RELATED-PARTY TRANSACTIONS - Narrative (Details) - Special Committee Investigation Indemnification - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Executive Officers and Directors
Related Party Transaction [Line Items]
Expenses from transactions with related parties	$ 120		$ 120
Former President And Chief Executive Officer
Related Party Transaction [Line Items]
Expenses from transactions with related parties		$ 4,700		$ 6,900
Former Interim Chief Financial Officer and Chief Strategy Officer
Related Party Transaction [Line Items]
Expenses from transactions with related parties		186		741
Former Director
Related Party Transaction [Line Items]
Expenses from transactions with related parties		$ 139		142
Former General Counsel
Related Party Transaction [Line Items]
Expenses from transactions with related parties				$ 149