Earnings Per Share - Diluted (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares
Diluted earnings per share
Net income available for common stockholders | $	$ 20,887
Weighted average shares of common stock outstanding
Issued and outstanding	34,964,312
Weighted average number of shares of common stock outstanding	35,339,585
Diluted Earnings per share | $ / shares	$ 0.59
Class A
Weighted average shares of common stock outstanding
Issued and outstanding	34,964,312
Virtu Financial, Inc.
Diluted earnings per share
Net income available for common stockholders | $	$ 20,887
2015 Management Incentive Plan | Class A
Weighted average shares of common stock outstanding
Issuable pursuant to 2015 Management Incentive Plan	375,273