CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash Flows from Operating Activities:
Net loss	$ (112,332,000)	$ (65,628,000)	$ (25,198,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	13,416,000	13,595,000	10,294,000
Impairment losses	0	3,594,000	0
Stock-based compensation	18,916,000	3,761,000	2,707,000
Amortization of operating lease right-of-use assets	2,976,000	2,782,000	2,635,000
Loss on debt extinguishment	7,804,000	9,392,000	1,287,000
Amortization of debt issuance costs and other non-cash interest expense	3,038,000	5,667,000	4,139,000
Reduction in fair value of earnout	0	(5,659,000)	(3,874,000)
Deferred taxes	(478,000)	(2,614,000)	(645,000)
Non-cash services acquired	13,752,000	12,669,000	0
Other	667,000	(160,000)	254,000
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	(5,156,000)	(4,432,000)	526,000
Prepaid expenses and other current assets	(4,943,000)	101,000	(261,000)
Contract assets	(556,000)	(1,485,000)	(1,986,000)
Inventories	(341,000)	1,576,000	1,487,000
Other assets	(4,228,000)	(5,432,000)	(560,000)
Accounts payable	4,073,000	(6,070,000)	(1,559,000)
Contract liabilities	(6,657,000)	7,408,000	(5,754,000)
Accrued expenses	12,084,000	8,554,000	3,294,000
Operating lease liabilities	(2,766,000)	(2,829,000)	(2,170,000)
Other liabilities	(212,000)	(292,000)	3,000
Net cash used in operating activities	(60,943,000)	(25,502,000)	(15,381,000)
Cash Flows from Investing Activities:
Purchases of property and equipment	(144,673,000)	(82,703,000)	(17,210,000)
Grant funding for property and equipment	50,400,000	54,930,000	26,858,000
Acquisitions, net of cash acquired	(151,834,000)	0	2,050,000
Purchase of investments	(15,500,000)	0	(100,000)
Net cash (used in) provided by investing activities	(261,607,000)	(27,773,000)	11,598,000
Cash Flows from Financing Activities:
Proceeds from Term Loan, net	0	57,922,000	47,100,000
Repayment of Term Loan	(64,420,000)	(56,574,000)	(35,275,000)
Borrowings from the credit facility	64,500,000	0	0
Repayments on the credit facility	(64,500,000)	0	0
Proceeds from the issuance of Common stock, net	45,886,000	0	0
Proceeds from the issuance of Class B convertible preferred stock, net	0	0	3,128,000
Proceeds from the issuance of Class C preferred stock, net	116,047,000	66,598,000	0
Proceeds from the issuance of Class A common stock upon IPO, net of underwriting costs	409,406,000	0	0
Costs associated with initial public offering	(8,550,000)	0	0
Sale of noncontrolling interest	81,720,000	13,425,000	0
Redemptions of redeemable noncontrolling interests	0	(10,739,000)	(6,705,000)
Repayment of line of credit	0	0	(4,339,000)
Purchase of noncontrolling interest	(10,724,000)	0	0
Redemptions of Class A-1 redeemable preferred stock	(3,044,000)	0	0
Cash repayment of Preferred B dividends	(27,584,000)	0	0
Costs associated with the credit facility	(3,311,000)	0	0
Proceeds from convertible notes	460,000,000	10,097,000	0
Payments for debt issuance costs related to convertible notes	(13,184,000)	0	0
Payment of forward stock purchase transaction	(131,147,000)	0	0
Share repurchases	(27,702,000)	0	0
Purchase of Capped Call Option	(66,746,000)	0	0
Other	1,176,000	(1,772,000)	(1,978,000)
Net cash provided by financing activities	757,823,000	78,957,000	1,931,000
Effect of foreign exchange on cash and cash equivalents	126,000	(31,000)	9,000
Net increase (decrease) in cash and cash equivalents	435,399,000	25,651,000	(1,843,000)
Cash and cash equivalent at the beginning of the period	55,930,000	30,279,000	32,122,000
Cash and cash equivalents at the end of the period	$ 491,329,000	$ 55,930,000	$ 30,279,000