Common Stock - Additional Information (Detail) $ / shares in Units, $ in Thousands |
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1 Months Ended |
3 Months Ended |
6 Months Ended |
12 Months Ended |
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May 04, 2026
USD ($)
$ / shares
shares
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Apr. 30, 2026
$ / shares
shares
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Oct. 23, 2025
USD ($)
$ / shares
shares
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Sep. 24, 2025
USD ($)
shares
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Sep. 08, 2025
USD ($)
shares
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Jul. 29, 2025
USD ($)
Days
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Apr. 21, 2025
USD ($)
$ / shares
shares
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May 31, 2026
USD ($)
shares
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Jul. 31, 2025
USD ($)
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Apr. 30, 2025
USD ($)
$ / shares
shares
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May 31, 2024
USD ($)
shares
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Jun. 30, 2026
USD ($)
$ / shares
shares
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Sep. 30, 2025
USD ($)
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Jun. 30, 2026
USD ($)
$ / shares
shares
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Jun. 30, 2025
USD ($)
shares
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Dec. 31, 2025
USD ($)
$ / shares
shares
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Jul. 20, 2026
shares
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Jul. 19, 2026
shares
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Mar. 31, 2026
shares
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Sep. 09, 2025
shares
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May 15, 2025
USD ($)
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Mar. 31, 2025
shares
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Dec. 31, 2024
shares
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| Class of Stock [Line Items] |
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| Common stock, shares authorized |
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100,000,000
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100,000,000
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100,000,000
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| Common stock, par value | $ / shares |
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$ 0.001
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$ 0.001
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$ 0.001
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| Net proceeds from offering | $ |
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$ 53,544
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$ 367
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| Warrants exercise price | $ / shares |
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$ 1.60
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| Common stock, shares issued |
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85,767,032
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85,767,032
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27,550,222
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| Common stock, shares outstanding |
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85,767,032
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85,767,032
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27,550,222
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| Common stock voting rights |
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Each share of common stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders.
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| Common stock, dividends declared | $ / shares |
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$ 0
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| Aggregate offering price | $ |
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$ 172
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$ 172
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$ 113
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| Aggregate number of common stock shares issued and sold |
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255,000
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| Net proceeds from warrant exercises | $ |
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$ 0
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$ 1,595
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| Subsequent Event [Member] |
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| Class of Stock [Line Items] |
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| Common stock, shares authorized |
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200,000,000
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100,000,000
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| 2023 Warrants [Member] |
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| Class of Stock [Line Items] |
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| Warrants exercise price | $ / shares |
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$ 4.89
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| Warrants to purchase shares of common stock |
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159,500
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1,300,500
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| Cash consideration | $ |
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$ 2,079
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| 2024 Warrants [Member] |
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| Class of Stock [Line Items] |
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| Warrants exercise price | $ / shares |
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$ 4.68
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| Warrants to purchase shares of common stock |
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884,798
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| Issuance of warrants | $ |
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8,000
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| 2026 Warrants [Member] |
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| Class of Stock [Line Items] |
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| Percentage Of Common Stock Share Outstanding |
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9.99%
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| 2026 Warrant liabilities [Member] |
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| Class of Stock [Line Items] |
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| Change in fair value | $ |
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$ 8
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$ 8
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| Exchange Pre-Funded Warrants [Member] |
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| Class of Stock [Line Items] |
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| Offering price | $ / shares |
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$ 1.599
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| Warrants exercise price | $ / shares |
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$ 0.001
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$ 0.001
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$ 0.001
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| Aggregate number of common stock shares issued and sold |
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1,939,000
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| Warrants to purchase shares of common stock |
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1,939,000
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| Net proceeds from warrant exchanges | $ |
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$ 2,984
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| Initial fair value of warrants issued | $ |
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$ 4,757
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| Net effect modification of warrants issued | $ |
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490
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| Fair value of warrants issued | $ |
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$ 5,652
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| Bios Pre-Funded Warrants [Member] |
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| Class of Stock [Line Items] |
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| Warrants exercise price | $ / shares |
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$ 1.599
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0.001
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$ 0.001
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| Aggregate number of common stock shares issued and sold |
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312,695
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| Warrants to purchase shares of common stock |
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312,695
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| Net proceeds from warrant exercises | $ |
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$ 481
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| Konik Warrants [Member] |
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| Class of Stock [Line Items] |
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| Warrants exercise price | $ / shares |
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1.5
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$ 1.5
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| Aggregate number of common stock shares issued and sold |
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1,725,000
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| Bios Warrants [Member] |
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| Class of Stock [Line Items] |
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| Warrants exercise price | $ / shares |
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1
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$ 1
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| Aggregate number of common stock shares issued and sold |
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3,000,000
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| Pre-Funded Warrants [Member] |
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| Class of Stock [Line Items] |
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| Warrants exercise price | $ / shares |
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$ 0.001
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$ 0.001
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| Aggregate number of common stock shares issued and sold |
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2,251,695
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| PIPE Warrants and Offering Warrants [Member] |
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| Class of Stock [Line Items] |
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| Net proceeds from warrant exercises | $ |
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$ 4,601
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| PIPE Warrants [Member] |
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| Class of Stock [Line Items] |
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| Fair value of warrants replaced | $ |
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1,385
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| Series X Preferred Stock [Member] |
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| Class of Stock [Line Items] |
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| Warrants exercise price | $ / shares |
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$ 4.89
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$ 4.89
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| Common stock reserved for issuance |
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12,469,000
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12,469,000
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| Conversion of stock shares issued |
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12,232
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12,232
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| Warrants and rights outstanding, maturity date |
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May 02, 2027
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May 02, 2027
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| Series X [Member] |
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| Class of Stock [Line Items] |
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| Common stock, shares issued |
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85,767,032
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85,767,032
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| Common stock, shares outstanding |
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85,767,032
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85,767,032
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| Maximum [Member] | Series X [Member] |
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| Class of Stock [Line Items] |
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| Conversion of stock shares issued |
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27,369,336
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| Common Stock [Member] |
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| Class of Stock [Line Items] |
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| Common stock, shares outstanding |
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85,767,032
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85,767,032
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23,046,121
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27,550,222
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28,039,032
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22,005,317
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21,666,012
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| Common Stock [Member] | YA II PN Ltd [Member] |
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| Class of Stock [Line Items] |
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| Common stock, shares issued |
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1,880,872
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| Warrant Exercises [Member] |
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| Class of Stock [Line Items] |
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| Common stock reserved for issuance |
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11,346,839
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11,346,839
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| Net proceeds from warrant exercises | $ |
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$ 1,595
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|
|
| 2017 Employee Stock Purchase Plan [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Common stock reserved for issuance |
|
|
|
|
|
|
|
|
|
|
|
7,500
|
|
7,500
|
|
|
|
|
|
|
|
|
|
| 2021 Stock Incentive Plan [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Common stock reserved for issuance |
|
|
|
|
|
|
|
|
|
|
|
1,932,194
|
|
1,932,194
|
|
|
|
|
|
|
|
|
|
| Stock remained available for future issuance |
|
|
|
|
|
|
|
|
|
|
|
3,840,254
|
|
3,840,254
|
|
|
|
|
|
|
|
|
|
| Existing Equity Incentive Plans [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Common stock reserved for issuance |
|
|
|
|
|
|
|
|
|
|
|
3,545,997
|
|
3,545,997
|
|
|
|
|
|
|
|
|
|
| Lung Acquisition [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants exercise price | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
$ 5.66
|
|
$ 5.66
|
|
|
|
|
|
|
|
|
|
| Aggregate number of common stock shares issued and sold |
|
|
|
|
|
|
|
|
|
|
|
|
|
726,437
|
|
|
|
|
|
|
|
|
|
| Warrants and rights outstanding, maturity date |
|
|
|
|
|
|
|
|
|
|
|
May 20, 2029
|
|
May 20, 2029
|
|
|
|
|
|
|
|
|
|
| Underwritten Public Offering [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Shares issued, price per share | $ / shares |
$ 1
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Gross proceeds from offering | $ |
$ 57,500
|
|
|
|
|
|
|
$ 57,500
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net proceeds from offering | $ |
53,099
|
|
|
|
|
|
|
53,099
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Underwriting discounts, commissions, and offering expenses | $ |
$ 4,401
|
|
|
|
|
|
|
$ 4,401
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Underwritten Public Offering [Member] | Common Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Shares issued, price per share | $ / shares |
$ 1
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Aggregate number of common stock shares issued and sold |
50,000,000
|
|
|
|
|
|
|
57,500,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Over-Allotment Option [Member] | Common Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Aggregate number of common stock shares issued and sold |
7,500,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Underwriting Agreement [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants exercise price | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
