Stockholders' Equity - Stock Option Activity (Details) - USD ($)	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Stock option activity
Stock options outstanding at beginning of period	63,560
Granted	0	0
Expired	(1,053)
Forfeited	(191)
Stock options outstanding at end of period	62,316
Stock options expected to vest at end of period	62,316
Stock options exercisable at end of period	56,667
Weighted average exercise price
Stock options outstanding at beginning of period (in dollars per share)	$ 355.25
Expired (in dollars per share)	1,541.96
Forfeited (in dollars per share)	479.77
Stock options outstanding at end of period (in dollars per share)	334.82
Stock options expected to vest at end of period (in dollars per share)	334.82
Stock options exercisable at end of period (in dollars per share)	$ 342.10
Aggregate Intrinsic Value
Stock options outstanding at beginning of period	$ 14,946
Stock options outstanding at end of period	14,946
Stock options expected to vest at end of period	14,946
Stock options exercisable at end of period	$ 14,946
Weighted Average Remaining Contractual Life
Stock options outstanding at end of period	7 years 1 month 6 days
Stock options exercisable at end of period	7 years
Unrecognized compensation expense	$ 1,100,000
Weighted-average recognition period	8 months 12 days