Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total Virtusa Stockholders' Equity	Common Stock	Treasury Stock	Additional Paid In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Non-controlling interest	Redeemable Noncontrolling Interest	Total
Balance at Mar. 31, 2018	$ 418,623	$ 325	$ (39,652)	$ 260,612	$ 238,019	$ (40,681)	$ 17,460		$ 436,083
Balance (in shares) at Mar. 31, 2018		32,469,092	(2,879,999)
Increase (Decrease) in Stockholders' Equity
Proceeds from the exercise of stock options	294			294					294
Proceeds from the exercise of stock options (in shares)		33,173
Proceeds from the exercise of subsidiary stock options	196			196					196
Restricted stock awards vested		$ 1		(1)
Restricted stock awards vested (in shares)		95,432
Restricted stock awards withheld for tax	(2,450)			(2,450)					(2,450)
Share-based compensation	7,908			7,908					7,908
Subsidiary share-based compensation	30			30					30
Cumulative effect of adopting ASC Topic 606, net of tax	464				464				464
Series A Convertible Preferred Stock dividends and accretion	(1,087)				(1,087)				(1,087)
Other comprehensive income (loss)	(13,060)
Other comprehensive income (loss)						(13,060)	(1,466)		(14,526)
Net income (loss)	(6,296)				(6,296)
Net income							731
Net income (loss)									(5,565)
Balance at Jun. 30, 2018	404,622	$ 326	$ (39,652)	266,589	231,100	(53,741)	16,725		421,347
Balance (in shares) at Jun. 30, 2018		32,597,697	(2,879,999)
Balance at Mar. 31, 2018	418,623	$ 325	$ (39,652)	260,612	238,019	(40,681)	17,460		436,083
Balance (in shares) at Mar. 31, 2018		32,469,092	(2,879,999)
Increase (Decrease) in Stockholders' Equity
Purchase of redeemable noncontrolling interest related to Polaris									28,396
Net income (loss)									(4,791)
Net income									(1,186)
Balance at Sep. 30, 2018	359,156	$ 328	$ (39,652)	231,196	231,517	(64,233)	275	$ 24,614	359,431
Balance (in shares) at Sep. 30, 2018		32,769,705	(2,879,999)
Balance at Jun. 30, 2018	404,622	$ 326	$ (39,652)	266,589	231,100	(53,741)	16,725		421,347
Balance (in shares) at Jun. 30, 2018		32,597,697	(2,879,999)
Increase (Decrease) in Stockholders' Equity
Proceeds from the exercise of stock options	134			134					134
Proceeds from the exercise of stock options (in shares)		9,918
Proceeds from the exercise of subsidiary stock options	64			64					64
Restricted stock awards vested		$ 2		(2)				3
Restricted stock awards vested (in shares)		162,090
Restricted stock awards withheld for tax	(5,152)			(5,152)					(5,152)
Share-based compensation	8,022			8,022					8,022
Reclassification of previously recognized stock compensation related to liabilities classified awards for Polaris to liabilities	(617)			(617)					(617)
Adjustments of redeemable noncontrolling interest to redemption value	(37,842)			(37,842)			(16,450)	54,850	(54,292)
Purchase of redeemable noncontrolling interest related to Polaris								(28,395)
Foreign currency translation on redeemable noncontrolling interest								(2,045)
Series A Convertible Preferred Stock dividends and accretion	(1,088)				(1,088)				(1,088)
Other comprehensive income (loss)	(10,492)					(10,492)			(10,492)
Other comprehensive income (loss)								(255)
Net income (loss)	1,505				1,505				1,505
Net income								456	(455)
Balance at Sep. 30, 2018	359,156	$ 328	$ (39,652)	231,196	231,517	(64,233)	275	24,614	359,431
Balance (in shares) at Sep. 30, 2018		32,769,705	(2,879,999)
Balance at Mar. 31, 2019	390,774	$ 330	$ (39,652)	239,204	250,279	(59,387)		23,576	$ 390,774
Balance (in shares) at Mar. 31, 2019		33,012,775	(2,879,999)						30,132,776
Increase (Decrease) in Stockholders' Equity
Proceeds from the exercise of stock options	194			194				8	$ 194
Proceeds from the exercise of stock options (in shares)		13,416
Restricted stock awards vested		$ 1		(1)
Restricted stock awards vested (in shares)		96,763
Restricted stock awards withheld for tax	(2,011)			(2,011)					(2,011)
Share-based compensation	6,674			6,674					6,674
Adjustments of redeemable noncontrolling interest to redemption value	18			18				170	18
Purchase of redeemable noncontrolling interest related to Polaris								(5,549)
Foreign currency translation on redeemable noncontrolling interest								116
Series A Convertible Preferred Stock dividends and accretion	(1,087)				(1,087)				(1,087)
Other comprehensive income (loss)	(1,194)					(1,194)
Other comprehensive income (loss)								144	(1,194)
Net income (loss)	5,834				5,834				5,834
Net income								186
Balance at Jun. 30, 2019	399,202	$ 331	$ (39,652)	244,078	255,026	(60,581)		18,651	399,202
Balance (in shares) at Jun. 30, 2019		33,122,954	(2,879,999)
Balance at Mar. 31, 2019	390,774	$ 330	$ (39,652)	239,204	250,279	(59,387)		23,576	$ 390,774
Balance (in shares) at Mar. 31, 2019		33,012,775	(2,879,999)						30,132,776
Increase (Decrease) in Stockholders' Equity
Repurchase of common stock (in shares)									(505,565)
Purchase of redeemable noncontrolling interest related to Polaris									$ 8,675
Net income (loss)									12,936
Net income									(332)
Balance at Sep. 30, 2019	382,269	$ 332	$ (58,332)	248,284	261,040	(69,055)	15,128		$ 397,397
Balance (in shares) at Sep. 30, 2019		33,224,132	(3,385,564)						29,838,568
Balance at Jun. 30, 2019	399,202	$ 331	$ (39,652)	244,078	255,026	(60,581)		18,651	$ 399,202
Balance (in shares) at Jun. 30, 2019		33,122,954	(2,879,999)
Increase (Decrease) in Stockholders' Equity
Restricted stock awards vested		$ 1		(1)
Restricted stock awards vested (in shares)		101,178
Restricted stock awards withheld for tax	(1,647)			(1,647)					(1,647)
Share-based compensation	5,829			5,829					5,829
Repurchase of common stock	(18,680)		$ (18,680)						(18,680)
Repurchase of common stock (in shares)			(505,565)
Adjustments of redeemable noncontrolling interest to redemption value	25			25				101	25
Purchase of redeemable noncontrolling interest related to Polaris								(3,126)
Foreign currency translation on redeemable noncontrolling interest								(533)
Reclassification of noncontrolling interest from temporary equity to permanent equity							15,093	$ (15,093)	15,093
Series A Convertible Preferred Stock dividends and accretion	(1,088)				(1,088)				(1,088)
Other comprehensive income (loss)	(8,474)					(8,474)
Other comprehensive income (loss)							(111)		(8,585)
Net income (loss)	7,102				7,102		146		7,102
Net income									(146)
Net income (loss)									7,248
Balance at Sep. 30, 2019	$ 382,269	$ 332	$ (58,332)	$ 248,284	$ 261,040	$ (69,055)	$ 15,128		$ 397,397
Balance (in shares) at Sep. 30, 2019		33,224,132	(3,385,564)						29,838,568