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v3.21.2

Related Party Transactions - Transactions With Executive Officers and Directors (Details) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended | 6 Months Ended |
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Jun. 28, 2021 USD ($) $ / shares shares | Apr. 27, 2021 USD ($) $ / shares shares | Mar. 16, 2021 USD ($) $ / shares shares | Jun. 30, 2021 $ / shares shares | Mar. 31, 2021 $ / shares shares | Jun. 30, 2020 shares | Jun. 30, 2021 USD ($) $ / shares shares | Jun. 30, 2020 shares | Dec. 13, 2017
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued, value | $ |  |  |  |  |  |  | $ 4,025 |  |
Common Class A |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Treasury stock repurchases (in shares) |  |  |  | 3,613,098 | 879,243 | 0 | 4,492,341 |  |
Shares repurchased price (in dollars per share) | $ / shares |  |  |  | $ 12.81 | $ 10.58 |  | $ 12.36 |  |
Limited partnership units exchange ratio (in percentage) |  |  |  |  |  |  |  |  | 1
Mr. Gosin |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
PSU conversion ratio (per share) |  |  | 0.9365 |  |  |  |  |  |
Value of LPU issued in exchange | $ |  |  | $ 5,800 |  |  |  |  |  |
Mr. Gosin | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Cash payment to redeem non exchangeable shares | $ | $ 1,100 |  |  |  |  |  |  |  |
Mr. Gosin | Common Class A |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) |  |  | 178,232 |  |  |  |  |  |
Stock issued (in shares) | 1,439,658 |  |  |  |  |  |  |  |
Share price (usd per share) | $ / shares |  |  | $ 11.09 |  |  |  |  |  |
Limited partnership units exchange ratio (in percentage) | 0.9403 |  |  |  |  |  |  |  |
Cash payment to redeem | $ | $ 800 |  |  |  |  |  |  |  |
Mr. Gosin | Common Class A | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued (in shares) | 12,500 |  |  |  |  |  |  |  |
Cash payment to redeem | $ | $ 300 |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 3,348,706 |  |  |  |  |  |  |  |
Mr. Gosin | Common Class A | Newmark Units |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) |  |  | 82,680 |  |  |  |  |  |
Mr. Gosin | PSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) |  |  | 526,828 |  |  |  |  |  |
Number of exchangeable (in shares) | 1,438,597.37 |  |  |  |  |  |  |  |
Mr. Gosin | PSU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 3,147,085 |  |  |  |  |  |  |  |
Mr. Gosin | Non Exchangeable PPSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PPSU redeemed (in shares) | 539,080.23 |  |  |  |  |  |  |  |
Mr. Gosin | Non Exchangeable PPSU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PPSU redeemed (in shares) | 264,985 |  |  |  |  |  |  |  |
Mr. Gosin | Non Exchangeable A P S U |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) |  |  | 30,871 |  |  |  |  |  |
Mr. Gosin | Non Exchangeable PSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU converted (in shares) | 443,871.60 |  |  |  |  |  |  |  |
Mr. Gosin | Non Exchangeable PSU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU converted (in shares) | 1,592,016 |  |  |  |  |  |  |  |
Mr. Gosin | Non Exchangeable HDU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable HUD (in shares) | 443,871.60 |  |  |  |  |  |  |  |
Payment to convert non exchangeable shares, net | $ | $ 5,400 |  |  |  |  |  |  |  |
Mr. Gosin | Non Exchangeable HDU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable HUD (in shares) | 1,592,016 |  |  |  |  |  |  |  |
Mr. Gosin | Exchangeable APSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 92,464.47 |  |  |  |  |  |  |  |
Mr. Gosin | Exchangeable APSU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 201,621 |  |  |  |  |  |  |  |
Mr. Gosin | Exchangeable PPSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable PPSU redeemed (in shares) | 60,753.97 |  |  |  |  |  |  |  |
Mr. Gosin | Exchangeable PPSU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable PPSU redeemed (in shares) | 80,891 |  |  |  |  |  |  |  |
Mr. Gosin | Holdings Unit |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 1,531,061.84 |  |  |  |  |  |  |  |
