XML 144 R34.htm IDEA: XBRL DOCUMENT v3.25.1
Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Summary of Accounts Receivable, Allowance for Credit Losses
The following table shows the activity in the allowance for credit losses for the years ended December 31, 2024, 2023, and 2022:
 202420232022
Beginning balance$184 $184 $1,693 
Charged to operating expenses— — — 
Write offs of accounts receivable, net of recoveries(184)— (1,509)
Ending balance$— $184 $184 
Summary of Estimated Useful Lives of Property, Plant and Equipment The estimated useful lives of these assets from continuing operations are as follows:
 Years
Land improvements
9–15
Buildings and building improvements
9–15
Furniture and fixtures
2–7
Equipment
3–7
Breeding stock2
Computer hardware and software
1–5
Leasehold improvements are amortized over the shorter of the useful life of the asset or the applicable lease term, generally one to eleven years.
Summary of Assumptions Used in Option Pricing Model The assumptions used in the Black-Scholes option pricing model for the years ended December 31, 2024, 2023, and 2022 are set forth in the table below:
202420232022
Valuation assumptions
Expected dividend yield0%0%0%
Expected volatility
85%–95%
85%–95%
87%–89%
Expected term (years)
6.00-10.00
6.00-10.00
6.25
Risk-free interest rate
3.55%–4.56%
3.52%–4.80%
1.64%–4.12%
Summary of Potentially Dilutive Securities Excluded from Calculation of Net Loss per Share The following potentially dilutive securities as of December 31, 2024, 2023, and 2022, have been excluded from the computations of diluted weighted average shares outstanding for the years then ended as they would have been anti-dilutive: 
 December 31,
202420232022
Options25,924,734 22,057,340 15,201,276 
Restricted stock units
826,057 961,534 697,815 
Performance stock units
3,178,000 — — 
Total29,928,791 23,018,874 15,899,091