Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Cumulative effect adjustment for ASU 2014-09 adoption (Note 4)	$ 40,813					$ 40,813
Beginning balance (in shares) at Mar. 31, 2018		56,213		260
Beginning balance at Mar. 31, 2018	215,104	$ 56	$ 521,119	$ (263)	$ (324)	(305,484)
Issuance of common stock upon exercise of stock options (in shares)		324
Issuance of common stock upon exercise of stock options	5,819	$ 1	5,818
Issuance of common stock for vested restricted stock units (in shares)		221
Issuance of common stock for vested restricted stock units	0
Stock-based compensation expense	11,219		11,219
Other comprehensive income, net	54				54
Net loss attributable to New Relic	(5,615)					(5,615)
Equity component of convertible senior notes, net of issuance costs	100,136		100,136
Purchase of capped calls	(63,182)		(63,182)
Ending balance (in shares) at Jun. 30, 2018		56,758		260
Ending balance at Jun. 30, 2018	304,348	$ 57	575,110	$ (263)	(270)	(270,286)
Beginning balance (in shares) at Mar. 31, 2019		58,366		260
Beginning balance at Mar. 31, 2019	$ 349,630	$ 58	654,759	$ (263)	645	(305,569)
Issuance of common stock upon exercise of stock options (in shares)	84	84
Issuance of common stock upon exercise of stock options	$ 2,271		2,271
Issuance of common stock for vested restricted stock units (in shares)		205
Issuance of common stock for vested restricted stock units	0
Stock-based compensation expense	21,503		21,503
Other comprehensive income, net	1,496				1,496
Net loss attributable to New Relic	(15,169)					(15,169)
Ending balance (in shares) at Jun. 30, 2019		58,655		260
Ending balance at Jun. 30, 2019	$ 359,731	$ 58	$ 678,533	$ (263)	$ 2,141	$ (320,738)