| Cover | 12 Months Ended |
| Dec. 31, 2022 | |
| Document Information [Line Items] | |
| Document Type | DEF 14A |
| Amendment Flag | false |
| Entity Information [Line Items] | |
| Entity Registrant Name | SmartStop Self Storage REIT, Inc. |
| Entity Central Index Key | 0001585389 |
| Pay vs Performance Disclosure | 12 Months Ended | 16 Months Ended | 21 Months Ended | ||
| Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Apr. 15, 2021 | Dec. 31, 2022 | |
| Pay vs Performance Disclosure [Table] | |||||
| Pay vs Performance [Table Text Block] | Pay Versus Performance Compensation Actually Paid The table below sets forth information concerning the “compensation actually paid,” as determined rules “Non-PEO Summary Summary Compensation (3) Compensation (3) Average Summary Non-PEO (2) Average Non-PEO (2)(3) Value of Initial Fixed $100 Investment Company Net (6) Company Same-Store (7) Year Company Total (4) Peer Group Total (4)(5) 2022 $ 3,499,872 N/A $ 3,797,556 N/A $ 766,787 $ 797,477 $ 164.97 $ 100.62 $ 21,669,452 16.5 % 2021 (1) $ 3,454,270 $ 536,443 $ 5,390,178 $ 831,624 $ 688,610 $ 884,798 $ 157.73 $ 134.06 $ (19,564,718 ) 24.5 % 2020 N/A $ 1,510,151 N/A $ 1,628,937 $ 1,090,702 $ 1,167,535 $ 103.30 $ 94.88 $ (51,206,803 ) 7.8 % (1) For the fiscal year ended December 31, 2021, Michael S. McClure (our “Prior CEO”) was our principal executive officer until April 15, 2021, at which time H. Michael Schwartz (our “Current CEO”) became our principal executive officer. (2) (3) See tables below for the calculation of Compensation Actually Paid for each year presented. (4) Total Shareholder Return and Peer Group Total Shareholder Return assume $100 invested on December 31, 2019, including reinvestment of dividends. (5) The Peer Group referenced for Peer Group Total Shareholder Return consists of the FTSE NAREIT All Equity Index. (6) Net Income (Loss) represents the net income or loss generated in each calendar year for the Company and all of its consolidated subsidiaries, calculated in accordance with GAAP. (7) We have identified Same-Store NOI Growth as our most important financial measure used by us to link compensation paid to our NEOs to company performance. Same-Store NOI is a non-GAAP Calculation of Compensation Actuall Paid 2022 Current CEO Prior CEO Average for Non-PEO NEOs Summary Compensation Table Total $ 3,499,872 $ N/A $ 766,787 Deduction for amounts reported in “Stock Awards” column of the Summary Compensation Table $ 1,900,000 $ N/A $ 212,500 Increase for fair value of awards granted during year presented that remain unvested as of year end presented $ 1,557,805 $ N/A $ 174,228 Increase for fair value of awards granted during year presented that vested during the year presented $ 359,494 $ N/A $ 40,207 Increase for change in fair value from prior year-end year-end year-end $ 29,782 $ N/A $ 3,049 Increase for change in fair value from prior year-end $ 20,469 $ N/A $ 2,027 Deduction of fair value of awards granted prior to year presented that were forfeited during year presented $ — $ N/A $ — Increase based upon incremental fair value of awards modified during year presented $ — $ N/A $ — Increase based on dividends or other earnings paid during year presented, prior to vesting date of award $ 230,134 $ N/A $ 23,679 Compensation Actually Paid $ 3,797,556 $ N/A $ 797,477 2021 Current CEO Prior CEO Average for Non-PEO NEOs Summary Compensation Table Total $ 3,454,270 $ 536,443 $ 688,610 Deduction for amounts reported in “Stock Awards” column of the Summary Compensation Table $ 1,850,000 $ — $ 177,500 Increase for fair value of awards granted during year presented that remain unvested as of year end presented $ 2,291,862 $ — $ 219,895 Increase for fair value of awards granted during year presented that vested during the year presented $ 528,891 $ — $ 50,745 Increase for change in fair value from prior year-end year-end year-end $ 676,181 $ 314,251 $ 72,481 Increase for change in fair value from prior year-end $ 107,776 $ 56,044 $ 12,394 Deduction of fair value of awards granted prior to year presented that were forfeited during year presented $ — $ 119,179 $ — Increase based upon incremental fair value of awards modified during year presented $ — $ — $ — Increase based on dividends or other earnings paid during year presented, prior to vesting date of award $ 181,198 $ 44,065 $ 18,173 Compensation Actually Paid $ 5,390,178 $ 831,624 $ 884,798 2020 Current CEO Prior CEO Average for Non-PEO NEOs Summary Compensation Table Total $ N/A $ 1,510,151 $ 1,090,702 Deduction for amounts reported in “Stock Awards” column of the Summary Compensation Table $ N/A $ 650,000 $ 431,250 Increase for fair value of awards granted during year presented that remain unvested as of year end presented $ N/A $ 580,996 $ 384,377 Increase for fair value of awards granted during year presented that vested during the year presented $ N/A $ 134,076 $ 88,954 Increase for change in fair value from prior year-end year-end year-end $ N/A $ 10,244 $ 6,427 Increase for change in fair value from prior year-end $ N/A $ — $ — Deduction of fair value of awards granted prior to year presented that were forfeited during year presented $ N/A $ — $ — Increase based upon incremental fair value of awards modified during year presented $ N/A $ — $ — Increase based on dividends or other earnings paid during year presented, prior to vesting date of award $ N/A $ 43,470 $ 28,325 Compensation Actually Paid $ N/A $ 1,628,937 $ 1,167,535 | ||||
| Company Selected Measure Name | Same-Store NOI Growth | ||||
| Named Executive Officers, Footnote [Text Block] | For the fiscal years ended December 31, 2022 and 2021, our Non-PEO NEOs consisted of: James Barry, Joe Robinson, Wayne Johnson, and Michael Terjung. For the fiscal year ended December 31, 2020, our Non-PEO NEOs consisted of: H. Michael Schwartz, James Barry, Joe Robinson, and Wayne Johnson. | ||||
| Peer Group Issuers, Footnote [Text Block] | The Peer Group referenced for Peer Group Total Shareholder Return consists of the FTSE NAREIT All Equity Index. | ||||
| Adjustment To PEO Compensation, Footnote [Text Block] | 2022 Current CEO Prior CEO Average for Non-PEO NEOs Summary Compensation Table Total $ 3,499,872 $ N/A $ 766,787 Deduction for amounts reported in “Stock Awards” column of the Summary Compensation Table $ 1,900,000 $ N/A $ 212,500 Increase for fair value of awards granted during year presented that remain unvested as of year end presented $ 1,557,805 $ N/A $ 174,228 Increase for fair value of awards granted during year presented that vested during the year presented $ 359,494 $ N/A $ 40,207 Increase for change in fair value from prior year-end year-end year-end $ 29,782 $ N/A $ 3,049 Increase for change in fair value from prior year-end $ 20,469 $ N/A $ 2,027 Deduction of fair value of awards granted prior to year presented that were forfeited during year presented $ — $ N/A $ — Increase based upon incremental fair value of awards modified during year presented $ — $ N/A $ — Increase based on dividends or other earnings paid during year presented, prior to vesting date of award $ 230,134 $ N/A $ 23,679 Compensation Actually Paid $ 3,797,556 $ N/A $ 797,477 2021 Current CEO Prior CEO Average for Non-PEO NEOs Summary Compensation Table Total $ 3,454,270 $ 536,443 $ 688,610 Deduction for amounts reported in “Stock Awards” column of the Summary Compensation Table $ 1,850,000 $ — $ 177,500 Increase for fair value of awards granted during year presented that remain unvested as of year end presented $ 2,291,862 $ — $ 219,895 Increase for fair value of awards granted during year presented that vested during the year presented $ 528,891 $ — $ 50,745 Increase for change in fair value from prior year-end year-end year-end $ 676,181 $ 314,251 $ 72,481 Increase for change in fair