REDEEMABLE PREFERRED STOCK - Narrative (Details) $ / shares in Units, $ in Thousands						1 Months Ended					2 Months Ended	12 Months Ended			39 Months Ended
	Mar. 31, 2027	Mar. 17, 2026 shares	Sep. 18, 2025 USD ($) shares	May 12, 2025 USD ($) $ / shares shares	Jun. 18, 2024 USD ($) $ / shares shares	Aug. 31, 2025 USD ($) $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Mar. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2023 USD ($) $ / shares shares	Sep. 04, 2025 USD ($) $ / shares shares	Dec. 31, 2025 USD ($) shares	Dec. 31, 2024 USD ($) shares	Dec. 31, 2023 USD ($) shares	Mar. 30, 2027	Jan. 01, 2035	Jan. 01, 2027
Class of Stock [Line Items]
Issuance of redeemable preferred stock, net of issuance cost (in shares) | shares														115,000
Stock issuance costs												$ 11,978	$ 5,962	$ 0
Redeemable preferred stock													2,990
Reclassification of embedded derivative from liability-classified to equity-classified												16,714
Related party
Class of Stock [Line Items]
Sale of stock (in shares) | shares						133,670	1,000	5,900
Sale of stock (in dollars per share) | $ / shares						$ 1,000	$ 1,000	$ 1,000
Gross proceeds						$ 133,700	$ 1,000	$ 5,900
Existing stockholders
Class of Stock [Line Items]
Sale of stock (in shares) | shares						666,665			666,665
Sale of stock (in dollars per share) | $ / shares						$ 30.00			$ 30.00
Gross proceeds						$ 20,000			$ 20,000
Series L
Class of Stock [Line Items]
Issuance of redeemable preferred stock, net of issuance cost (in shares) | shares										115,000
Issuance of redeemable preferred stock (in dollars per share) | $ / shares										$ 1,000
Proceeds from issuance of redeemable preferred stock										$ 115,000		$ 0	$ 0	115,000
Initial fair value										94,000
Capital contribution										$ 21,000
Stock issuance costs				$ 100
Redeemable stock, shares outstanding (in shares) | shares												115,000	115,000
Aggregate Liquidation Preference												$ 115,000	$ 115,000
Preferred stock, redemption price												100.00%
Series L | Madrone Partners, L.P. and affiliates | Related party
Class of Stock [Line Items]
Sale of stock (in shares) | shares										51,111
Sale of stock (in dollars per share) | $ / shares										$ 1,000
Gross proceeds										$ 51,100
Series L | Redeemable Preferred Stock, Period One
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)												0.00%
Series L | Redeemable Preferred Stock, Period Two and Thereafter
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)												5.00%
Series L | Forecast
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)	5.00%														0.00%
Class A | Existing stockholders
Class of Stock [Line Items]
Sale of stock (in shares) | shares										12,500,000
Sale of stock (in dollars per share) | $ / shares										$ 8.80
Class A | Existing stockholders | Madrone Partners, L.P. and affiliates
Class of Stock [Line Items]
Sale of stock (in shares) | shares										5,555,555
Sale of stock (in dollars per share) | $ / shares										$ 8.80
Series M
Class of Stock [Line Items]
Issuance of redeemable preferred stock, net of issuance cost (in shares) | shares					24,025
Issuance of redeemable preferred stock (in dollars per share) | $ / shares					$ 1,000
Proceeds from issuance of redeemable preferred stock					$ 24,000							$ 0	24,025	0
Stock issuance costs					$ 100
Redeemable preferred stock, conversion terms, period after closing of qualified IPO			180 days									180 days
Redeemable stock, shares outstanding (in shares) | shares												24,025
Redeemable preferred stock, fair value												$ 17,894	26,646
Aggregate Liquidation Preference												$ 30,100
Preferred stock dividend rate (as a percent)												15.00%
Preferred stock, redemption price												100.00%
Preferred stock, redemption term												10 years
Series M | Other current liabilities
Class of Stock [Line Items]
Redeemable preferred stock, fair value												$ 17,900
Series M | Other non-current liabilities
Class of Stock [Line Items]
Redeemable preferred stock, fair value													26,600
Series M | Forecast
Class of Stock [Line Items]
Issuance of shares in conversion (in shares) | shares		1,322,527
Series N
Class of Stock [Line Items]
Issuance of redeemable preferred stock, net of issuance cost (in shares) | shares				50,000								50,000
Issuance of redeemable preferred stock (in dollars per share) | $ / shares				$ 1,000
Proceeds from issuance of redeemable preferred stock				$ 50,000								$ 50,000	0	0
Stock issuance costs				100
Redeemable preferred stock, conversion terms, period after closing of qualified IPO			180 days									180 days
Redeemable preferred stock			$ 2,700	$ 200
Reclassification of embedded derivative from liability-classified to equity-classified			$ 2,700
Redeemable stock, shares outstanding (in shares) | shares												50,000
