Deferred Tax Credits - Schedule of Deferred Tax Credits (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred Tax Credits
Deferred research & development tax credits	$ 692	$ 847
Deferred other tax credits	2	1
Total deferred tax credits	$ 694	$ 848

Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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