DEBT - Cumulative Effect (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Mar. 31, 2022	Jan. 01, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Liabilities
Long-term debt and finance lease obligations							$ 407,018	$ 405,191
Equity:
Additional paid-in capital	$ 445,839		$ 445,839				439,173	444,824
Adjustment to stockholders' equity	(28,730)	$ 75,437	(28,730)	$ 75,437	$ 549	$ 27,070		51,867	$ 167,905	$ 182,860	$ 214,603
Retained Earnings (Accumulated Deficit)	$ (448,647)		$ (448,647)				$ (371,760)	(375,584)
Basic (in dollars per share)	$ (0.53)	$ (2.94)	$ (1.86)	$ (4.62)
Diluted (in dollars per share)	$ (0.53)	$ (2.94)	$ (1.86)	$ (4.62)
Additional Paid-in Capital
Equity:
Adjustment to stockholders' equity	$ 445,839	$ 428,031	$ 445,839	$ 428,031	445,210	444,747		444,824	426,924	424,812	422,589
Retained Earnings (Deficit)
Equity:
Adjustment to stockholders' equity	$ (448,647)	$ (332,531)	(448,647)	$ (332,531)	$ (425,774)	$ (404,222)		(375,584)	$ (241,349)	$ (223,856)	$ (189,565)
Cumulative Effect, Period of Adoption, Adjustment
Liabilities
Long-term debt and finance lease obligations								1,827
Equity:
Adjustment to stockholders' equity								(1,827)
Interest expense			$ 800
Basic (in dollars per share)			$ (0.01)
Diluted (in dollars per share)			$ (0.01)
Cumulative Effect, Period of Adoption, Adjustment | Additional Paid-in Capital
Equity:
Adjustment to stockholders' equity								(5,651)
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings (Deficit)
Equity:
Adjustment to stockholders' equity								$ 3,824