Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Consolidated net loss	$ (12,421)	$ (10,392)	$ (24,575)	$ (17,547)
Other comprehensive loss:
Change in unrealized loss on available-for-sale investments, net of tax	(51)	(4)	(547)	(18)
Comprehensive loss	(12,472)	(10,396)	(25,122)	(17,565)
Comprehensive loss attributable to noncontrolling interest in Pangu BioPharma Limited	1	1	2	5
Comprehensive loss attributable to aTyr Pharma, Inc. common stockholders	$ (12,471)	$ (10,395)	$ (25,120)	$ (17,560)