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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Inventories, LIFO debit	$ 4,837	$ 5,337

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- Definition

A debit applied to the carrying amount of inventory on the current periods balance sheet to adjust for LIFO.

+ References

No definition available.

+ Details

Name:	zeus_LIFODebit
Namespace Prefix:	zeus_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant