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Taxes - Additional Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($) subsidiary
Ireland [Member]
Operating Loss Carryforwards [Line Items]
Number of subsidiaries | subsidiary	2
Delcath Holdings Limited [Member]
Operating Loss Carryforwards [Line Items]
Deferred tax benefit | $	$ 20,000

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- Definition

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