Accounting Policies - Concentration of Credit and Customer Risk (Details) - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Sales Revenue, Net | Federal Government Agencies
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	25.30%	23.90%	21.30%
Sales Revenue, Net | Top Three U.S. Federal Government Agencies
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	3.90%	4.00%	4.20%
Sales Revenue, Net | Foreign Customers
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	37.60%	36.60%	35.80%
Accounts Receivable | Customer One
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	13.40%	17.50%