Mr. Gosin | Holdings Unit | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 3,348,706 |  |  |  |  |  |  |  |
Howard W. Lutnick |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued, value | $ |  |  | $ 21,600 |  |  |  |  |  |
Howard W. Lutnick | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU converted (in shares) | 1,131,774 |  |  |  |  |  |  |  |
Howard W. Lutnick | Common Class A |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued (in shares) | 263,025 | 5,154 |  |  |  |  |  |  |
Shares repurchased price (in dollars per share) | $ / shares |  | $ 10.67 |  |  |  |  |  |  |
PSU conversion ratio (per share) | 0.9403 |  |  |  |  |  |  |  |
Limited partnership units exchange ratio (in percentage) | 0.9403 |  |  |  |  |  |  |  |
Number of exchangeable PPSU redeemed (in shares) | 193,530 |  |  |  |  |  |  |  |
Cash payment to redeem | $ | $ 1,500 |  |  |  |  |  |  |  |
Number of non exchangeable PPSU redeemed (in shares) | 793,398 |  |  |  |  |  |  |  |
Howard W. Lutnick | Common Class A | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued (in shares) | 88,636 |  |  |  |  |  |  |  |
Howard W. Lutnick | PSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) | 279,725 |  |  |  |  |  |  |  |
Stock issued (in shares) | 2,736,103 |  | 4,423,457 |  |  |  |  |  |
Howard W. Lutnick | PSU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 520,380 |  |  |  |  |  |  |  |
Howard W. Lutnick | PSU | Common Class A | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 520,380 |  |  |  |  |  |  |  |
Howard W. Lutnick | Non Exchangeable PPSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued (in shares) |  |  | 1,770,016 |  |  |  |  |  |
Number of non exchangeable PPSU redeemed (in shares) | 602,462.94 |  |  |  |  |  |  |  |
Cash payment to redeem non exchangeable shares | $ | $ 8,800 |  |  |  |  |  |  |  |
Howard W. Lutnick | Non Exchangeable PPSU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Cash payment to redeem | $ | $ 1,500 |  |  |  |  |  |  |  |
Number of non exchangeable PPSU redeemed (in shares) | 1,018,390 |  |  |  |  |  |  |  |
Number of exchangeable PSU redeemed (in shares) | 425,766 |  |  |  |  |  |  |  |
Howard W. Lutnick | Non Exchangeable PSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) | 2,909,819 |  |  |  |  |  |  |  |
Number of non exchangeable PSU converted (in shares) | 552,482.62 |  |  |  |  |  |  |  |
Howard W. Lutnick | Non Exchangeable PSU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) | 88,636 |  |  |  |  |  |  |  |
Number of non exchangeable PSU converted (in shares) | 1,131,774 |  |  |  |  |  |  |  |
Howard W. Lutnick | Non Exchangeable HDU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Cash payment to redeem non exchangeable shares | $ | $ 8,000 |  |  |  |  |  |  |  |
Number of non exchangeable HUD (in shares) | 552,482.62 |  |  |  |  |  |  |  |
Howard W. Lutnick | Non Exchangeable HDU | Common Class A | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued (in shares) | 29,059 |  |  |  |  |  |  |  |
Howard W. Lutnick | BGC Holdings H U D | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Payment of withholding tax rate for common stock issue | $ | $ 8,000 |  |  |  |  |  |  |  |
Mr. Merkel |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) |  |  | 30,926 |  |  |  |  |  |
Payment of withholding tax rate for common stock issue | $ |  | $ 800 | $ 300 |  |  |  |  |  |
Number of share issued for non exchangeable PPSU (in shares) |  | 86,649 |  |  |  |  |  |  |
Shares repurchased price (in dollars per share) | $ / shares |  | $ 10.67 |  |  |  |  |  |  |
Mr. Merkel | Common Class A |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued (in shares) |  |  | 28,962 |  |  |  |  |  |
Share price (usd per share) | $ / shares |  |  | $ 11.09 |  |  |  |  |  |
Treasury stock repurchases (in shares) |  | 68,727 |  |  |  |  |  |  |
Mr. Merkel | PSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) |  | 73,387 |  |  |  |  |  |  |
Mr. Merkel | Non Exchangeable PPSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) |  | 19,426 |  |  |  |  |  |  |
Payment of withholding tax rate for common stock issue | $ |  | $ 200 |  |  |  |  |  |  |
