SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Mar. 19, 2019	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020
Summary Of Significant Accounting Policies [Line Items]
Inventory reserve recorded due to COVID-19 pandemic	$ 600	$ 500
Decrease in net cash provided by (used in) financing activities				$ (4,529)		$ 700,641	$ 57,457
Increase in net cash (used in) provided by operating activities				3,733		(8,016)	(20,108)
Increase in other current liabilities				$ (288)		$ 206	$ (287)
Correction of Immaterial Error [Member]
Summary Of Significant Accounting Policies [Line Items]
Decrease in net cash provided by (used in) financing activities			$ (2,400)		$ (2,400)
Increase in net cash (used in) provided by operating activities			2,400		2,400
Increase in other current liabilities			$ 2,400		$ 2,400
Error corrections and prior period adjustments, description							In connection with our preparation of the condensed consolidated financial statements for the third quarter of 2020, the Company determined that the dividend declared on common stock in November 2019 and paid in February 2020 was originally presented within the change in other current liabilities in the operating activities section of the unaudited consolidated statement of cash flows for the three and six-month periods ended March 31, 2020 and June 30, 2020, but should have been classified as cash outflow within financing activities. The effect of correcting such classification error for the respective periods, resulted in a $2.4 million decrease in net cash provided by (used in) financing activities and a $2.4 million increase in net cash (used in) provided by operating activities (specifically, to increase by $2.4 million the change in other current liabilities)
Accounting Standards Update (ASU) 2017-04 [Member]
Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adoption date	Jan. 01, 2020						Jan. 01, 2020
Change in accounting principle, accounting standards update, adopted [true false]	true						true
Owner Of One Spa World Medi spa Bahamas Limited [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	100.00%						100.00%