Segment Information (Details Narrative)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Segment Information Details Narrative
Direct import sales to total net sales ratio	11.00%	17.00%

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