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Equity (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 30, 2021 $ / shares | Jul. 02, 2021 $ / shares | May 05, 2021 $ / shares | Apr. 30, 2021 $ / shares | Feb. 17, 2021 $ / shares | Feb. 01, 2021 $ / shares | Jun. 30, 2021 USD ($) Vote $ / shares shares | Apr. 30, 2021 USD ($) shares | Mar. 31, 2021 USD ($) $ / shares shares | Sep. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) Vote $ / shares shares | Mar. 31, 2021 $ / shares shares | Jun. 30, 2020 USD ($) $ / shares shares | Mar. 31, 2020 USD ($) | Jun. 30, 2021 USD ($) item Vote $ / shares shares | Jun. 30, 2020 USD ($) $ / shares shares | Dec. 31, 2020 $ / shares | Dec. 31, 2019 | Jul. 20, 2018 | Jul. 03, 2018
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of shares under public offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 328,014 | $ 38,008 |  |  |  |
Repurchase of common stock |  |  |  |  |  |  |  |  |  |  | $ 23,460 |  | $ 1,470 |  | 23,460 | 12,761 |  |  |  |
Redemption of operating partnership units |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21,110 | $ 1,600 |  |  |  |
Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.01 |  |  |  | $ 0.01 |  |  |  | $ 0.01 |  | $ 0.01 |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | 0.34 |  | $ 0.30 |  | $ 0.67 | $ 0.60 |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 222,463 |  |  |  |  |
Chief Executive Officer | 2021 Annual incentive agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual base salary |  |  |  |  |  |  |  | $ 1,200 |  |  |  |  |  |  |  |  |  |  |  |
Annual cash payment |  |  |  |  |  |  |  | 800 |  |  |  |  |  |  |  |  |  |  |  |
Annual performance cash bonus at target performance |  |  |  |  |  |  |  | 2,900 |  |  |  |  |  |  |  |  |  |  |  |
Annual performance cash bonus at threshold performance |  |  |  |  |  |  |  | 1,500 |  |  |  |  |  |  |  |  |  |  |  |
Annual performance cash bonus at maximum performance. |  |  |  |  |  |  |  | 4,400 |  |  |  |  |  |  |  |  |  |  |  |
Additional annual performance cash bonus in the event of extraordinary performance |  |  |  |  |  |  |  | 700 |  |  |  |  |  |  |  |  |  |  |  |
Restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares withheld for taxes | shares |  |  |  |  |  |  |  |  |  |  |  | 140,744 |  |  |  |  |  |  |  |
Restricted common stock | Board of Directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) | shares |  |  |  |  |  |  |  |  | 27,864 |  |  |  |  |  |  |  |  |  |  |
Restricted common stock | Employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) | shares |  |  |  |  |  |  |  |  | 257,726 |  |  |  |  |  |  |  |  |  |  |
Total grant date fair value |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,100 |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  | 0.20% |  |  |  |  | 33.00% |  |  |  |  |  |
Restricted common stock | Employees | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  | 33.00% |  |  |  |  |  |  |  |  |  |  |
Restricted common stock | Employees | First anniversaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  | 0.20% |  |  |  |  |  |  |  |  |  |  |
Restricted common stock | Employees | First anniversaries | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  | 33.00% |  |  |  |  |  |  |  |  |  |  |
Restricted common stock | Employees | Second anniversaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  | 0.20% |  |  |  |  |  |  |  |  |  |  |
Restricted common stock | Employees | Second anniversaries | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  | 0.33% |  |  |  |  |  |  |  |  |  |  |
Performance-based restricted stock | Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock vested during period (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 448,980 |  |  |  |  |  |  |  |
Number of shares issued in net settlement | shares |  |  |  |  |  |  |  |  |  |  |  | 229,083 |  |  |  |  |  |  |  |
Acquisition Related Grant | Chief Executive Officer | 2021 Annual incentive agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant value |  |  |  |  |  |  |  | $ 3,000 |  |  |  |  |  |  |  |  |  |  |  |
Acquisition Related Grant | Chief Executive Officer | Third anniversaries | 2021 Annual incentive agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Time Based Vesting Equity Award | Chief Executive Officer | 2021 Annual incentive agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) | shares |  |  |  |  |  |  |  | 184,729 |  |  |  |  |  |  |  |  |  |  |  |
Total grant date fair value |  |  |  |  |  |  |  | $ 3,100 |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant value |  |  |  |  |  |  |  | $ 3,000 |  |  |  |  |  |  |  |  |  |  |  |
Performance Based TSR Equity Award | Chief Executive Officer | 2021 Annual incentive agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant value |  |  |  |  |  |  |  | $ 12,000 |  |  |  |  |  |  |  |  |  |  |  |
8.25% Series A preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Return on the preferred shares issued to third parties by its subsidiary REIT (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.25% | 8.25% | 8.25% |  |  |
7.75% Series B preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Return on the preferred shares issued to third parties by its subsidiary REIT (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.75% | 7.75% | 7.75% |  |  |
8.50% Series C preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Return on the preferred shares issued to third parties by its subsidiary REIT (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.50% | 8.50% | 8.50% |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued price per share (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 18.46 |  | $ 15.48 |  | $ 18.46 | $ 15.48 |  |  | $ 18.46 |  |  |  |  |