Mr. Merkel | Non Exchangeable PSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of share issued for non exchangeable PPSU (in shares) |  | 145,384 |  |  |  |  |  |  |
Michael J. Rispoli |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Value of LPU issued in exchange | $ |  |  | $ 100 |  |  |  |  |  |
Michael J. Rispoli | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Cash payment to redeem non exchangeable shares | $ | $ 100 |  |  |  |  |  |  |  |
Michael J. Rispoli | Common Class A |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued (in shares) | 21,744 |  |  |  |  |  |  |  |
Share price (usd per share) | $ / shares |  |  | $ 11.09 |  |  |  |  |  |
PSU conversion ratio (per share) |  |  | 0.9365 |  |  |  |  |  |
Limited partnership units exchange ratio (in percentage) | 0.9403 |  |  |  |  |  |  |  |
Michael J. Rispoli | Common Class A | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued (in shares) | 383 |  |  |  |  |  |  |  |
Cash payment to redeem | $ | $ 100 |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 36,985 |  |  |  |  |  |  |  |
Michael J. Rispoli | PSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 23,124 |  |  |  |  |  |  |  |
Michael J. Rispoli | Non Exchangeable PPSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PPSU redeemed (in shares) | 4,917 |  |  |  |  |  |  |  |
Michael J. Rispoli | Non Exchangeable PSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) | 6,000 |  |  |  |  |  |  |  |
Number of non exchangeable PSU converted (in shares) | 5,846 |  |  |  |  |  |  |  |
Michael J. Rispoli | Non Exchangeable HDU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable HUD (in shares) | 5,846 |  |  |  |  |  |  |  |
Michael J. Rispoli | Holdings PSU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable (in shares) | 36,985 |  |  |  |  |  |  |  |
Michael J. Rispoli | Exchangeable PPSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable PPSU redeemed (in shares) | 18,668.77 |  |  |  |  |  |  |  |
Cash payment to redeem | $ | $ 200 |  |  |  |  |  |  |  |
Michael J. Rispoli | Exchangeable PPSU | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of exchangeable PPSU redeemed (in shares) | 29,791 |  |  |  |  |  |  |  |
Michael J. Rispoli | Restricted Stock |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Limited partnership units exchange ratio (in percentage) | 0.9403 |  |  |  |  |  |  |  |
Michael J. Rispoli | Restricted Stock | Common Class A |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued (in shares) | 5,642 |  |  |  |  |  |  |  |
Executive Officer | Common Class A |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Share price (usd per share) | $ / shares | $ 12.50 |  |  |  |  |  |  |  |
Executive Officer | Common Class A | BGC Partners Inc |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Share price (usd per share) | $ / shares | 5.86 |  |  |  |  |  |  |  |
Executive Officer | Common Class A | Nasdaq |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Share price (usd per share) | $ / shares | $ 177.11 |  |  |  |  |  |  |  |
Stephen M. Merkel | Common Class A |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Stock issued (in shares) | 48,072 |  |  |  |  |  |  |  |
Limited partnership units exchange ratio (in percentage) | 0.9403 |  |  |  |  |  |  |  |
Stephen M. Merkel | PSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) | 51,124.28 |  |  |  |  |  |  |  |
Stephen M. Merkel | Non Exchangeable PPSU |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PPSU redeemed (in shares) | 46,349.87 |  |  |  |  |  |  |  |
Cash payment to redeem non exchangeable shares | $ | $ 300 |  |  |  |  |  |  |  |
Preferred Units | Michael J. Rispoli |  |  |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |  |  |
Number of non exchangeable PSU redeemed (in shares) |  |  | 6,043 |  |  |  |  |  |
Payment of withholding tax rate for common stock issue | $ |  |  | $ 100 |  |  |  |  |  |
Number of share issued for non exchangeable PPSU (in shares) |  |  | 4,907 |  |  |  |  |  |
Determination price (in dollars per share) | $ / shares |  |  | $ 15.57 |  |  |  |  |  |

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