Income Taxes - Components of Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Allowance for doubtful accounts	$ 222	$ 211
Net operating loss carry forwards	3,637	5,261
Tax credit carry forwards	514	1,202
Charitable contributions carry forward	0	2
Intangibles	785	0
Gross deferred tax assets	5,158	6,676
Less: valuation allowance	(3,402)	(5,333)
Net deferred tax assets	1,756	1,343
Deferred tax liabilities:
Intangibles	0	(4,926)
Accrued liabilities not deducted for tax purposes	(2,214)	(2,133)
Investment in partnerships	(3,940)	(2,611)
Property, plant and equipment	(2,900)	(2,956)
Undistributed earnings of foreign subsidiaries	(708)	(764)
Gross deferred tax liabilities	(9,762)	(13,390)
Net deferred tax liabilities	$ (8,006)	$ (12,047)