Stockholders' Equity (Deficit) - Summary of Stock Option Activity (Detail) - 2014 EIP and Inducement Plan - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2025	Dec. 31, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Shares, beginning balance	234,143
Granted, Shares	0
Exercised, Shares	0
Forfeited or expired, Shares	(46,594)
Outstanding, Shares, ending balance	187,549	234,143
Outstanding, Weighted Average Exercise Price, beginning balance	$ 217.91
Granted, Weighted Average Exercise Price	0
Exercised, Weighted Average Exercise Price	0
Forfeited or expired, Weighted Average Exercise price	259.3
Outstanding, Weighted Average Exercise Price, ending balance	$ 207.63	$ 217.91
Outstanding, Weighted Average Remaining Contractual Term	5 years	7 years
Aggregate intrinsic value	$ 0	$ 27

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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