			Jan. 07, 2017
Unsecured Delayed Draw Term Loan [Member]
Schedule of Other Related Party Transactions [Line Items]
Line of credit, maturity date		Dec. 31, 2017
Operating Partnership [Member] | Unsecured Delayed Draw Term Loan [Member]
Schedule of Other Related Party Transactions [Line Items]
Principal amount outstanding at termination	$ 85,000
Line of credit, maturity date				Dec. 31, 2017
Line of credit, current funding				$ 85,000
Operating Partnership [Member] | ESL [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] | ESL [Member]
Schedule of Other Related Party Transactions [Line Items]
Beneficiary Ownership interest percentage held by related party				54.00%	53.20%
Ownership interest percentage held by related party				36.20%	43.30%
Operating Partnership [Member] | Sears Holdings Corporation [Member] | ESL [Member] | Class A Common Shares [Member]
Schedule of Other Related Party Transactions [Line Items]
Ownership interest percentage held by related party				2.90%	3.70%
Operating Partnership [Member] | Sears Holdings Corporation [Member] | ESL [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%	100.00%