CAPITAL STRUCTURE (Details) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Jul. 22, 2020	Sep. 30, 2020	Sep. 30, 2019	Jun. 03, 2020	Dec. 31, 2019
Class of Warrant or Right [Line Items]
Common stock and preferred stock, shares authorized (in shares)		750,000,000		750,000,000
Common stock, shares authorized (in shares)		600,000,000		600,000,000	600,000,000
Preferred stock, shares authorized (in shares)		150,000,000		150,000,000	150,000,000
Common stock issued (in shares)	22,877,806
Proceeds from issuance of common stock	$ 263,100	$ 50,349	$ 65,000
Outstanding warrants
Class of Warrant or Right [Line Items]
Number of shares called by each warrant (in shares)		1
Warrant exercise price per share (in dollars per share)		$ 11.50
Warrant period following business combination		30 days
Public Warrant
Class of Warrant or Right [Line Items]
Redemption price threshold (in usd per share)		$ 122,194
Warrant redemption price per share (in dollars per share)	$ 0.01
Private Warrant
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares)		890,000