Consolidated Condensed Statements Of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Net (loss) income	$ (1,979)	$ 775
Foreign currency translation adjustment, net of taxes of $0	13	7
Pension and postretirement obligations, net of taxes of $0	5	5
Investment in partnerships, net of taxes of $0		118
Comprehensive (loss) income	$ (1,961)	$ 905

Other Comprehensive Income Loss Investment in Partnership, Net of Tax

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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- Definition

Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.

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