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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Equity Incentive Plans - Restricted Stock (Details) - Unvested restricted stock units - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Shares
Restricted stock outstanding at beginning of year (in shares)	125	167
Granted (in shares)	155,004	94
Vested (in shares)	(112)	(135)
Forfeited (in shares)	(1,500)
Restricted stock outstanding at end of year (in shares)	153,517	125	167
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$ 2.46	$ 52.50
Vested (in dollars per share)	674.63	$ 3,815.00
Forfeited (in dollars per share)	$ 2.48
Aggregate Intrinsic Value
Intrinsic value of vested shares	$ 299	$ 163	$ 163
Executive officers
Shares
Granted (in shares)			35
Vesting period			1 year
Directors
Shares
Granted (in shares)		94	113
Directors \| Minimum
Shares
Vesting period		1 year	1 year
Directors \| Maximum
Shares
Vesting period			3 years
Employees and directors
Shares
Granted (in shares)	155,004
Employees and directors \| Minimum
Shares
Vesting period	1 year
Employees and directors \| Maximum
Shares
Vesting period	4 years