Condensed Consolidated Statements of Changes in Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Common Stock Common Class A	Common Stock Common Class B	Additional Paid in Capital	Warrants	Accumulated Deficit	Noncontrolling Interest	Accumulated Other Comprehensive Income (Loss)	SDC Financial, LLC	SDC Financial, LLC Additional Paid in Capital	SDC Financial, LLC Warrants	SDC Financial, LLC Accumulated Deficit
Members' units, beginning balance (in shares) at Dec. 31, 2018										108,878	369
Members' equity, beginning balance at Dec. 31, 2018									$ (90,437)	$ 57,677	$ 315	$ (148,429)
Increase (Decrease) in Members' Equity [Roll Forward]
Net income prior to Reorganization Transactions, Net (loss) subsequent to Reorganization Transactions	$ (440,479)								(104,245)			(104,245)
Preferred Unit redemption accretion									(58,507)	$ (58,507)
Redemptions prior to Reorganization Transactions (in shares)										(20,710)
Redemptions prior to Reorganization Transactions									(54,154)	$ (54,154)
Share-based compensation prior to Reorganization Transactions									8,561	8,561
Distributions payable									(43,400)	$ (43,400)
Effect of Reorganization Transactions (in shares)										(88,168)	(369)
Effect of Reorganization Transactions									342,182	$ 89,823	$ (315)	252,674
Members' units, ending balance (in shares) at Sep. 30, 2019										0	0
Members' equity, ending balance at Sep. 30, 2019									0	$ 0	$ 0	0
Beginning balance, temporary equity at Dec. 31, 2018									388,634
Increase (Decrease) in Temporary Equity [Roll Forward]
Preferred Unit redemption accretion									58,507
Effect of Reorganization Transactions									(447,141)
Ending balance, temporary equity at Sep. 30, 2019									0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation adjustment	0
Ending balance (in shares) at Sep. 30, 2019		102,807,291	279,474,505
Ending balance at Sep. 30, 2019	550,610	$ 10	$ 28	$ 441,855	$ 0	$ (88,296)	$ 197,013	$ 0
Members' units, beginning balance (in shares) at Jun. 30, 2019										88,168	369
Members' equity, beginning balance at Jun. 30, 2019									(226,005)	$ (24,976)	$ 315	(201,344)
Increase (Decrease) in Members' Equity [Roll Forward]
Net income prior to Reorganization Transactions, Net (loss) subsequent to Reorganization Transactions	(387,564)								(51,330)			(51,330)
Preferred Unit redemption accretion (in shares)										(20,710)
Preferred Unit redemption accretion									(21,746)	$ (21,746)
Share-based compensation prior to Reorganization Transactions									299	299
Distributions payable									(43,400)	$ (43,400)
Effect of Reorganization Transactions (in shares)										(88,168)	(369)
Effect of Reorganization Transactions									342,182	$ 89,823	$ (315)	252,674
Members' units, ending balance (in shares) at Sep. 30, 2019										0	0
Members' equity, ending balance at Sep. 30, 2019									0	$ 0	$ 0	0
Beginning balance, temporary equity at Jun. 30, 2019									425,395
Increase (Decrease) in Temporary Equity [Roll Forward]
Preferred Unit redemption accretion									21,746
Effect of Reorganization Transactions									(447,141)
Ending balance, temporary equity at Sep. 30, 2019									0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation adjustment	0
Ending balance (in shares) at Sep. 30, 2019		102,807,291	279,474,505
Ending balance at Sep. 30, 2019	550,610	$ 10	$ 28	441,855	0	(88,296)	197,013	0
Increase (Decrease) in Members' Equity [Roll Forward]
Net income prior to Reorganization Transactions, Net (loss) subsequent to Reorganization Transactions	(336,234)					(88,296)	(247,938)
