COMMON STOCK (Details) $ / shares in Units, $ in Thousands					1 Months Ended	3 Months Ended		6 Months Ended	12 Months Ended
	Jul. 28, 2023 USD ($)	Feb. 14, 2023 USD ($)	Aug. 16, 2022 USD ($) Rate shares	Apr. 26, 2022 votePerShare $ / shares shares	Mar. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2023 USD ($) shares	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) $ / shares shares	Jan. 20, 2023 $ / shares
Class of Stock
Common stock and preferred stock, shares authorized (in shares) | shares				500,000,000
Preferred stock, shares authorized (in shares) | shares				1,000,000	1,000,000	1,000,000			1,000,000
Preferred stock par value (in dollars per share) | $ / shares				$ 0.0001	$ 0.0001	$ 0.0001			$ 0.0001
Loss on change in fair value of ELOC program						$ 0	$ (571)	$ (1,901)
Proceeds from sale of stock under the ELOC Program						0	28,683	$ 71,455
Proceeds from the issuance of Class A common stock upon exercise of options						8,887	2,425
Payment of financing costs associated with the Sales Agreement						$ 3,435	0
CFPI
Class of Stock
Loss on change in fair value of ELOC program							(600)
Costs and fees incurred							$ 200
Initial fair value of derivative liability			$ 1,100
Aggregate shares (in shares) | shares									25,000,000
Proceeds from sale of stock under the ELOC Program									$ 71,700
CFPI | Minimum
Class of Stock
Stock price per share (in dollars per share) | $ / shares									$ 1.75
CFPI | Maximum
Class of Stock
Stock price per share (in dollars per share) | $ / shares									$ 4.26
Sales Agreement Issuance | Common Stock
Class of Stock
Stock price per share (in dollars per share) | $ / shares					$ 3.62	$ 3.62
PIPE financing (in shares) | shares						37,907,219
Proceeds from the issuance of Class A common stock upon exercise of options						$ 137,300
Payment of financing costs associated with the Sales Agreement						$ 3,400
Class A Common Stock
Class of Stock
Common stock, shares authorized (in shares) | shares				455,000,000	455,000,000	455,000,000			455,000,000
Common stock par value (in dollars per share) | $ / shares				$ 0.0001	$ 0.0001	$ 0.0001			$ 0.0001
Converted into shares of common stock (in shares) | shares					2,269,982
Number of votes per share | votePerShare				1
Class A Common Stock | CFPI
Class of Stock
Common stock, shares authorized (in shares) | shares			25,000,000
Purchase price as a percentage of the volume-weighted average price (percent) | Rate			97.00%
Shares issued as consideration (in shares) | shares			250,000
Costs and fees incurred		$ 300
Class A Common Stock | Equity Line Of Credit Program | Common Stock
Class of Stock
PIPE financing (in shares) | shares							10,948,552
Class A Common Stock | Common Stock Sales Agreement
Class of Stock
Aggregate proceeds from sale of stock	$ 150,000
Fixed commission rate (percent)	0.025
Sales agent specified expenses	$ 75
Stock authorized to be offered and sold					$ 133,800	$ 133,800
Class A Common Stock | Sales Agreement Issuance | Common Stock
Class of Stock
PIPE financing (in shares) | shares						37,907,219
Class B Common Stock
Class of Stock
Common stock, shares authorized (in shares) | shares				44,000,000	44,000,000	44,000,000			44,000,000
Common stock par value (in dollars per share) | $ / shares				$ 0.0001	$ 0.0001	$ 0.0001			$ 0.0001
Number of votes per share | votePerShare				10
Common stock conversion ratio					1	1
Common Stock
Class of Stock
Converted shares (in shares) | shares						4,750,000
Series A Preferred Stock
Class of Stock
Stock price per share (in dollars per share) | $ / shares										$ 30.00