value from prior year-end $ 107,776 $ 56,044 $ 12,394 Deduction of fair value of awards granted prior to year presented that were forfeited during year presented $ — $ 119,179 $ — Increase based upon incremental fair value of awards modified during year presented $ — $ — $ — Increase based on dividends or other earnings paid during year presented, prior to vesting date of award $ 181,198 $ 44,065 $ 18,173 Compensation Actually Paid $ 5,390,178 $ 831,624 $ 884,798 2020 Current CEO Prior CEO Average for Non-PEO NEOs Summary Compensation Table Total $ N/A $ 1,510,151 $ 1,090,702 Deduction for amounts reported in “Stock Awards” column of the Summary Compensation Table $ N/A $ 650,000 $ 431,250 Increase for fair value of awards granted during year presented that remain unvested as of year end presented $ N/A $ 580,996 $ 384,377 Increase for fair value of awards granted during year presented that vested during the year presented $ N/A $ 134,076 $ 88,954 Increase for change in fair value from prior year-end year-end year-end $ N/A $ 10,244 $ 6,427 Increase for change in fair value from prior year-end $ N/A $ — $ — Deduction of fair value of awards granted prior to year presented that were forfeited during year presented $ N/A $ — $ — Increase based upon incremental fair value of awards modified during year presented $ N/A $ — $ — Increase based on dividends or other earnings paid during year presented, prior to vesting date of award $ N/A $ 43,470 $ 28,325 Compensation Actually Paid $ N/A $ 1,628,937 $ 1,167,535 | ||||
| Non-PEO NEO Average Total Compensation Amount | $ 766,787 | $ 688,610 | $ 1,090,702 | ||
| Non-PEO NEO Average Compensation Actually Paid Amount | $ 797,477 | 884,798 | 1,167,535 | ||
| Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | 2022 Current CEO Prior CEO Average for Non-PEO NEOs Summary Compensation Table Total $ 3,499,872 $ N/A $ 766,787 Deduction for amounts reported in “Stock Awards” column of the Summary Compensation Table $ 1,900,000 $ N/A $ 212,500 Increase for fair value of awards granted during year presented that remain unvested as of year end presented $ 1,557,805 $ N/A $ 174,228 Increase for fair value of awards granted during year presented that vested during the year presented $ 359,494 $ N/A $ 40,207 Increase for change in fair value from prior year-end year-end year-end $ 29,782 $ N/A $ 3,049 Increase for change in fair value from prior year-end $ 20,469 $ N/A $ 2,027 Deduction of fair value of awards granted prior to year presented that were forfeited during year presented $ — $ N/A $ — Increase based upon incremental fair value of awards modified during year presented $ — $ N/A $ — Increase based on dividends or other earnings paid during year presented, prior to vesting date of award $ 230,134 $ N/A $ 23,679 Compensation Actually Paid $ 3,797,556 $ N/A $ 797,477 2021 Current CEO Prior CEO Average for Non-PEO NEOs Summary Compensation Table Total $ 3,454,270 $ 536,443 $ 688,610 Deduction for amounts reported in “Stock Awards” column of the Summary Compensation Table $ 1,850,000 $ — $ 177,500 Increase for fair value of awards granted during year presented that remain unvested as of year end presented $ 2,291,862 $ — $ 219,895 Increase for fair value of awards granted during year presented that vested during the year presented $ 528,891 $ — $ 50,745 Increase for change in fair value from prior year-end year-end year-end $ 676,181 $ 314,251 $ 72,481 Increase for change in fair value from prior year-end $ 107,776 $ 56,044 $ 12,394 Deduction of fair value of awards granted prior to year presented that were forfeited during year presented $ — $ 119,179 $ — Increase based upon incremental fair value of awards modified during year presented $ — $ — $ — Increase based on dividends or other earnings paid during year presented, prior to vesting date of award $ 181,198 $ 44,065 $ 18,173 Compensation Actually Paid $ 