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Summary of Business and Significant Accounting Policies (Details) $ in Thousands		3 Months Ended		12 Months Ended
	Mar. 25, 2025 USD ($)	Mar. 31, 2025 USD ($) Segment	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Significant Accounting Policies [Line Items]
Cash, cash equalents, restricted cash, and short-term investments		$ 46,900		$ 35,300
Working capital deficit		32,500
Accumulated deficit		(811,149)		(806,899)
Net losses excluding effect of gain on sale of businesses		20,000	$ 21,000
Net (loss) income		$ (4,250)	$ 50,599
Number of operating segments | Segment		1
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]		srt:ChiefExecutiveOfficerMember
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description		The chief operating decision maker assesses performance for the single operating segment and decides how to allocate resources based on net income that also is reported on the income statement as consolidated net (loss) income.
Percentage of cash and cash equivalents held		81.00%
Allowance for credit losses		$ 1,471		$ 1,343
Accounts Receivable | Customer Concentration Risk | Customer One
Significant Accounting Policies [Line Items]
Concentration risk, percentage		10.00%		10.00%
Revenue | Customer Concentration Risk | U.S. Federal Government
Significant Accounting Policies [Line Items]
Concentration risk, percentage		18.00%	17.00%
Assets | Geographic Concentration Risk | Single Customer | United States
Significant Accounting Policies [Line Items]
Concentration risk, percentage		97.00%		85.00%
Accounts Payable | Supplier Concentration Risk | Two Vendors
Significant Accounting Policies [Line Items]
Concentration risk, percentage				10.00%
Accounts Payable | Supplier Concentration Risk | One Vendor
Significant Accounting Policies [Line Items]
Concentration risk, percentage		10.00%
Purchases | Supplier Concentration Risk | One Vendor
Significant Accounting Policies [Line Items]
Concentration risk, percentage		10.00%	10.00%
Legacy Notes
Significant Accounting Policies [Line Items]
Carrying value of convertible notes	$ 10,961
Extended maturity date	Apr. 15, 2026

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