Related Party Transactions - Schedule of Amount Outstanding to Affiliates (Detail) - USD ($) |
Mar. 31, 2018 |
Dec. 31, 2017 |
---|---|---|
Related Party Transaction [Line Items] | ||
Due to Affiliate | $ 8,146,000 | $ 8,118,000 |
Contingent Advisor Payment Incurred [Member] | ||
Related Party Transaction [Line Items] | ||
Due to Affiliate | 7,760,000 | 7,744,000 |
Asset And Property Management Fees [Member] | ||
Related Party Transaction [Line Items] | ||
Due to Affiliate | 325,000 | 316,000 |
Operating Expense [Member] | ||
Related Party Transaction [Line Items] | ||
Due to Affiliate | 9,000 | 6,000 |
Construction Management Fee [Member] | ||
Related Party Transaction [Line Items] | ||
Due to Affiliate | 1,000 | 1,000 |
Property Management Fee [Member] | ||
Related Party Transaction [Line Items] | ||
Due to Affiliate | 51,000 | 43,000 |
Lease Commissions [Member] | ||
Related Party Transaction [Line Items] | ||
Due to Affiliate | $ 0 | $ 8,000 |