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v3.22.4

Equity (Details) |  |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 15, 2023 $ / shares | Jan. 03, 2023 $ / shares | Nov. 02, 2022 $ / shares | Jul. 27, 2022 $ / shares | May 04, 2022 $ / shares | Apr. 01, 2022 $ / shares | Feb. 16, 2022 $ / shares | Jan. 03, 2022 $ / shares | Jul. 31, 2021 USD ($) shares | Apr. 30, 2021 USD ($) shares | Mar. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) Vote $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 shares | Dec. 31, 2018 shares | Dec. 31, 2017 shares | Nov. 30, 2022 shares
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of shares under public offering | $ |  |  |  |  |  |  |  |  |  |  |  | $ 408,735,000 | $ 514,593,000 | $ 183,585,000 |  |  |  |
Number of shares authorized |  |  |  |  |  |  |  |  |  |  |  | 500,000,000 | 500,000,000 |  |  |  |  |
Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  | $ 0.01 | $ 0.01 |  |  |  |  |
Amount available for repurchase | $ |  |  |  |  |  |  |  |  |  |  |  | $ 96,100,000 |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred stock | $ |  |  |  |  |  |  |  |  |  |  |  | $ 77,522,000 | $ 555,999,000 |  |  |  |  |
Percentage of dividend paid to common stock and preferred stock shareholders represented ordinary income to our stockholders |  |  |  |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00% |  |  |  |
Employee compensation and benefits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense | $ |  |  |  |  |  |  |  |  |  |  |  | $ 14,200,000 | $ 9,300,000 | $ 8,600,000 |  |  |  |
Selling and administrative expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense | $ |  |  |  |  |  |  |  |  |  |  |  | 800,000 | 600,000 | $ 500,000 |  |  |  |
Restricted common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  | 21,300,000 | $ 17,100,000 |  |  |  |  |
Unrecognized compensation cost | $ |  |  |  |  |  |  |  |  |  |  |  | $ 9,000,000.0 |  |  |  |  |  |
Remaining weighted-average vesting period |  |  |  |  |  |  |  |  |  |  |  | 1 year 10 months 24 days |  |  |  |  |  |
Restricted stock vested with grant date fair value (in shares) |  |  |  |  |  |  |  |  |  |  |  | 1,070,248 |  |  |  |  |  |
Unvested restricted common stock outstanding |  |  |  |  |  |  |  |  |  |  |  | 1,389,427 | 1,257,199 |  |  |  |  |
Restricted stock vested during the period, grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  | $ 12,000,000.0 |  |  |  |  |  |
Restricted common stock | Chief executive officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 45,928 |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000 |  |  |  |
Restricted common stock | Employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 652,596 |  |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  | $ 11,100,000 |  | $ 3,400,000 |  |  |  |
Number of shares issued in net settlement |  |  |  |  |  |  |  |  |  |  |  |  |  | 314,957 |  |  |  |
Restricted common stock | Employees | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 384,758 |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,400,000 |  |  |  |  |
Restricted common stock | Employees | Vested on grant date | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 232,899 | 144,951 |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  | $ 4,000,000.0 | $ 2,400,000 |  |  |  |  |
Restricted common stock | Employees | First anniversaries | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 101,475 |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  | $ 3,700,000 | $ 1,700,000 |  |  |  |  |
Restricted common stock | Employees | Second anniversaries | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 181,968 | 88,788 |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  | $ 3,100,000 | $ 1,500,000 |  |  |  |  |
Restricted common stock | Employees | Third anniversaries | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 9,951 | 25,479 |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  | $ 200,000 | $ 400,000 |  |  |  |  |
Restricted common stock | Employees | Fourth anniversaries | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 9,938 | 24,065 |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  | $ 200,000 | $ 400,000 |  |  |  |  |
Restricted stock units (RSUs) | Director | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 25,012 |  |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  | $ 400,000 |  |  |  |  |  |
Restricted stock units (RSUs) | Chief executive officer | 2020 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 189,873 |  |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  | $ 3,300,000 |  |  |  |  |  |
Restricted stock units (RSUs) | Employees | First anniversaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 217,840 |  |  |  |  |  |
Performance-based restricted stock | Chief executive officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 381,503 |  |  |  |  | 357,569 |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000 |  |  |  |
Restricted stock vested during period (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 448,980 | 421,348 |  |  |  |
Vesting period (in years) |  |  |  |  |  |  |  |  |  |  |  | 4 years | 4 years | 4 years |  |  |  |
Performance-based restricted stock | Chief executive officer | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 275,569 |  |  |  |
Time Based Vesting Equity Award | Chief executive officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  | 165,746 | 184,729 |  |  |  |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  | $ 3,000,000.0 | $ 3,100,000 |  |  |  |  |  |  |  |
Series E preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Return on the preferred shares issued to third parties by its subsidiary REIT (as a percent) |  |  |  |  |  |  |  |  |  |  |  | 6.25% | 6.25% |  |  |  |  |
