Summary of Significant Accounting Policies - Summary of Fair Value, Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets included in:
Available-for-sale securities	$ 83,822	$ 114,565
Total fair value	105,715	133,635
Liabilities included in:
Total fair value	2,000	9,300
Contingent consideration
Liabilities included in:
Total fair value	2,000	9,300
Money market securities
Assets included in:
Money market securities	21,893	19,070
Corporate debt securities
Assets included in:
Available-for-sale securities	18,860	31,353
U.S. treasury securities
Assets included in:
Available-for-sale securities	5,064	20,531
Commercial paper
Assets included in:
Available-for-sale securities	36,759	53,955
Yankee debt securities
Assets included in:
Available-for-sale securities	3,932
Supranational
Assets included in:
Available-for-sale securities	3,051
Asset-backed securities
Assets included in:
Available-for-sale securities	16,156	8,726
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets included in:
Total fair value	21,893	19,070
Liabilities included in:
Total fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Contingent consideration
Liabilities included in:
Total fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market securities
Assets included in:
Money market securities	21,893	19,070
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities
Assets included in:
Available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. treasury securities
Assets included in:
Available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial paper
Assets included in:
Available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Yankee debt securities
Assets included in:
Available-for-sale securities	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Supranational
Assets included in:
Available-for-sale securities	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed securities
Assets included in:
Available-for-sale securities	0	0
Significant Other Observable Inputs (Level 2)
Assets included in:
Total fair value	83,822	114,565
Liabilities included in:
Total fair value	0	0
Significant Other Observable Inputs (Level 2) | Contingent consideration
Liabilities included in:
Total fair value	0	0
Significant Other Observable Inputs (Level 2) | Money market securities
Assets included in:
Money market securities	0	0
Significant Other Observable Inputs (Level 2) | Corporate debt securities
Assets included in:
Available-for-sale securities	18,860	31,353
Significant Other Observable Inputs (Level 2) | U.S. treasury securities
Assets included in:
Available-for-sale securities	5,064	20,531
Significant Other Observable Inputs (Level 2) | Commercial paper
Assets included in:
Available-for-sale securities	36,759	53,955
Significant Other Observable Inputs (Level 2) | Yankee debt securities
Assets included in:
Available-for-sale securities	3,932
Significant Other Observable Inputs (Level 2) | Supranational
Assets included in:
Available-for-sale securities	3,051
Significant Other Observable Inputs (Level 2) | Asset-backed securities
Assets included in:
Available-for-sale securities	16,156	8,726
Significant Unobservable Inputs (Level 3)
Assets included in:
Total fair value	0	0
Liabilities included in:
Total fair value	2,000	9,300
Significant Unobservable Inputs (Level 3) | Contingent consideration
Liabilities included in:
Total fair value	2,000	9,300
Significant Unobservable Inputs (Level 3) | Money market securities
Assets included in:
Money market securities	0	0
Significant Unobservable Inputs (Level 3) | Corporate debt securities
Assets included in:
Available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | U.S. treasury securities
Assets included in:
Available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | Commercial paper
Assets included in:
Available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | Yankee debt securities
Assets included in:
Available-for-sale securities	0
Significant Unobservable Inputs (Level 3) | Supranational
Assets included in:
Available-for-sale securities	0
Significant Unobservable Inputs (Level 3) | Asset-backed securities
Assets included in:
Available-for-sale securities	$ 0	$ 0