Aggregate Liquidation Preference												$ 55,000
Redeemable preferred stock, liquidation preference per share calculation, return multiplier				1.10
Preferred stock, liquidation preference, threshold ownership percentage												50.00%
Series N | Forecast
Class of Stock [Line Items]
Issuance of shares in conversion (in shares) | shares		2,340,425
Redeemable preferred stock, liquidation preference per share calculation, return multiplier																1.55
Redeemable preferred stock, liquidation preference per share calculation, return multiplier, annual increase																	0.05
Series O
Class of Stock [Line Items]
Issuance of redeemable preferred stock, net of issuance cost (in shares) | shares											254,893	254,893
Issuance of redeemable preferred stock (in dollars per share) | $ / shares											$ 1,000
Proceeds from issuance of redeemable preferred stock											$ 254,900	$ 254,893	$ 0	$ 0
Stock issuance costs											100
Redeemable preferred stock, conversion terms, period after closing of qualified IPO			180 days									180 days
Redeemable preferred stock			$ 14,000								$ 900
Reclassification of embedded derivative from liability-classified to equity-classified			$ 14,000
Redeemable stock, shares authorized (in shares) | shares							500,000
Redeemable stock, shares outstanding (in shares) | shares												254,893
Aggregate Liquidation Preference												$ 280,382
Redeemable preferred stock, liquidation preference per share calculation, return multiplier				1.10
Preferred stock, liquidation preference, threshold ownership percentage												50.00%
Series O | Forecast
Class of Stock [Line Items]
Issuance of shares in conversion (in shares) | shares		11,931,135
Redeemable preferred stock, liquidation preference per share calculation, return multiplier																1.55
Redeemable preferred stock, liquidation preference per share calculation, return multiplier, annual increase																	0.05
Series J
Class of Stock [Line Items]
Issuance of shares in conversion (in shares) | shares			2,044,729
Redeemable stock, shares outstanding (in shares) | shares												0	32,892
Redeemable preferred stock, fair value													$ 43,751
Aggregate Liquidation Preference			$ 48,100
Settlement of accumulated dividends													15,200
Conversion of Series I redeemable preferred stock to Class A common stock (in shares) | shares			32,892
Preferred stock, redemption price												100.00%
Series J | Redeemable Preferred Stock, Period One
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)												0.00%
Series J | Redeemable Preferred Stock, Period Two and Thereafter
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)												15.00%
Series I
Class of Stock [Line Items]
Issuance of shares in conversion (in shares) | shares			1,386,615
Redeemable preferred stock			$ 3,300										$ 3,000
Redeemable stock, shares outstanding (in shares) | shares												10,000	30,000
Aggregate Liquidation Preference			$ 29,300									$ 15,134	$ 40,734
Settlement of accumulated dividends												$ 9,300
Conversion of Series I redeemable preferred stock to Class A common stock (in shares) | shares			20,000									20,000
Preferred stock, redemption price												120.00%
Redeemable preferred stock not convertible (in shares) | shares												10,000
Redeemable preferred stock, conversion ratio			0.9
Carrying Value			$ 20,600
Adjustment to additional paid-in capital for excess over the carrying value on conversion			$ 32,600
Series I | Redeemable Preferred Stock, Period One
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)												6.00%
Series I | Redeemable Preferred Stock, Period Two
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)												9.00%
Series I | Redeemable Preferred Stock, Period Three and Thereafter
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)												11.00%
Series K
Class of Stock [Line Items]
Redeemable stock, shares outstanding (in shares) | shares												365,000	365,000
Aggregate Liquidation Preference												$ 562,067	$ 509,827
Preferred stock dividend rate (as a percent)												9.875%
Preferred stock, cash dividend rate (as a percent)												9.375%
Preferred stock, redemption price												120.00%
Series K | Redeemable Preferred Stock, Period One
Class of Stock [Line Items]
Preferred stock, liquidation preference, applicable premium												105.00%
Series K | Redeemable Preferred Stock, Period Two
Class of Stock [Line Items]
Preferred stock, liquidation preference, applicable premium												103.00%
Series K | Redeemable Preferred Stock, Period Three
Class of Stock [Line Items]
Preferred stock, liquidation preference, applicable premium												101.00%
Series K | Redeemable Preferred Stock, Period Four and Thereafter
Class of Stock [Line Items]
Preferred stock, liquidation preference, applicable premium												100.00%