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Share-based compensation arrangement by share-based payment award, additional number of shares available for grant.

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Aggregate number of common shares reserved for future issuance.

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Cash received on stock transaction after deduction of issuance costs.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Number of additional shares authorized for issuance under share-based payment arrangement.

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Number of options outstanding, including both vested and non-vested options.

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Period from grant to expiration date of share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2016	Jan. 01, 2026	Jan. 01, 2025
2015 and 2016 and 2018 Equity Inducement Plan \| Service Based Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based award, vesting period (in years)			4 years
Expiration term (in years)			10 years
2016 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Annual percentage of additional shares					5.00%
Additional number of shares available for issuance (in shares)						4,711,544	3,814,905
Common stock available for future issuance (in shares)	15,084,463		15,084,463
Outstanding option awards (in shares)	6,876,693		6,876,693
2018 Equity Inducement Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock available for future issuance (in shares)	6,481,956		6,481,956
Outstanding option awards (in shares)	5,981,072		5,981,072
Common stock available for future issuance, additional amount authorized (in shares)		750,000
2016 Employee Stock Purchase Plan \| Employee Stock \| 2016 ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares sold (in shares)	19,967	0	19,967	16,877
Sale of stock, proceeds received	$ 0.5		$ 0.5	$ 0.3