CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	Class A Common Stock Common Stock	Class B Common Stock Common Stock
Balance at beginning of period at Dec. 31, 2022	$ 1,524,865	$ 584,709	$ (538,612)	$ 1,145,006	$ (11,989)	$ 343,528	$ 2,011	$ 212
Increase (Decrease) in Stockholders' Equity
Consolidated net income	62,375			42,575		19,800
Foreign currency translation adjustments	9,112				7,434	1,678
Cantor purchase of Cantor units from Newmark Holdings upon redemption/ exchange of FPUs	1,760					1,760
Dividends to common stockholders	(20,906)			(20,906)
Purchase of non-controlling interest/limited partnership interests	(21,946)	(3,462)				(18,484)
Earnings distributions to limited partnership interests and other noncontrolling interests	(42,107)					(42,107)
Grant of exchangeability, redemption and issuance of Class A common stock	84,610	61,351				23,175	84
Contributions of capital to and from Cantor for equity-based compensation	(2,782)	(2,182)				(600)
Repurchase of Class A Common Stock	(37,429)		(30,623)			(6,806)
Restricted stock units compensation	21,130	17,320				3,810
Balance at end of period at Dec. 31, 2023	1,578,682	657,736	(569,235)	1,166,675	(4,555)	325,754	2,095	212
Increase (Decrease) in Stockholders' Equity
Consolidated net income	85,491			61,234		24,257
Foreign currency translation adjustments	(8,434)				(6,732)	(1,702)
Cantor purchase of Cantor units from Newmark Holdings upon redemption/ exchange of FPUs	2,330					2,330
Dividends to common stockholders	(20,624)			(20,624)
Purchase of non-controlling interest/limited partnership interests	(12,307)	(9,066)				(3,241)
Earnings distributions to limited partnership interests and other noncontrolling interests	(25,832)					(25,832)
Grant of exchangeability, redemption and issuance of Class A common stock	172,721	126,980				45,591	150
Contributions of capital to and from Cantor for equity-based compensation	(51,461)	(41,331)				(10,130)
Repurchase of Class A Common Stock	(212,570)		(171,024)			(41,546)
Forfeiture of Class A common stock	(6,535)	410	(5,672)			(1,273)
Restricted stock units compensation	22,708	18,272				4,436
Balance at end of period at Dec. 31, 2024	1,524,169	753,001	(745,931)	1,207,285	(11,287)	318,644	2,245	212
Increase (Decrease) in Stockholders' Equity
Consolidated net income	155,446			126,186		29,260
Foreign currency translation adjustments	16,905				14,095	2,810
Cantor purchase of Cantor units from Newmark Holdings upon redemption/ exchange of FPUs	2,213					2,213
Dividends to common stockholders	(21,723)			(21,723)
Exchange of Cantor Units for Newmark Class A common stock	0	90,030				(90,102)	72
Earnings distributions to limited partnership interests and other noncontrolling interests	(14,592)					(14,592)
Grant of exchangeability, redemption and issuance of Class A common stock	162,868	118,740				43,977	151
Contributions of capital to and from Cantor for equity-based compensation	(2,292)	(2,047)				(245)
Repurchase of Class A Common Stock	(127,067)		(106,343)			(20,724)
Forfeiture of Class A common stock	(2,010)	352	(2,048)			(314)
Restricted stock units compensation	43,038	36,216				6,822
Other	2,800	2,611	(243)			432
Balance at end of period at Dec. 31, 2025	$ 1,739,755	$ 998,903	$ (854,565)	$ 1,311,748	$ 2,808	$ 278,181	$ 2,468	$ 212