NET INCOME PER SHARE (Details) $ / shares in Units, shares in Thousands, $ in Thousands			3 Months Ended				6 Months Ended
		Jun. 08, 2022	Jun. 30, 2022 USD ($) $ / shares shares		Jun. 30, 2021 USD ($) $ / shares shares		Jun. 30, 2022 USD ($) $ / shares shares		Jun. 30, 2021 USD ($) $ / shares shares
Basic:
Net income attributable to Class A common shareholders	[1]		$ 6,438		$ 0		$ 10,303		$ 0
Net income attributable to Class A common shareholders (in shares) | shares	[1],[2]		39,297		0		38,766		0
Net income attributable to Class A common shareholders (in dollars per share) | $ / shares			$ 0.16		$ 0		$ 0.27		$ 0
Less: Net income available to participating unvested restricted Class A common shareholders(4)			$ (4,184)		$ 0		$ (4,184)		$ 0
Net income attributable to vested Class A common shareholders			$ 2,254		$ 0		$ 6,119		$ 0
Net income attributable to vested Class A common shareholders (in USD per share) | $ / shares	[1]		$ 0.06		$ 0		$ 0.16		$ 0
Effect of dilutive securities:
Unvested Class A common shares			$ 0		$ 0		$ 0		$ 0
Replacement awards (in shares) | shares			32		0		30		0
Replacement awards (in USD per share) | $ / shares			$ 0		$ 0		$ 0		$ 0
Diluted:
Net income attributable to Class A Common Shareholders			$ 2,254		$ 0		$ 6,119		$ 0
Net income (loss) attributable to Class A common shareholders (in shares) | shares	[1],[2]		39,329		0		38,796		0
Net income (loss) attributable to Class A common shareholders (in USD per share) | $ / shares			$ 0.06	[1]	$ 0	[1]	$ 0.16	[1]	$ 0
Common Stock | Class A Common Stock
Equity, Class of Treasury Stock [Line Items]
Stock split, conversion ratio		2

[1] The results of the legacy ALTM business are not included in the Company’s consolidated financials prior to February 22, 2022. Refer to the Form 10-Q basis of presentation in Note 1—Description of the Organization and Summary of Significant Accounting Policies in the Notes to our Condensed Consolidated Financial Statements in this Form 10-Q for further information.

[2] Share amounts have been retroactively restated to reflect the Company’s Stock Split (as defined in Note 10—Equity and Warrants), which was effected on June 8, 2022. Refer to Note 10 – Equity and Warrants in the Notes to our Condensed Consolidated Financial Statements in this Form 10-Q for further information.