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Subsequent Events - Additional Information (Detail) | Jul. 26, 2021 $ / shares shares | Jun. 30, 2021 $ / shares | Dec. 31, 2020 $ / shares
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Subsequent Event [Line Items] |  |  |
Common stock, par value | $ / shares |  | $ 0.01 | $ 0.01
Subsequent Event | Merger Agreement |  |  |
Subsequent Event [Line Items] |  |  |
Common stock, par value | $ / shares | $ 0.01 |  |
Number of common share issued for each common unit tendered for redemption | shares | 1 |  |
Subsequent Event | Merger Agreement | Steadfast Apartment REIT, Inc. |  |  |
Subsequent Event [Line Items] |  |  |
Common stock, par value | $ / shares | $ 0.01 |  |
Shares received through Merger | shares | 99,800,000 |  |
Subsequent Event | Merger Agreement | Steadfast Apartment REIT, Inc. | Common Shares |  |  |
Subsequent Event [Line Items] |  |  |
Right to receive shares exchange ratio for each share | 0.905 |  |
Subsequent Event | Merger Agreement | Steadfast Apartment REIT Operating Partnership, L.P. |  |  |
Subsequent Event [Line Items] |  |  |
Shares received through Merger | shares | 6,400,000 |  |
Subsequent Event | Merger Agreement | Steadfast Apartment REIT Operating Partnership, L.P. | Common Units |  |  |
Subsequent Event [Line Items] |  |  |
Right to receive shares exchange ratio for each share | 1 |  |

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- Definition Right to receive shares exchange ratio for each share. + References No definition available. + Details
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- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 + Details
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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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