LONG-TERM DEBT - Cumulative Effect (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Jan. 01, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Liabilities
Total long-term debt and finance lease obligations, less current portion	$ 407,018	$ 455,815		$ 405,191
Equity:
Adjustment to stockholders' equity		27,070	$ 182,860	51,867	$ 214,603
Additional paid-in capital	439,173	444,747		444,824
Accumulated deficit	(371,760)	$ (404,222)		(375,584)
Basic (in dollars per share)		$ (0.86)	$ (1.11)
Diluted (in dollars per share)		$ (0.86)	$ (1.11)
Additional Paid-in Capital
Equity:
Adjustment to stockholders' equity		$ 444,747	$ 424,812	444,824	422,589
Retained Earnings (Deficit)
Equity:
Adjustment to stockholders' equity		$ (404,222)	$ (223,856)	(375,584)	$ (189,565)
Cumulative Effect, Period of Adoption, Adjustment
Liabilities
Total long-term debt and finance lease obligations, less current portion				1,827
Equity:
Adjustment to stockholders' equity				(1,827)
Interest expense	$ 300
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