STOCKHOLDERS' DEFICIT - Narrative (Details) $ in Thousands		3 Months Ended		16 Months Ended	24 Months Ended
	Jan. 24, 2025 USD ($)	Mar. 31, 2026 USD ($) vote shares	Mar. 31, 2025 USD ($) shares	May 08, 2026 USD ($) shares	Dec. 31, 2025 shares
Class of Warrant or Right [Line Items]
Common stock, outstanding (in shares)		16,229,150			15,801,997
Common stock, issued (in shares)		16,229,150			15,801,997
Warrants issued (in shares)		0
Gain on settlement of related party liability | $		$ (37)	$ 0
Debt Exchange Agreements
Class of Warrant or Right [Line Items]
Issuance of stock (in shares)					1,934,889
Total cumulative shares, maximum percentage allowed for issue	19.99%
Debt Exchange Agreements | Atlas Holdings LLC
Class of Warrant or Right [Line Items]
Letters of credit outstanding | $	$ 8,600
Senior Notes | Debt Exchange Agreements
Class of Warrant or Right [Line Items]
Issuance of stock (in shares)			643,456
Stock issued during period, value, debt modification amendment fee | $			$ 800
Debt exchanged | $			$ 1,800
Letter of Credit | Debt Exchange Agreements
Class of Warrant or Right [Line Items]
Interest Rate	8.50%
Common Class A
Class of Warrant or Right [Line Items]
Number of votes per share | vote		1
Common stock, outstanding (in shares)		13,495,756
Common stock, issued (in shares)		13,495,756
Common Class A | Debt Exchange Agreements
Class of Warrant or Right [Line Items]
Stock issued during period, value, debt modification amendment fee | $		$ 100
Issuance of shares in connection with Equity Interest Payment Agreement (in shares)		79,320
Common Class A | Debt Exchange Agreements | Subsequent Event
Class of Warrant or Right [Line Items]
Stock issued during period, value, debt modification amendment fee | $				$ 1,800
Issuance of shares in connection with Equity Interest Payment Agreement (in shares)				1,272,104
Common Class B
Class of Warrant or Right [Line Items]
Number of votes per share | vote		10
Common stock, outstanding (in shares)		2,733,394
Common stock, issued (in shares)		2,733,394
Common stock, convertible, conversion ratio		1