Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Other Comprehensive Income [Abstract]
Net loss	$ (43,482)	$ (387,564)	$ (245,548)	$ (440,479)
Other comprehensive loss:
Foreign currency translation adjustment	62	0	1,211	0
Comprehensive loss	(43,420)	(387,564)	(244,337)	(440,479)
Comprehensive loss attributable to noncontrolling interests	(30,847)	0	(176,029)	0
Comprehensive loss attributable to SmileDirectClub, Inc.	$ (12,573)	$ (387,564)	$ (68,308)	$ (440,479)