CONDENSED CONSOLIDATED AND COMBINED STATEMENTS OF EQUITY (DEFICIT) - USD ($) shares in Thousands, $ in Thousands		Total	Net Parent Investment [Member]	Accumulated Other Comprehensive Loss [Member]		Total Parent's/OneSpaWorld Stockholders' Equity (Deficit) [Member]	Additional Paid-in Capital [Member]	Non-Controlling Interest [Member]	Accumulated Deficit [Member]	Voting Common Stock [Member]	Non-Voting Common Stock [Member]	Voting and Non-Voting Common Stock [Member]
BALANCE at Dec. 31, 2018		$ (127,583)	$ (130,520)	$ (649)		$ (131,169)		$ 3,586
Net (loss) income		(24,781)	(25,459)			(25,459)		678
Distributions to noncontrolling interest		(267)						(267)
Net contributions from the parent and affiliates		351,802	351,802			351,802
Foreign currency translation adjustment		(165)		(165)		(165)
BALANCE at Mar. 19, 2019		199,006	$ 195,823	(814)		195,009		3,997
Net (loss) income		(14,350)
BALANCE at Sep. 30, 2019		646,284		(331)	[1]	638,298	$ 655,335	7,986	$ (16,712)			$ 6
BALANCE (In Shares) at Sep. 30, 2019										61,118
BALANCE at Mar. 20, 2019	[2]	640,469				634,845	634,839	5,624				6
BALANCE (In Shares) at Mar. 20, 2019	[2]									61,118
Net (loss) income		(14,350)				(16,712)		2,362	(16,712)
Stock-based compensation		20,496				20,496	20,496
Foreign currency translation adjustment		(384)		(384)		(384)
Unrecognized gain (loss) on derivatives		53		53		53
BALANCE at Sep. 30, 2019		646,284		(331)	[1]	638,298	655,335	7,986	(16,712)			6
BALANCE (In Shares) at Sep. 30, 2019										61,118
BALANCE at Jun. 30, 2019		642,429		(391)		635,751	655,210	6,678	(19,074)			6
BALANCE (In Shares) at Jun. 30, 2019										61,118
Net (loss) income		3,670				2,362		1,308	2,362
Stock-based compensation		125				125	125
Foreign currency translation adjustment		7		7		7
Unrecognized gain (loss) on derivatives		53		53		53
BALANCE at Sep. 30, 2019		646,284		(331)	[1]	638,298	655,335	7,986	(16,712)			6
BALANCE (In Shares) at Sep. 30, 2019										61,118
BALANCE at Dec. 31, 2019		646,368		719		638,244	653,088	8,124	(15,569)			6
BALANCE (In Shares) at Dec. 31, 2019										61,119
Net (loss) income		(252,516)				(252,516)			(252,516)
Distributions to noncontrolling interest		(4,011)						(4,011)
2020 Private Placement, net of issuance costs		68,602				68,602	68,599					3
2020 Private Placement, net of issuance costs, Shares										6,564	17,186
Stock-based compensation		1,960				1,960	1,960
Foreign currency translation adjustment		(215)		(215)		(215)
Unrecognized gain (loss) on derivatives		(6,291)		(6,291)		(6,291)
Dividends		(2,449)				(2,449)	(2,449)
Purchase of noncontrolling interest		(10,810)				(6,697)	(6,697)	$ (4,113)
Purchase of noncontrolling interest, Shares										99
Purchase of public warrants		(879)				(879)	(879)
BALANCE at Sep. 30, 2020		439,759		(5,787)		439,759	713,622		(268,085)			9
BALANCE (In Shares) at Sep. 30, 2020										67,782	17,186
BALANCE at Jun. 30, 2020		460,614		(6,269)		460,614	712,512		(245,638)			9
BALANCE (In Shares) at Jun. 30, 2020										67,782	17,186
Net (loss) income		(22,447)				(22,447)			(22,447)
Stock-based compensation		1,110				1,110	1,110
Foreign currency translation adjustment		89		89		89
Unrecognized gain (loss) on derivatives		393		393		393
BALANCE at Sep. 30, 2020		$ 439,759		$ (5,787)		$ 439,759	$ 713,622		$ (268,085)			$ 9
BALANCE (In Shares) at Sep. 30, 2020										67,782	17,186

[1] For the period from January 1, 2019 to March 19, 2019 (Predecessor), the only component of other comprehensive income (loss) was foreign currency translation adjustments.

[2] Initial equity balances of the Successor reflect the equity of the accounting acquirer, Haymaker, and the issuance of common stock, warrants and cash contributed by Haymaker in connection with the acquisition of OSW Predecessor