Number of common stock sold (in shares) | shares |  |  |  |  |  |  |  |  |  |  | 9,282,479 |  | 1,958,008 |  | 19,422,879 | 3,308,008 |  |  |  |
Proceeds from issuance of shares under public offering |  |  |  |  |  |  |  |  | $ 12,400 |  |  |  |  |  |  |  |  |  |  |
Number of shares purchased | shares |  |  |  |  |  |  |  | 600,000 |  |  | 1,399,999 |  | 376,000 |  | 1,399,999 | 1,625,777 |  |  |  |
Repurchase of common stock |  |  |  |  |  |  |  |  |  | $ 11,100 | $ 14 |  | $ 3 |  | $ 14 | $ 16 |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared (in dollars per share) | $ / shares | $ 0.35 |  | $ 0.34 |  | $ 0.33 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock | Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares purchased | shares |  |  |  |  |  |  |  | 800,000 |  |  |  |  |  |  |  |  |  |  |  |
Common Stock | Board of Directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total grant date fair value |  |  |  |  |  |  |  |  | $ 400 |  |  |  |  |  |  |  |  |  |  |
Preferred Stock | 8.25% Series A preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared on redeemable preferred stock (in dollars per share) | $ / shares |  |  |  | $ 0.515625 |  | $ 0.515625 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock | 7.75% Series B preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared on redeemable preferred stock (in dollars per share) | $ / shares |  |  |  | 0.484375 |  | 0.484375 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock | 8.50% Series C preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared on redeemable preferred stock (in dollars per share) | $ / shares |  |  |  | $ 0.53125 |  | $ 0.53125 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock | 6.375% Series D preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  | 6.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared on redeemable preferred stock (in dollars per share) | $ / shares |  | $ 0.256771 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Return on the preferred shares issued to third parties by its subsidiary REIT (as a percent) | 6.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, redemption amount |  |  |  |  |  |  | $ 93,300 |  |  |  | 93,300 |  |  |  | 93,300 |  |  |  |  |
Total Arbor Realty Trust, Inc. Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock |  |  |  |  |  |  |  |  |  |  | $ 23,460 |  | $ 1,470 |  | $ 23,460 | $ 12,761 |  |  |  |
Operating Partnership Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion ratio for operating partnership units to common stock shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |
Operating Partnership Units | Special voting preferred shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.01 |  |  |  | $ 0.01 |  |  |  | $ 0.01 |  |  |  |  |
Number of vote per share of Special Voting Preferred Shares | Vote |  |  |  |  |  |  | 1 |  |  |  | 1 |  |  |  | 1 |  |  |  |  |
OP units outstanding (in shares) | shares |  |  |  |  |  |  | 16,352,233 |  |  |  | 16,352,233 |  |  |  | 16,352,233 |  |  |  |  |
Voting power of outstanding stock (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.30% |  |  |  |  |
5.25% Convertible Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.25% | 5.25% | 5.25%
Public offering | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock sold (in shares) | shares |  |  |  |  |  |  | 6,000,000 |  | 7,000,000 |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of shares under public offering |  |  |  |  |  |  | $ 110,600 |  | $ 108,200 |  |  |  |  |  |  |  |  |  |  |
Public offering | Preferred Stock | 6.375% Series D preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock (in shares) | shares |  |  |  |  |  |  | 9,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Return on the preferred shares issued to third parties by its subsidiary REIT (as a percent) |  |  |  |  |  |  | 6.375% |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, liquidation preference (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 25.00 |  |  |  | $ 25.00 |  |  |  | $ 25.00 |  |  |  |  |
Proceeds from issuance of preferred stock |  |  |  |  |  |  | $ 222,600 |  |  |  |  |  |  |  |  |  |  |  |  |
At-The-Market | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock sold (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,422,879 |  |  |  |  |
Proceeds from issuance of shares under public offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 109,200 |  |  |  |  |
Redemption of operating partnership units |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21,100 |  |  |  |  |
Number of ACM's members from whom the OP units redeemed | item |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |

X
- Definition Amount of additional annual performance cash bonus in the event of extraordinary performance. + References No definition available. + Details
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- Definition Amount of annual performance cash bonus at maximum performance. + References No definition available. + Details
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- Definition Number of members in operating partnership. + References No definition available. + Details
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- Definition Number of voting rights per share. + References No definition available. + Details
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- Definition Represents conversion ratio of operating partnership units to common stock shares. + References No definition available. + Details
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- Definition The number of operating partnership units outstanding. + References No definition available. + Details
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