Income Taxes - Statutory Federal Income Tax Rate (Details) - CTRS - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Amount
Federal income tax benefit (expenses)	$ 85	$ 346	$ 125
State income tax benefit (expense), net of federal income tax effect	16	66	24
Deferred tax adjustment	0	0	21
Capital loss (gain)	(29)	(10)	404
Valuation allowance	(60)	(346)	(586)
Other	(12)	(56)	12
Benefit applicable to net income (loss)	$ 0	$ 0	$ 0
Rate
Federal income tax benefit (expenses)	21.00%	21.00%	21.00%
State income tax benefit (expense), net of federal income tax effect	4.00%	4.00%	4.00%
Deferred tax adjustment	0.00%	0.00%	4.00%
Capital loss (gain)	0.00%	0.00%	68.00%
Valuation allowance	(15.00%)	(26.00%)	(98.00%)
Other	(10.00%)	1.00%	1.00%
Benefit applicable to net income (loss)	0.00%	0.00%	0.00%

Effective Income Tax Rate Reconciliation Deferred Tax Adjustments

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