Collaboration and License Agreement - Schedule of Allocated Transaction Price and Revenue Activity (Detail) - ModernaTX, Inc - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2024	Mar. 31, 2023
Collaboration and License Agreement
Collaboration and License Agreement
Standalone Selling Price			$ 96,050
Transaction Price Allocated	$ 73,931	$ 73,931	77,893
Revenue Recognized	7,554	15,704
Deferred Revenue	42,707	42,707
ctLNP technology and research license
Collaboration and License Agreement
Standalone Selling Price			52,500
Transaction Price Allocated	40,409	40,409	42,576
Revenue Recognized	7,554	15,704
Deferred Revenue	14,549	14,549
First liver program commercialization option license
Collaboration and License Agreement
Standalone Selling Price			7,000
Transaction Price Allocated	5,388	5,388	5,677
Revenue Recognized	0	0
Deferred Revenue	4,526	4,526
Second liver program commercialization option license
Collaboration and License Agreement
Standalone Selling Price			7,000
Transaction Price Allocated	5,388	5,388	5,677
Revenue Recognized	0	0
Deferred Revenue	4,526	4,526
First non-liver program commercialization option license
Collaboration and License Agreement
Standalone Selling Price			11,700
Transaction Price Allocated	9,006	9,006	9,488
Revenue Recognized	0	0
Deferred Revenue	7,565	7,565
Second non-liver program commercialization option license
Collaboration and License Agreement
Standalone Selling Price			11,700
Transaction Price Allocated	9,006	9,006	9,488
Revenue Recognized	0	0
Deferred Revenue	7,565	7,565
Third liver or non-liver program commercialization option license
Collaboration and License Agreement
Standalone Selling Price			6,150
Transaction Price Allocated	4,734	4,734	$ 4,987
Revenue Recognized	0	0
Deferred Revenue	$ 3,976	$ 3,976

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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