5,390,178 $ 831,624 $ 884,798 2020 Current CEO Prior CEO Average for Non-PEO NEOs Summary Compensation Table Total $ N/A $ 1,510,151 $ 1,090,702 Deduction for amounts reported in “Stock Awards” column of the Summary Compensation Table $ N/A $ 650,000 $ 431,250 Increase for fair value of awards granted during year presented that remain unvested as of year end presented $ N/A $ 580,996 $ 384,377 Increase for fair value of awards granted during year presented that vested during the year presented $ N/A $ 134,076 $ 88,954 Increase for change in fair value from prior year-end year-end year-end $ N/A $ 10,244 $ 6,427 Increase for change in fair value from prior year-end $ N/A $ — $ — Deduction of fair value of awards granted prior to year presented that were forfeited during year presented $ N/A $ — $ — Increase based upon incremental fair value of awards modified during year presented $ N/A $ — $ — Increase based on dividends or other earnings paid during year presented, prior to vesting date of award $ N/A $ 43,470 $ 28,325 Compensation Actually Paid $ N/A $ 1,628,937 $ 1,167,535 | ||||
| Compensation Actually Paid vs. Total Shareholder Return [Text Block] | |||||
| Compensation Actually Paid vs. Net Income [Text Block] | |||||
| Compensation Actually Paid vs. Company Selected Measure [Text Block] | |||||
| Tabular List [Table Text Block] | Relationship between Compensation Actually Paid and Company Performance Metrics When determining the com p ur certain non -fi non-financial • Same-store NOI growth • MFFO, as adjusted per share • Same-store revenue growth | ||||
| Total Shareholder Return Amount | $ 164.97 | 157.73 | 103.3 | ||
| Peer Group Total Shareholder Return Amount | 100.62 | 134.06 | 94.88 | ||
| Net Income (Loss) | $ 21,669,452 | $ (19,564,718) | $ (51,206,803) | ||
| Company Selected Measure Amount | 0.165 | 0.245 | 0.078 | ||
| PEO Name | Michael S. McClure | H. Michael Schwartz | |||
| Measure [Axis]: 1 | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Measure Name | Same-store NOI growth | ||||
| Non-GAAP Measure Description [Text Block] | We have identified Same-Store NOI Growth as our most important financial measure used by us to link compensation paid to our NEOs to company performance. Same-Store NOI is a non-GAAP | ||||
| Measure [Axis]: 2 | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Measure Name | MFFO, as adjusted per share | ||||
| Measure [Axis]: 3 | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Measure Name | Same-store revenue growth | ||||
| H. Michael Schwartz [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| PEO Total Compensation Amount | $ 3,499,872 | $ 3,454,270 | |||
| PEO Actually Paid Compensation Amount | 3,797,556 | 5,390,178 | |||
| Michael S. McClure [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| PEO Total Compensation Amount | 536,443 | $ 1,510,151 | |||
| PEO Actually Paid Compensation Amount | 831,624 | 1,628,937 | |||
| PEO [Member] | H. Michael Schwartz [Member] | Stock Awards [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 1,900,000 | 1,850,000 | |||
| PEO [Member] | H. Michael Schwartz [Member] | Fair Value of Awards Granted During Year Presented That Remain Unvested As of Year End Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 1,557,805 | 2,291,862 | |||
| PEO [Member] | H. Michael Schwartz [Member] | Fair Value of Awards Granted During Year Presented That Vested During The Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 359,494 | 528,891 | |||
| PEO [Member] | H. Michael Schwartz [Member] | Change In Fair Value From Prior Year End Presented To YearEnd Presented of Awards Granted Prior To Year Presented That Were Outstanding And Unvested As of YearEnd Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 29,782 | 676,181 | |||
