Segment Information (Details Narrative)	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Segment Information Details Narrative
Direct import sales to total net sales ratio	7.00%	7.00%

Percentage of direct import sales to total net sales.

No definition available.

Name:	ACU_DirectImportSalesToTotalNetSalesPercentage
Namespace Prefix:	ACU_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration