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Purchase price of common stock expressed as a percentage of its fair value.

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Share-Based Compensation - Additional Information (Detail)		3 Months Ended
	Jun. 28, 2017 shares	Mar. 31, 2026 USD ($) Installments $ / shares shares	Mar. 31, 2025 USD ($) Plan $ / shares	Dec. 31, 2025 shares	Mar. 11, 2019 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares/units issued		57,891,493		56,414,657
Share based compensation options granted		1,118,350
Aggregate intrinsic value of stock options exercised \| $		$ 0	$ 0
Number of shares authorized for issuance		21,345,127
Common stock reserved for issuance		7,230,454
2019 Inducement Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares/units issued		1,281,112
Share based compensation options granted		0
Number of shares authorized for issuance					331,500
Number of shares to be incremented					3,156,500
Common stock reserved for issuance					331,500
2017 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of equity compensation plans \| Plan			2
Common stock, shares/units issued		5,949,342
Share based compensation options granted		1,118,350
Number of shares authorized for issuance	1,785,416
Number of shares to be incremented	18,188,627
2017 Plan [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price per share of stock options as a percentage of fair market value of share of common stock	100.00%
2017 Plan [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period	10 years
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unrecognized compensation cost related to unvested share-based awards \| $		$ 2,000,000
Weighted average period		3 years 9 months
Weighted average grant-date fair value of awards granted \| $ / shares		$ 1.84	$ 0
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average period		2 years 6 months 14 days
Share based compensation options granted		852,525
Unrecognized compensation expense \| $		$ 5,300
Weighted average grant-date fair value of awards granted \| $ / shares		$ 2.23
Right to receive, number of share		1
Equal monthly installments \| Installments		4