| PEO [Member] | H. Michael Schwartz [Member] | Change In Fair Value From Prior Year End Presented To Vesting Date of Awards Granted Prior To Year Presented That Vested During Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 20,469 | 107,776 | |||
| PEO [Member] | H. Michael Schwartz [Member] | Fair Value of Awards Granted Prior To Year Presented That Were Forfeited During Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 0 | 0 | |||
| PEO [Member] | H. Michael Schwartz [Member] | Incremental Fair Value of Awards Modified During Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 0 | 0 | |||
| PEO [Member] | H. Michael Schwartz [Member] | Dividends or Other Earnings Paid During Year Presented, Prior To Vesting Date of Award [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 230,134 | 181,198 | |||
| PEO [Member] | Michael S. McClure [Member] | Stock Awards [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 0 | 650,000 | |||
| PEO [Member] | Michael S. McClure [Member] | Fair Value of Awards Granted During Year Presented That Remain Unvested As of Year End Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 0 | 580,996 | |||
| PEO [Member] | Michael S. McClure [Member] | Fair Value of Awards Granted During Year Presented That Vested During The Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 0 | 134,076 | |||
| PEO [Member] | Michael S. McClure [Member] | Change In Fair Value From Prior Year End Presented To YearEnd Presented of Awards Granted Prior To Year Presented That Were Outstanding And Unvested As of YearEnd Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 314,251 | 10,244 | |||
| PEO [Member] | Michael S. McClure [Member] | Change In Fair Value From Prior Year End Presented To Vesting Date of Awards Granted Prior To Year Presented That Vested During Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 56,044 | 0 | |||
| PEO [Member] | Michael S. McClure [Member] | Fair Value of Awards Granted Prior To Year Presented That Were Forfeited During Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 119,179 | 0 | |||
| PEO [Member] | Michael S. McClure [Member] | Incremental Fair Value of Awards Modified During Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 0 | 0 | |||
| PEO [Member] | Michael S. McClure [Member] | Dividends or Other Earnings Paid During Year Presented, Prior To Vesting Date of Award [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 44,065 | 43,470 | |||
| Non-PEO NEO [Member] | Stock Awards [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 212,500 | 177,500 | 431,250 | ||
| Non-PEO NEO [Member] | Fair Value of Awards Granted During Year Presented That Remain Unvested As of Year End Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 174,228 | 219,895 | 384,377 | ||
| Non-PEO NEO [Member] | Fair Value of Awards Granted During Year Presented That Vested During The Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 40,207 | 50,745 | 88,954 | ||
| Non-PEO NEO [Member] | Change In Fair Value From Prior Year End Presented To YearEnd Presented of Awards Granted Prior To Year Presented That Were Outstanding And Unvested As of YearEnd Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 3,049 | 72,481 | 6,427 | ||
| Non-PEO NEO [Member] | Change In Fair Value From Prior Year End Presented To Vesting Date of Awards Granted Prior To Year Presented That Vested During Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 2,027 | 12,394 | 0 | ||
| Non-PEO NEO [Member] | Fair Value of Awards Granted Prior To Year Presented That Were Forfeited During Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 0 | 0 | 0 | ||
| Non-PEO NEO [Member] | Incremental Fair Value of Awards Modified During Year Presented [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | 0 | 0 | 0 | ||
| Non-PEO NEO [Member] | Dividends or Other Earnings Paid During Year Presented, Prior To Vesting Date of Award [Member] | |||||
| Pay vs Performance Disclosure [Table] | |||||
| Adjustment to Compensation Amount | $ 23,679 | $ 18,173 | $ 28,325 | ||
