Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Collaborative Arrangements and Licensing Agreements, Biogen (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Collaborative Arrangement and Licensing Agreement [Abstract]
Revenue	$ 119,497	$ 130,524
Biogen [Member]
Collaborative Arrangement and Licensing Agreement [Abstract]
Revenue	59,236	$ 70,501
Deferred contract revenue	$ 287,200		$ 307,400
Biogen [Member] \| Revenue [Member] \| Strategic Partner [Member]
Collaborative Arrangement and Licensing Agreement [Abstract]
Concentration percentage	50.00%	54.00%
Biogen [Member] \| Minimum [Member]
Collaborative Arrangement and Licensing Agreement [Abstract]
Cumulative payments received	$ 3,800,000