Lease Obligations - Schedule of Office Space Lease Agreements in Place for Real Properties (Detail) - ft²	1 Months Ended	12 Months Ended
	Jan. 31, 2022	Dec. 31, 2022	Nov. 30, 2021
Dublin Office [Member]
Lessee Lease Description [Line Items]
Approximate Square Feet		80,000
Dublin Office [Member] | Minimum [Member]
Lessee Lease Description [Line Items]
Lease Expiry Date		Jul. 01, 2032
Dublin Office [Member] | Maximum [Member]
Lessee Lease Description [Line Items]
Lease Expiry Date		May 04, 2041
Lake Forest Office [Member]
Lessee Lease Description [Line Items]
Approximate Square Feet		160,000
Lease Expiry Date	Mar. 31, 2031	Mar. 31, 2031
South San Francisco Office [Member]
Lessee Lease Description [Line Items]
Approximate Square Feet		40,000
Lease Expiry Date		Dec. 31, 2031
Rockville Maryland Office [Member]
Lessee Lease Description [Line Items]
Approximate Square Feet		42,000	192,000
Rockville Maryland Office [Member] | Minimum [Member]
Lessee Lease Description [Line Items]
Lease Expiry Date		Aug. 31, 2024
Rockville Maryland Office [Member] | Maximum [Member]
Lessee Lease Description [Line Items]
Lease Expiry Date		May 31, 2026
Chicago Office [Member]
Lessee Lease Description [Line Items]
Approximate Square Feet		9,200
Lease Expiry Date		Dec. 31, 2028
Washington, D.C. Office [Member]
Lessee Lease Description [Line Items]
Approximate Square Feet		6,000
Lease Expiry Date		Sep. 30, 2024
Mannheim Office [Member]
Lessee Lease Description [Line Items]
Approximate Square Feet		4,800
Lease Expiry Date		Dec. 31, 2023