Non-Controlling Interests - Additional Information (Detail) - USD ($) shares in Thousands, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Minority Interest [Line Items] | |||
| Properties contributed as part of UPREIT transactions, value | $ 0 | $ 15,797 | $ 10,498 |
| Properties contributed as part of UPREIT transactions, value, net of debt assumed | $ 128,746 | $ 128,746 | |
| OP units, issued | 1,737 | 1,737 | |
| OP units, outstanding | 1,737 | 1,737 | |
| Broadstone Net Lease, LLC | |||
| Minority Interest [Line Items] | |||
| Percentage of economic interests owned by non-controlling interests | 6.30% | 7.30% | 7.60% |