DEBT - Cumulative Effect (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Jan. 01, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Liabilities
Long-term debt and finance lease obligations	$ 4,656		$ 4,656			$ 407,018	$ 405,191
Equity:
Additional paid-in capital	445,210		445,210			439,173	444,824
Adjustment to stockholders' equity	549	$ 167,905	549	$ 167,905	$ 27,070		51,867	$ 182,860	$ 214,603
Retained Earnings (Accumulated Deficit)	$ (425,774)		$ (425,774)			$ (371,760)	(375,584)
Basic (in dollars per share)	$ (0.50)	$ (0.57)	$ (1.34)	$ (1.68)
Diluted (in dollars per share)	$ (0.50)	$ (0.57)	$ (1.34)	$ (1.68)
Additional Paid-in Capital
Equity:
Adjustment to stockholders' equity	$ 445,210	$ 426,924	$ 445,210	$ 426,924	444,747		444,824	424,812	422,589
Retained Earnings (Deficit)
Equity:
Adjustment to stockholders' equity	$ (425,774)	$ (241,349)	(425,774)	$ (241,349)	$ (404,222)		(375,584)	$ (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			$ 600
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