Warrants and Options - Summary of Warrants Issued to Purchase Common Stock (Detail) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Class Of Warrant Or Right [Line Items]
Exercised during the period	0	(75,000)
Outstanding	195,885	259,817
March 2023 Pre-Funded Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2023-03
Exercise Price Per Share	$ 0
Exercised during the period	0	(75,000)
Outstanding	0	0
December 2022 Service and Performance Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2022-12
Term	5 years
Exercise Price Per Share	$ 11.2
Exercised during the period	0	0
Outstanding	1,000	1,000
October 2022 Service and Performance Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2022-10
Term	5 years
Exercise Price Per Share	$ 16
Exercised during the period	0	0
Outstanding	1,000	1,000
January 2021 Placement Agent Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2021-01
Term	5 years 6 months
Exercise Price Per Share	$ 159.60
Exercised during the period	0	0
Outstanding	9,846	9,846
December 2020 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2020-12
Term	5 years 6 months
Exercise Price Per Share	$ 9
Exercised during the period	0	0
Outstanding	16,367	16,367
December 2020 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2020-12
Term	5 years 6 months
Exercise Price Per Share	$ 120.00
Exercised during the period	0	0
Outstanding	49,100	49,100
December 2020 Placement Agent Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2020-12
Term	5 years
Exercise Price Per Share	$ 152.80
Exercised during the period	0	0
Outstanding	3,274	3,274
July 2020 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2020-07
Term	5 years 6 months
Exercise Price Per Share	$ 9.00
Exercised during the period	0	0
Outstanding	16,036	16,036
July 2020 Placement Agent Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2020-07
Term	5 years 6 months
Exercise Price Per Share	$ 198.80
Exercised during the period	0	0
Outstanding	802	802
May 2020 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2020-05
Term	5 years
Exercise Price Per Share	$ 9
Exercised during the period	0	0
Outstanding	0	9,946
May 2020 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2020-05
Term	5 years
Exercise Price Per Share	$ 191.2
Exercised during the period	0	0
Outstanding	0	24,863
May 2020 Placement Agent Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2020-05
Term	5 years
Exercise Price Per Share	$ 245.20
Exercised during the period	0	0
Outstanding	0	1,741
January 2021 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2021-01
Term	5 years 6 months
Exercise Price Per Share	$ 125.2
Exercised during the period	0	0
Outstanding	90,629	90,629
January 2021 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2021-01
Term	5 years 6 months
Exercise Price Per Share	$ 9
Exercised during the period	0	0
Outstanding	7,831	7,831
September 2019 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2019-09
Term	5 years 6 months
Exercise Price Per Share	$ 9
Exercised during the period	0	0
Outstanding	0	9,892
September 2019 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2019-09
Term	5 years 6 months
Exercise Price Per Share	$ 300.8
Exercised during the period	0	0
Outstanding	0	6,594
June 2019 Warrants [Member]
Class Of Warrant Or Right [Line Items]
Issuance Date	2019-06
Term	5 years 6 months
Exercise Price Per Share	$ 200
Exercised during the period	0	0
Outstanding	0	10,896