Business Combination (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended
May 18, 2020	Mar. 31, 2021
Business Acquisition [Line Items]
Purchase accounting adjustments, increase in goodwill		$ 90
Revenue		3,802
Net income		$ 249
Emerald Medical Services Pte., Ltd [Member] \| Emerald Extrusion Services LLC [Member]
Business Acquisition [Line Items]
Equity method, ownership interest	54.00%
Emerald Medical Services Pte., Ltd [Member]
Business Acquisition [Line Items]
Acquisition date		May 18, 2020
Purchase price	$ 11,815

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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