RELATED-PARTY TRANSACTIONS - Narrative (Details) - Special Committee Investigation Indemnification - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Executive Officers and Directors
Related Party Transaction [Line Items]
Expenses from transactions with related parties		$ 120		$ 120
Former Chair, President And Chief Executive Officer
Related Party Transaction [Line Items]
Expenses from transactions with related parties		3,500	$ 198	10,500
Former Interim Chief Financial Officer and Chief Strategy Officer
Related Party Transaction [Line Items]
Expenses from transactions with related parties	$ 298		$ 302	769
Former Director
Related Party Transaction [Line Items]
Expenses from transactions with related parties				180
Former General Counsel
Related Party Transaction [Line Items]
Expenses from transactions with related parties		$ 497		$ 646