SUBSEQUENT EVENTS (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2020 USD ($) agreement shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($)
Subsequent Event [Line Items]
Repayments of Second Lien Notes		$ 227,470	$ 0	$ 0
Preferred stock, shares issued (in shares) | shares		1,500,000	0
Subsequent Event
Subsequent Event [Line Items]
Number Of Security Purchase And Sale Agreements | agreement	4
Converted debt amount	$ 76,700
Repayments of Second Lien Notes	$ 2,500
Preferred stock, shares issued (in shares) | shares	794,702
Liquidation preference	$ 79,500