Stock-based Compensation - Stock-Based Awards Activity (Details) - $ / shares	9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	Dec. 31, 2023
Share Based Compensation Arrangement Roll-Forward
Options, Outstanding, Beginning Balance (in shares)	21,965	27,590	27,590
Options exercised (in shares)	0	0
Options cancelled (in shares)	(2,200)	(3,334)
Options, Outstanding, Ending Balance (in shares)	19,765	24,256	21,965	27,590
Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning Balance (in dollars per share)	$ 331.34	$ 335.75	$ 335.75
Weighted Average Exercise Price, Options exercised (in dollars per share)	0	0
Weighted Average Exercise Price, Options cancelled (in dollars per share)	330.72	367.51
Weighted Average Exercise Price, Ending Balance (in dollars per share)	$ 331.40	$ 335.75	$ 331.34	$ 335.75
Weighted Average Remaining Contractual Life (Years)	4 years 9 months 18 days	5 years 8 months 4 days	5 years 5 months 12 days	6 years 11 months 8 days