Members' units, ending balance (in shares) at Sep. 30, 2019										0	0
Members' equity, ending balance at Sep. 30, 2019									0	$ 0	$ 0	$ 0
Ending balance, temporary equity at Sep. 30, 2019									$ 0
Beginning balance (in shares) at Sep. 16, 2019		0	0
Beginning balance at Sep. 16, 2019	0	$ 0	$ 0	0	0	0	0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of Reorganization Transactions (in shares)		70,238,188	279,474,505
Effect of Reorganization Transactions	104,959	$ 7	$ 28	104,609			315
Issuance of Class A common stock in IPO, net of costs (in shares)		58,537,000
Issuance of Class A common stock in IPO, net of costs	1,278,853	$ 5		1,278,848
Repurchases of Class A shares and LLC Units from Pre-IPO investors (in shares)		(31,621,975)
Repurchases of Class A shares and LLC Units from Pre-IPO investors	(696,489)	$ (3)		(696,486)
Issuance of Class A shares in connection with IBA vesting (in shares)		5,654,078
Issuance of Class A shares in connection with IBA vesting	0	$ 1		(1)
Initial effect of the Reorganization Transactions and IPO on noncontrolling interests	0			(444,636)			444,636
Equity-based compensation	283,124			283,124
Equity-based payments	(83,603)			(83,603)
Ending balance (in shares) at Sep. 30, 2019		102,807,291	279,474,505
Ending balance at Sep. 30, 2019	550,610	$ 10	$ 28	441,855	0	(88,296)	197,013	0
Increase (Decrease) in Members' Equity [Roll Forward]
Net income prior to Reorganization Transactions, Net (loss) subsequent to Reorganization Transactions	(245,548)					(68,639)	(176,909)
Beginning balance (in shares) at Dec. 31, 2019		103,303,674	279,474,505
Beginning balance at Dec. 31, 2019	458,285	$ 10	$ 28	447,866	0	(114,513)	125,166	(272)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A shares in connection with RSU vesting (in shares)		1,655,618
Issuance of Class A shares in connection with RSU vesting	0
Issuance of Class B shares in connection with warrant exercise (in shares)			1,459,386
Issuance of Class B shares in connection with warrant exercise	922			(15)			937
Exchange of Class B common stock for Class A common stock (in shares)		8,146,488	(8,146,488)
Exchange of Class B common stock for Class A common stock	0	$ 1	$ (1)	740			(740)
HPS Warrant issuance	17,620				17,620
Equity-based compensation	38,189			38,189
Equity-based payments	(6,976)			(6,976)
Foreign currency translation adjustment	1,211						880	331
Other	(385)			(385)
Ending balance (in shares) at Sep. 30, 2020		113,105,780	272,787,403
Ending balance at Sep. 30, 2020	263,318	$ 11	$ 27	479,419	17,620	(183,152)	(50,666)	59
Increase (Decrease) in Members' Equity [Roll Forward]
Net income prior to Reorganization Transactions, Net (loss) subsequent to Reorganization Transactions	(43,482)					(12,590)	(30,892)
Beginning balance (in shares) at Jun. 30, 2020		110,123,999	275,376,789
Beginning balance at Jun. 30, 2020	297,924	$ 11	$ 27	470,838	17,620	(170,562)	(20,052)	42
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A shares in connection with RSU vesting (in shares)		392,395
Issuance of Class A shares in connection with RSU vesting	0
Exchange of Class B common stock for Class A common stock (in shares)		2,589,386	(2,589,386)
Exchange of Class B common stock for Class A common stock	0	$ 0	$ 0	(233)			233
Equity-based compensation	10,972			10,972
Equity-based payments	(2,447)			(2,447)
Foreign currency translation adjustment	62						45	17
Other	289			289
Ending balance (in shares) at Sep. 30, 2020		113,105,780	272,787,403
Ending balance at Sep. 30, 2020	$ 263,318	$ 11	$ 27	$ 479,419	$ 17,620	$ (183,152)	$ (50,666)	$ 59