Condensed Consolidated Statements of Changes in Equity - 6 months ended Jun. 30, 2017 - USD ($) $ in Thousands	Common Stock Class A	Common Stock Class C	Common Stock Class D	Treasury Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Total Stockholders' Equity	Noncontrolling Interest	Class A	Class C	Class D	Total
Balance at Dec. 31, 2016			$ 1	$ (8,358)	$ 155,536	$ (1,254)	$ (252)	$ 145,673	$ 388,739				$ 534,412
Balance (in shares) at Dec. 31, 2016	40,436,580	19,810,707	79,610,490	(453,066)						39,983,514	19,810,707	79,610,490
Increase (decrease) in stockholder's/members' equity
Share based compensation					8,536			8,536					8,536
Share based compensation (in shares)		(12,721)
Treasury stock purchases					(441)			(441)					(441)
Treasury stock purchases (in shares)		(32,789)
Net income						5,481		5,481	20,006				25,487
Foreign exchange translation adjustment							1,698	1,698	3,939				5,637
Distribution from Virtu Financial to non-controlling interest									(37,076)				(37,076)
Dividends						(20,278)		(20,278)					(20,278)
Issuance of common stock in connection with employee exchanges (in shares)	991,306
Repurchase of Virtu Financial Units and corresponding number of Class C common stock in connection with employee exchanges (in shares)		(991,306)
Issuance of tax receivable agreements in connection with employee exchange					1,204			1,204					1,204
Balance at Jun. 30, 2017			$ 1	$ (8,358)	$ 164,835	$ (16,051)	$ 1,446	$ 141,873	$ 375,608				$ 517,481
Balance (in shares) at Jun. 30, 2017	41,427,886	18,773,891	79,610,490	(453,066)						40,974,820	18,773,891	79,610,490