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Fair Value
3 Months Ended
Mar. 31, 2024
Fair Value [Abstract]  
Fair Value [Text Block]
(2)
Fair Value

The Company applies a fair value hierarchy that requires the use of observable market data, when available, and prioritizes the inputs to valuation techniques used to measure fair value in the following categories:

Level 1 – Valuation is based upon quoted prices for identical instruments traded in active markets.

Level 2 – Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model‑based valuation techniques for which all significant assumptions are observable in the market.

Level 3 – Valuation is generated from model‑based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect the Company’s own estimates of assumptions market participants would use in pricing the asset or liability.

Certain of the Company’s financial instruments, including cash and cash equivalents, notes payable and other liabilities approximate their fair value because of the short‑term maturity of these financial instruments and are based on Level 1 inputs. The Company’s equity-classified warrants and stock options are measured at fair value upon grant using the Black-Scholes option pricing model, a Level 2 input. The Company uses unobservable inputs for the model’s assumptions, including management’s assumptions of the Company’s volatility and price of the underlying stock. The fair value of the Company’s convertible notes is disclosed at each reporting period based on a discounted cash flow analysis, a Level 3 input.