Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net loss attributable to New Relic	$ (29,756)	$ (15,169)
Other comprehensive income (loss):
Unrealized gain (loss) on available-for-sale securities, net of tax	(759)	1,496
Comprehensive loss	$ (30,515)	$ (13,673)