$ 4.68
|
|
$ 4.68
|
|
|
|
|
|
|
|
|
|
| Aggregate number of common stock shares issued and sold |
|
|
|
|
|
|
|
|
|
|
|
|
|
3,388,707
|
|
|
|
|
|
|
|
|
|
| Warrants and rights outstanding, maturity date |
|
|
|
|
|
|
|
|
|
|
|
May 03, 2027
|
|
May 03, 2027
|
|
|
|
|
|
|
|
|
|
| Underwriting Agreement [Member] | 2024 Warrants [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net proceeds from offering | $ |
|
|
|
|
|
|
|
|
|
|
$ 17,675
|
|
|
|
|
|
|
|
|
|
|
|
|
| Underwriting Agreement [Member] | Konik Warrants [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Percentage of Common Stock Sold in Offering for Underwriter Warrants |
|
3.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Underwriting Agreement [Member] | Common Stock [Member] | Offering Warrant Shares [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase shares of common stock |
|
|
|
|
|
|
|
|
|
884,798
|
|
|
|
3,388,707
|
|
3,388,707
|
|
|
|
|
|
|
|
| Underwriting Agreement [Member] | Common Stock [Member] | 2024 Warrants [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Aggregate number of common stock shares issued and sold |
|
|
|
|
|
|
|
|
|
|
4,273,505
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase shares of common stock |
|
|
|
|
|
|
|
|
|
|
4,273,505
|
|
|
|
|
|
|
|
|
|
|
|
|
| Wainwright Sales Agreement [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Transaction fee | $ |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 67
|
|
|
|
|
|
|
|
|
|
| Reduced aggregate offering price | $ |
|
|
|
|
|
|
|
|
$ 8,067
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Wainwright Sales Agreement [Member] | At The Market Offering [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net proceeds from offering | $ |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 1,844
|
|
|
|
|
|
|
|
|
|
| Wainwright Sales Agreement [Member] | At The Market Offering [Member] | Common Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Aggregate number of common stock shares issued and sold |
|
|
|
|
|
|
|
|
|
|
|
|
|
1,296,777
|
|
|
|
|
|
|
|
|
|
| Wainwright Sales Agreement [Member] | H.C. Wainwright [Member] | At The Market Offering [Member] | Common Stock [Member] | Maximum [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Aggregate offering price | $ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 13,702
|
|
|
| Pre-Paid Advance Agreement [Member] | YA II PN Ltd [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Common stock, par value | $ / shares |
|
|
$ 0.001
|
|
|
|
|
|
|
|
|
$ 0.001
|
|
$ 0.001
|
|
|
|
|
|
|
|
|
|
| Common stock, shares issued |
|
|
846,290
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Pre-paid advances term |
|
|
|
|
|
12 months
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Pre-paid advance annual rate |
|
|
|
|
|
8.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Default interest rate percentage |
|
|
|
|
|
18.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Initial pre-paid advance | $ |
|
|
$ 1,000
|
|
|
$ 1,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net proceeds received from pre-paid advance | $ |
|
|
950
|
|
|
$ 950
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Original issue discount |
|
|
|
|
|
5.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Legal costs | $ |
|
|
|
|
|
|
|
|
|
|
|
|
$ 118
|
|
|
|
|
|
|
|
|
|
|
| Interest expense | $ |
|
|
|
$ 11
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Principal received from pre-paid advances | $ |
|
|
|
$ 2,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Pre-Paid Advance Agreement [Member] | YA II PN Ltd [Member] | Scenario One [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Equity issuance price as percentage of volume weighted average price |
|
|
|
|
|
115.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Pre-Paid Advance Agreement [Member] | YA II PN Ltd [Member] | Scenario Two [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Equity issuance price as percentage of volume weighted average price |
|
|
|
|
|
95.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Consecutive trading days | Days |
|
|
|
|
|
7
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Pre-Paid Advance Agreement [Member] | Common Stock [Member] | YA II PN Ltd [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Common stock, shares issued |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
953,765
|
|
|
|
| Maximum amount available for pre-paid advances | $ |
|
|
|
|
|
$ 6,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Second Pre-Paid Advance Agreement [Member] | YA II PN Ltd [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Initial pre-paid advance | $ |
|
|
|
|
$ 1,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net proceeds received from pre-paid advance | $ |
|
|
|
|
$ 950
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Original issue discount |
|
|
|
|
5.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Second Pre-Paid Advance Agreement [Member] | Common Stock [Member] | YA II PN Ltd [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Common stock, shares issued |
|
|
|
|
927,107
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Third Pre-Paid Advance Agreement [Member] | YA II PN Ltd [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of Stock [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Initial pre-paid advance | $ |
|
|
1,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net proceeds received from pre-paid advance | $ |
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$ 950
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| Original issue discount |
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|
5.00%
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| First and Second Pre-Paid Advance Agreement [Member] | YA II PN Ltd [Member] |
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| Class of Stock [Line Items] |
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| OID costs | $ |
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|
$ 100
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| Initial Pre-Paid Advance Agreement, Second Pre-Paid Advance Agreement and Third Pre-Paid Advance Agreement [Member] |
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| Class of Stock [Line Items] |
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| Remaining outstanding balance | $ |
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$ 0
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| Fair value of the liabilities | $ |
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$ 0
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|
$ 0
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0
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| Adjustment changes in fair value | $ |
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$ 0
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|
$ 0
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|
$ 0
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| Underwriting agreement with Konik Capital Partners, LLC [Member] | Konik Warrants [Member] |
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| Class of Stock [Line Items] |
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| Warrants exercise price | $ / shares |
|
$ 1.50
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| Warrants to purchase shares of common stock |
|
1,500,000
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| Underwriting agreement with Konik Capital Partners, LLC [Member] | Over-Allotment Option [Member] | Konik Warrants [Member] |
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| Class of Stock [Line Items] |
|
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| Warrants to purchase shares of common stock |
|
225,000
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| Letter agreement with Bios Partners, L.P. [Member] |
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| Class of Stock [Line Items] |
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| Warrants exercise price | $ / shares |
|
$ 1.00
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| Warrants to purchase shares of common stock |
|
3,000,000
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| Letter agreement with Bios Partners, L.P. [Member] | Bios Warrants [Member] |
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| Class of Stock [Line Items] |
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| Warrants exercise price | $ / shares |
|
$ 1.00
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| Letter agreement with Bios Partners, L.P. [Member] | Series X Non-Voting Convertible Preferred Stock [Member] |
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| Class of Stock [Line Items] |
|
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| Conversion of stock shares issued |
|
12,232
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