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Income Taxes (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Taxes
Income tax expense	$ 59,000	$ 50,000	$ 541,000	$ 121,000
Effective tax rate	7.20%	3.70%
Unrecognized tax benefits	$ 3,100,000		3,083,000	$ 3,203,000	$ 3,106,000
Unrecognized tax benefits effective tax rate	1,700,000		$ 1,700,000
Interest expense or penalties related to unrecognized tax benefits	$ 0

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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