Series F preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Return on the preferred shares issued to third parties by its subsidiary REIT (as a percent) |  |  |  |  |  |  |  |  |  |  |  | 6.25% | 6.25% |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued price per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 16.57 |  |  |  |  |  |  |
Number of common stock sold (in shares) |  |  |  |  |  |  |  |  |  |  |  | 26,335,788 | (29,140,369) | 14,790,121 |  |  |  |
Number of shares purchased |  |  |  |  |  |  |  |  |  |  |  |  | (1,962,499) | (2,285,178) |  |  |  |
Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount authorized under the Stock repurchase program | $ |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000.0 |  |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared (in dollars per share) | $ / shares | $ 0.40 |  | $ 0.40 | $ 0.39 | $ 0.38 |  | $ 0.37 |  |  |  |  |  |  |  |  |  |  |
Common Stock | Director |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000 |  |  |  |
Number of shares issued in net settlement |  |  |  |  |  |  |  |  |  |  |  |  |  | 52,735 |  |  |  |
Common Stock | Chief executive officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock vested during period, net settled (in shares) |  |  |  |  |  |  |  |  |  |  |  | 120,665 | 150,530 | 182,467 |  |  |  |
Preferred Stock | 6.375%Series D Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared on redeemable preferred stock (in dollars per share) | $ / shares |  | $ 0.3984375 | 0.3984375 | 0.3984375 |  | $ 0.3984375 |  | $ 0.3984375 |  |  |  |  |  |  |  |  |  |
Preferred Stock | Series E preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock sold (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 5,750,000 |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared on redeemable preferred stock (in dollars per share) | $ / shares |  | $ 0.390625 | 0.390625 | 0.390625 |  | 0.390625 |  | 0.390625 |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividend, fixed rate |  |  |  |  |  |  |  |  |  |  |  |  | 6.25% |  |  |  |  |
Preferred Stock | Series F preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock sold (in shares) |  |  |  |  |  |  |  |  |  |  |  | 3,292,000 | 8,050,000 |  |  |  |  |
Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared on redeemable preferred stock (in dollars per share) | $ / shares |  |  | $ 0.390625 | $ 0.390625 |  | $ 0.390625 |  | $ 0.46875 |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred stock | $ |  |  |  |  |  |  |  |  |  |  | $ 77,100,000 |  |  |  |  |  |  |
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 |  |  |  |  |  |
Number of vote per share of Special Voting Preferred Shares | Vote |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |
OP units outstanding (in shares) |  |  |  |  |  |  |  |  |  |  |  | 16,293,589 |  |  |  |  |  |
Voting power of outstanding stock (as a percent) |  |  |  |  |  |  |  |  |  |  |  | 8.40% |  |  |  |  |  |
ACM Acquisition | Performance-based restricted stock | Chief executive officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 313,152 | 246,508 | 294,985 | 357,569 |
Total grant date fair value | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,900,000 |  |  |  |
Vesting period (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |
ACM Acquisition | Common Stock | Chief executive officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grants during the period (in shares) |  |  |  |  |  |  |  |  |  |  |  | 381,503 |  |  |  |  |  |
Restricted stock vested during period (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 448,980 | 421,348 |  |  |  |
Restricted stock vested during period, net settled (in shares) |  |  |  |  |  |  |  |  |  |  |  | 186,772 | 229,083 | 215,014 |  |  |  |
Public offering | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of shares under public offering | $ |  |  |  |  |  |  |  |  |  |  | $ 123,700,000 |  |  |  |  |  |  |
Public offering | Preferred Stock | 6.375%Series D Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 9,200,000 |  |  |  |  |
Public offering | Preferred Stock | Series E preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 5,750,000 |  |  |  |  |
Return on the preferred shares issued to third parties by its subsidiary REIT (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 6.375% |  |  |  |  |
Public offering | Preferred Stock | Series F preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock (in shares) |  |  |  |  |  |  |  |  |  |  | 3,292,000 |  | 8,050,000 |  |  |  |  |
Return on the preferred shares issued to third parties by its subsidiary REIT (as a percent) |  |  |  |  |  |  |  |  |  |  | 6.25% |  | 6.25% |  |  |  |  |
At-The-Market | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares available under the amended agreement |  |  |  |  |  |  |  |  |  |  |  | 18,290,000 |  |  |  |  |  | 25,000,000
Number of common stock sold (in shares) |  |  |  |  |  |  |  |  |  |  | 7,475,000 |  |  |  |  |  |  |
Proceeds from issuance of shares under public offering | $ |  |  |  |  |  |  |  |  |  |  |  | $ 285,000,000.0 |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred stock | $ |  |  |  |  |  |  |  |  |  |  |  | $ 18,860,788 |  |  |  |  |  |

X
- Definition Represents the number of shares permitted to be issued under the equity offering plan. + References No definition available. + Details
Name: | abr_NumberOfSharesAuthorizedToBeIssuedUnderAgreement
Namespace Prefix: | abr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of voting rights per share. + References No definition available. + Details
Name: | abr_NumberOfVotesPerShare
Namespace Prefix: | abr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents conversion ratio of operating partnership units to common stock shares. + References No definition available. + Details
Name: | abr_OperatingPartnershipUnitsConversionRatio
Namespace Prefix: | abr_
Data Type: | xbrli:pureItemType
Balance Type: | na
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