Net Loss Per Share - Reconciliations of the Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Net loss per share numerator:
Net loss from continuing operations	$ (58,566)	$ (88,439)
Net loss attributable to noncontrolling interests	(284)	(120)
Net loss from continuing operations attributable to NantHealth	(58,282)	(88,319)
Income from discontinued operations, net of tax, attributable to NantHealth	23	31,993
Net loss attributable to NantHealth	$ (58,259)	$ (56,326)
Net loss for basic and diluted net loss per share:
Weighted-average shares for basic net loss per share (in shares)	114,148,604	110,954,858
Effect of dilutive securities (in shares)	0	0
Weighted-average shares for dilutive net loss per share (in shares)	114,148,604	110,954,858
Basic and diluted net loss per share attributable to NantHealth:
Continuing operations - common stock per basic share (in dollars per share)	$ (0.51)	$ (0.80)
Continuing operations - common stock per diluted share (in dollars per share)	(0.51)	(0.80)
Discontinued operations - common stock per basic share (in dollars per share)	0	0.29
Discontinued operations - common stock per diluted share (in dollars per share)	0	0.29
Total net loss per share - common stock, basic (in dollars per share)	(0.51)	(0.51)
Total net loss per share - common stock, diluted (in dollars per share)	$ (0.51)	$ (0.51)