Investments in Subsidiaries - Schedule of Ownership in Each Property (Details)	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Arbors on Forest Ridge | Bedford, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2014
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Cutter's Point | Richardson, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2014
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Silverbrook | Grand Prairie, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2014
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
The Summit at Sabal Park | Tampa, Florida
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2014
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Courtney Cove | Tampa, Florida
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2014
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Radbourne Lake | Charlotte, North Carolina
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2014
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Timber Creek | Charlotte, North Carolina
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2014
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Sabal Palm at Lake Buena Vista | Orlando, Florida
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2014
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Cornerstone | Orlando, Florida
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2015
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
The Preserve at Terrell Mill | Marietta, Georgia
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2015
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Versailles | Dallas, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2015
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Seasons 704 Apartments | West Palm Beach, Florida
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2015
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Madera Point | Mesa, Arizona
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2015
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Venue at 8651 | Fort Worth, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2015
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Parc500 | West Palm Beach, Florida
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2016
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
The Venue on Camelback | Phoenix, Arizona
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2016
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Old Farm | Houston, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2016
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Stone Creek at Old Farm | Houston, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2016
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Hollister Place | Houston, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2017
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Rockledge Apartments | Marietta, Georgia
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2017
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Atera Apartments | Dallas, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2017
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Crestmont Reserve | Dallas, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2018
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Brandywine I & II | Nashville, Tennessee
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2018
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Bella Vista | Phoenix, Arizona
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Fairways at San Marcos | Chandler Arizona
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2020
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
The Enclave | Tempe, Arizona
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
The Heritage | Phoenix, Arizona
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Summers Landing | Fort Worth, Texas
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
The Verandas at Lake Norman | Charlotte, North Carolina
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2021
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Residences at Glenview Reserve | Nashville, Tennessee
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Residences at West Place | Orlando, Florida
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Creekside At Matthews | Charlotte, North Carolina
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2021
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Avant at Pembroke Pines | Pembroke Pines, Florida
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Torreyana Apartments | Las Vegas, Nevada
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Six Forks Station | Raleigh North Carolina
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2021
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Arbors of Brentwood | Nashville, Tennessee
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Bloom | Las Vegas, Nevada
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
High House at Cary | Cary North Carolina
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2021
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%
Bella Solara | Las Vegas, Nevada
Wholly Owned Subsidiaries And Variable Interest Entities [Line Items]
Year of acquisition	2019
Effective ownership percentage, wholly owned subsidiary	100.00%	100.00%